PRIMA Plank Cladding Technical Manual

Technical Manual

Designed to attain pure luxury

Aesthetic Cladding | Decorative Fencing | Gable End Cladding | External Wall Cladding | Fascia Board

1. Introduction

1.1 General

1.2 Applications

1.3 Features & Benefits

1.4 Tests and Certification

2. General Fixing Instructions

2.1 Material Selection

2.2 Framing Specification

2.3 Batten Specification

2.4 Fasteners

2.5 Sealing Joints & Gaps

2.6 Jointing Against Other Materials

3. External Wall & Gable End Cladding

3.1 General

3.2 Framing Construction

3.3 Flashing

3.4 Sarking

3.5 Plank Overlaps

3.6 Installation Procedures

3.7 Fixing to Timber

3.8 Fixing to Steel

3.9 Joints

3.10 Ground Clearance

3.11 Corners

3.12 Details at Openings

4. Cladding to Masonry Wall

4.1 General

4.2 Battening Requirement

4.3 Installation Method

4.4 Sarking

4.5 Jointing

4.6 Corners

4.7 Openings

4.8 Wall to Eaves Junction

5. Fascia Board

5.1 General

5.2 Support

5.3 Installation

5.4 Joints

6. Decorative Fencing

6.1 General

6.2 Framing Requirememt

6.3 Installation

7. Finishes Recommendation

8. Working Instructions

8.1 Cutting

8.2 Drilling

8.3 Handling & Stroage

02

02

03

06

08

09

10

10

2.1 Material Selection

thickness should be selected based on the intended applications. For general cladding, fascia board and fencing applications, 7.5mm thick plank is adequate. When higher performance (stronger and more impact resistant) material is desired, use 9.0mm .

For best result, the use of 9.0mm thick is highly recommended for fascia board application where rafters are to be exposed (in absence of eaves lining board).

Trimming plank to a size less than the standard width will reduce its capacity to withstand loads. In instances where reduced-width planks are desirable such as for fencing application, always refer to Hume

Cemboard before specifying or applying them.

Do not apply in areas where it remains in contact with standing water.

2.2 Framing Specification

can be applied to timber or light gauge steel framing members. Construction shall be in accordance with local building practice.

Framing components must have adequate durability for the intended use. These durability criteria shall among others include resistance to weather; corrosion and pest (i.e. termite attack).

Framing timber should be thoroughly dry and selected to minimize shrinkage when planks are installed.

Steel framing must be fabricated from cold-formed galvanized light gauge steel of a minimum 0.55mm to 1.60mm base metal thickness.

As the straightness of finished wall is highly dependent on workmanship of framework, best result can be achieve when frame straightness is between 3mm to 4mm in any 3000mm length.

2.3 Batten Specification

Thick hot rolled structural steel sections and masonry wall must be battened prior to installation of cladding.

Use timber batten with a minimum of 25mm thick x 50mm wide to allow adequate nail penetration.

Steel battens must have a minimum 35mm face width. They are typically 'Z' or top hat sections. Use only galvanised light gauge steel of a minimum 0.55mm to 1.55mm base metal thickness.

2.4 Fasteners

Select the appropriate type of fasteners based on the type of framing.

Fasteners should have acceptable level of durability and be suitably coated for the intended application.

can be fixed by hand nailing or air gun nailing. For screw

fixing, use screw gun with high torque and variable speed of zero to

2,500 revolution per minute fitted with a depth control attachment.

Nail head should finish flush with the face and avoid overdriving.

Drive screw slightly below the plank face and cover fastener head with exterior grade cementitious patching compound. Smoothen with sandpaper if necessary before painting.

2.5 Sealing Joints and Gaps

Gaps at plank joints, corners and openings must be sealed with flexible/ paintable polyurethane sealant. Sealant must be compatible with cementitious panel products. Apply masking tape at both plank edges and start filling the bottom edge and squeezing the sealant in the upward direction. Use spatula to smoothen and remove any excess sealant Remove masking tape immediately upon completion.

Sealant manufacturer's instruction must be adhered to. Sealant must only be painted as recommended by the manufacturer.

2.6 Jointing Against other Material

When butt jointing and other building materials such as masonry wall, a minimum of 6mm gap must be provided. Seal gap with paintable/ flexible sealant, as shown in Figure 1.

2.4 Fasteners

Select the appropriate type of fasteners based on the type of framing.

Fasteners should have acceptable level of durability and be suitably coated for the intended application.

can be fixed by hand nailing or air gun nailing. For screw

fixing, use screw gun with high torque and variable speed of zero to

2,500 revolution per minute fitted with a depth control attachment.

Nail head should finish flush with the face and avoid overdriving.

Drive screw slightly below the plank face and cover fastener head with exterior grade cementitious patching compound. Smoothen with sandpaper if necessary before painting.

2.5 Sealing Joints and Gaps

Gaps at plank joints, corners and openings must be sealed with flexible/ paintable polyurethane sealant. Sealant must be compatible with cementitious panel products. Apply masking tape at both plank edges and start filling the bottom edge and squeezing the sealant in the upward direction. Use spatula to smoothen and remove any excess sealant Remove masking tape immediately upon completion.

Sealant manufacturer's instruction must be adhered to. Sealant must only be painted as recommended by the manufacturer.

2.6 Jointing Against other Material

When butt jointing and other building materials such as masonry wall, a minimum of 6mm gap must be provided. Seal gap with paintable/ flexible sealant, as shown in Figure 1.

1 Introduction

1.1 General

is an autoclaved cellulose fibre reinforced cement siding board manufactured by Hume Cemboard Industries Sdn Bhd, an MS

ISO 9001:2000 accredited company. Manufactured from Portland cement, cellulose fibre, finely ground sand and water, has become extremely popular when a relatively maintenance free timber planking appearance is desired.

1.2 Applications

is designed for external applications where superb weatherability and long-lasting durability form part and parcel of performance criteria. These applications includes:-

• External wall cladding

• Gable end cladding

• Cladding to masonry wall

• Fascia board

• Decorative fencing

is used where there is a requirement for traditional timber look and to add character and depth to flat mundane surfaces.

1.3 Features & Benefits

• Natural timber look (Woodgrain)

• Weather resistant

• Will not rust or rot

• Termite resistant

• Does not warp or twist

• Fire resistant- Class '0'

1.4 Tests and Certification

has been approved by Fire and Rescue Department,

Malaysia as a Class '0' building material under the Malaysian Uniform

Building By-law 1984.

has been tested in accordance with BS 476; Fire tests on building material and structure. The test results are as follows:-

1.4.1 Serviceable Life

When installed and maintained as per good building practice and specifications described in this manual, is expected to have serviceable life of 50 years.

1.4.2 Standard Sizes and Mass

comes in standard thickness of 7.5mm and 9.0mm. It is available in two patterns:

- Woodgrain

has a texture on the front surface

- Smooth

is available with a flat unsanded surface

Approximate masses at Equilibrium Moisture Content of 7%, at temperature of 27°C ± 2°C and relative humidity of 65% to 95% are:-

Thickness x Width x Length

Smooth & Woodgrain

•  7.5mm x 230mm x 3660mm

• 7.5mm x 230mm x 4200mm

•  7.5mm x 300mm x 3660mm

• 7.5mm x 300mm x 4200mm

Smooth

• 9.0mm x 230mm x 3660mm

• 9.0mm x 230mm x 4200mm

Approximate Mass per Piece

9.1kg

10.6kg

11.8kg

13.8kg

10.9kg

12.7kg

2 General Fixing Instructions

2.1 Material Selection

thickness should be selected based on the intended applications. For general cladding, fascia board and fencing applications, 7.5mm thick plank is adequate. When higher performance (stronger and more impact resistant) material is desired, use 9.0mm .

For best result, the use of 9.0mm thick is highly recommended for fascia board application where rafters are to be exposed (in absence of eaves lining board).

Trimming plank to a size less than the standard width will reduce its capacity to withstand loads. In instances where reduced-width planks are desirable such as for fencing application, always refer to Hume

Cemboard before specifying or applying them.

Do not apply in areas where it remains in contact with standing water.

2.2 Framing Specification

can be applied to timber or light gauge steel framing members. Construction shall be in accordance with local building practice.

Framing components must have adequate durability for the intended use. These durability criteria shall among others include resistance to weather; corrosion and pest (i.e. termite attack).

Framing timber should be thoroughly dry and selected to minimize shrinkage when planks are installed.

Steel framing must be fabricated from cold-formed galvanized light gauge steel of a minimum 0.55mm to 1.60mm base metal thickness.

As the straightness of finished wall is highly dependent on workmanship of framework, best result can be achieve when frame straightness is between 3mm to 4mm in any 3000mm length.

2.3 Batten Specification

Thick hot rolled structural steel sections and masonry wall must be battened prior to installation of cladding.

Use timber batten with a minimum of 25mm thick x 50mm wide to allow adequate nail penetration.

Steel battens must have a minimum 35mm face width. They are typically 'Z' or top hat sections. Use only galvanised light gauge steel of a minimum 0.55mm to 1.55mm base metal thickness.

02

2.1 Material Selection

thickness should be selected based on the intended applications. For general cladding, fascia board and fencing applications, 7.5mm thick plank is adequate. When higher performance (stronger and more impact resistant) material is desired, use 9.0mm .

For best result, the use of 9.0mm thick is highly recommended for fascia board application where rafters are to be exposed (in absence of eaves lining board).

Trimming plank to a size less than the standard width will reduce its capacity to withstand loads. In instances where reduced-width planks are desirable such as for fencing application, always refer to Hume

Cemboard before specifying or applying them.

Do not apply in areas where it remains in contact with standing water.

2.2 Framing Specification

can be applied to timber or light gauge steel framing members. Construction shall be in accordance with local building practice.

Framing components must have adequate durability for the intended use. These durability criteria shall among others include resistance to weather; corrosion and pest (i.e. termite attack).

Framing timber should be thoroughly dry and selected to minimize shrinkage when planks are installed.

Steel framing must be fabricated from cold-formed galvanized light gauge steel of a minimum 0.55mm to 1.60mm base metal thickness.

As the straightness of finished wall is highly dependent on workmanship of framework, best result can be achieve when frame straightness is between 3mm to 4mm in any 3000mm length.

2.3 Batten Specification

Thick hot rolled structural steel sections and masonry wall must be battened prior to installation of cladding.

Use timber batten with a minimum of 25mm thick x 50mm wide to allow adequate nail penetration.

Steel battens must have a minimum 35mm face width. They are typically 'Z' or top hat sections. Use only galvanised light gauge steel of a minimum 0.55mm to 1.55mm base metal thickness.

2.4 Fasteners

Select the appropriate type of fasteners based on the type of framing.

Fasteners should have acceptable level of durability and be suitably coated for the intended application.

can be fixed by hand nailing or air gun nailing. For screw

fixing, use screw gun with high torque and variable speed of zero to

2,500 revolution per minute fitted with a depth control attachment.

Nail head should finish flush with the face and avoid overdriving.

Drive screw slightly below the plank face and cover fastener head with exterior grade cementitious patching compound. Smoothen with sandpaper if necessary before painting.

2.5 Sealing Joints and Gaps

Gaps at plank joints, corners and openings must be sealed with flexible/ paintable polyurethane sealant. Sealant must be compatible with cementitious panel products. Apply masking tape at both plank edges and start filling the bottom edge and squeezing the sealant in the upward direction. Use spatula to smoothen and remove any excess sealant Remove masking tape immediately upon completion.

Sealant manufacturer's instruction must be adhered to. Sealant must only be painted as recommended by the manufacturer.

2.6 Jointing Against other Material

When butt jointing and other building materials such as masonry wall, a minimum of 6mm gap must be provided. Seal gap with paintable/ flexible sealant, as shown in Figure 1.

Fasteners to Timber

Table: Fastener Specification

Fasteners to Steel masonry wall

2.8mm Ø x 40mm Wire Nails

Steel thickness 0.55mm to 0.75mm

No. 8 x 32mm Self-embedding head, self-drilling Screws

Steel thickness 0.8mm to 1.6mm

No. 8 x 32mm Self-embedding head, self-drilling “Wing Teks” Screws

1.

2.

3.

4.

5.

Note:

Drive nail head snug or flush with plank face.

Pre-drilling is required when nailing between 20mm to 50mm from the plank end.

Drive screw heads not more than 1mm below plank face.

Overdriven fastener point should be cover with exterior grade cementitious patching compound before painting.

Hold plank firmly against the frame while driving the fasteners.

apply sealant

6mm

vapour permeable sarking/ building paper (optional) cladding

Figure 1: Jointing with other material

3 External Wall & Gable End Cladding

3.1 General

is suitable for general wall cladding application when a lightweight wall system is preferred. The usage includes construction of new buildings such as residential dwellings and resorts. In addition,

PRIMAplank can also be used for renovation/ extension of existing buildings especially in the construction of upper storey.

3.2 Framing Construction

must be supported at 600mm maximum centres. Refer

Figure 2. The minimum stud face width shall be as follows:-

• Timber framing - 50mm min.

• Steel framing - 35mm min.

Timber framing is typically 50mm x 75mm and light-gauge metal framing is typically 35mm x 64mm x 0.55mm BMT.

When on-stud jointing is preferred, stud face width must be increased to provide for adequate edge fixing distance. Use frame off-cuts to

pack stud at plank joint if required.

nogging top plate stud

maximum tres stud spacing

600mm

600mm

600mm

mineral wool/ fibreglass insulation (optional) vapour permeable sarking/ building paper (optional) end joints to be staggered

(refer joint detail options) cladding

Figure 2: Horizontal planking

flashing starter strip

03

3.3 Flashing

When applied as external wall cladding it is a good building practice to apply flashing material at corners, above the head and under the

sill of an opening.

3.4 Sarking

During windy condition, the external pressure would generally be greater than the building's internal pressure. The pressure differential will likely draw water into the wall cavity through the plank's joints and laps. It is recommended to install vapour permeable sarking between and the framing surface. The use of reflective

sarking will enhance the thermal insulation property of the cladding system.

3.5 Plank Overlaps

For external cladding applications, plank must overlap the previous course by a minimum of 25mm. Plank overlap may be increased to achieve the desired exposed plank surface. Higher overlaps may also improve the weatherproofing of a framed-wall particularly when sarking material is not applied. When necessary, overlap may be increased to obtain full-course planking to match the wall height.

To facilitate plank installation with consistent overlaps, use a lap

gauge. A lap gauge can be fabricated from off-cuts or timber piece. Refer Figure 3.

3.7 Fixing to Timber

When applied onto timber framing, must be nailed at centre of overlap through both thicknesses, as shown in Figure 4.

3.8 Fixing to Steel

Planks are screwed to light gauge steel framing through the top plank only. Refer Figure 5.

3.9 Joints

Joint options are shown below. When applied as wall cladding, plank joints should preferably be staggered between each plank course.

"off-stud" jointing method incorporates proprietary PVC

jointer between plank ends. Refer Figure 6.

On-stud jointing can be done by butt jointing plank ends with moderate contact. Alternatively, provide a nominal 3mm gap and seal joint with exterior grade paintable/ flexible sealant. Refer Figure 7.

3.11 Corners

Internal and external corners may be finished with timber stops as illustrated in Figure 9.

Alternatively, when timber posts are utilized, abutted to the side of the posts. Refer Figure 10.

3.10 Ground Clearance

Provide a minimum of 150mm clearance between bottom edge of plank (or starter strip) and the earth as shown in Figure 8.

3.12 Details at Openings

When applying plank at around window or door openings, allow an approximately 5mm clearance at the sill, jamb and head. Seal gap with paintable/ flexible sealant Do not apply sealant between head

flashing and plank edge.

2.1 Material Selection

thickness should be selected based on the intended applications. For general cladding, fascia board and fencing applications, 7.5mm thick plank is adequate. When higher performance (stronger and more impact resistant) material is desired, use 9.0mm .

For best result, the use of 9.0mm thick is highly recommended for fascia board application where rafters are to be exposed (in absence of eaves lining board).

Trimming plank to a size less than the standard width will reduce its capacity to withstand loads. In instances where reduced-width planks are desirable such as for fencing application, always refer to Hume

Cemboard before specifying or applying them.

Do not apply in areas where it remains in contact with standing water.

2.2 Framing Specification

can be applied to timber or light gauge steel framing members. Construction shall be in accordance with local building practice.

Framing components must have adequate durability for the intended use. These durability criteria shall among others include resistance to weather; corrosion and pest (i.e. termite attack).

Framing timber should be thoroughly dry and selected to minimize shrinkage when planks are installed.

Steel framing must be fabricated from cold-formed galvanized light gauge steel of a minimum 0.55mm to 1.60mm base metal thickness.

As the straightness of finished wall is highly dependent on workmanship of framework, best result can be achieve when frame straightness is between 3mm to 4mm in any 3000mm length.

2.3 Batten Specification

Thick hot rolled structural steel sections and masonry wall must be battened prior to installation of cladding.

Use timber batten with a minimum of 25mm thick x 50mm wide to allow adequate nail penetration.

Steel battens must have a minimum 35mm face width. They are typically 'Z' or top hat sections. Use only galvanised light gauge steel of a minimum 0.55mm to 1.55mm base metal thickness.

2.4 Fasteners

Select the appropriate type of fasteners based on the type of framing.

Fasteners should have acceptable level of durability and be suitably coated for the intended application.

can be fixed by hand nailing or air gun nailing. For screw

fixing, use screw gun with high torque and variable speed of zero to

2,500 revolution per minute fitted with a depth control attachment.

Nail head should finish flush with the face and avoid overdriving.

Drive screw slightly below the plank face and cover fastener head with exterior grade cementitious patching compound. Smoothen with sandpaper if necessary before painting.

2.5 Sealing Joints and Gaps

Gaps at plank joints, corners and openings must be sealed with flexible/ paintable polyurethane sealant. Sealant must be compatible with cementitious panel products. Apply masking tape at both plank edges and start filling the bottom edge and squeezing the sealant in the upward direction. Use spatula to smoothen and remove any excess sealant Remove masking tape immediately upon completion.

Sealant manufacturer's instruction must be adhered to. Sealant must only be painted as recommended by the manufacturer.

2.6 Jointing Against other Material

When butt jointing and other building materials such as masonry wall, a minimum of 6mm gap must be provided. Seal gap with paintable/ flexible sealant, as shown in Figure 1.

3.1 General

is suitable for general wall cladding application when a lightweight wall system is preferred. The usage includes construction of new buildings such as residential dwellings and resorts. In addition,

PRIMAplank can also be used for renovation/ extension of existing buildings especially in the construction of upper storey.

3.2 Framing Construction

must be supported at 600mm maximum centres. Refer

Figure 2. The minimum stud face width shall be as follows:-

• Timber framing - 50mm min.

• Steel framing - 35mm min.

Timber framing is typically 50mm x 75mm and light-gauge metal framing is typically 35mm x 64mm x 0.55mm BMT.

When on-stud jointing is preferred, stud face width must be increased to provide for adequate edge fixing distance. Use frame off-cuts to

pack stud at plank joint if required.

3.3 Flashing

When applied as external wall cladding it is a good building practice to apply flashing material at corners, above the head and under the

sill of an opening.

3.4 Sarking

During windy condition, the external pressure would generally be greater than the building's internal pressure. The pressure differential will likely draw water into the wall cavity through the plank's joints and laps. It is recommended to install vapour permeable sarking between and the framing surface. The use of reflective

sarking will enhance the thermal insulation property of the cladding system.

3.5 Plank Overlaps

For external cladding applications, plank must overlap the previous course by a minimum of 25mm. Plank overlap may be increased to achieve the desired exposed plank surface. Higher overlaps may also improve the weatherproofing of a framed-wall particularly when sarking material is not applied. When necessary, overlap may be increased to obtain full-course planking to match the wall height.

To facilitate plank installation with consistent overlaps, use a lap

gauge. A lap gauge can be fabricated from off-cuts or timber piece. Refer Figure 3.

3.6 Installation Procedure

These steps provide a general guide for installation of .

1.

2.

3.

4.

5.

6.

7.

8.

9.

10.

11.

Ensure framing is true and align prior to fixing .

Apply building paper sarking over the framework.

Fix flashing at all internal and external corner and heads of openings such as door and window.

Install timber moulds at internal and external corners.

Secure a 40mm wide starter strip or treated timber strip along the bottom plate.

Use a spirit level to locate the top edge of the first course of the plank

Drive a series of guide nails around the perimeter of the timber framework to indicate the top edge of the first course of the plank.

Fix the first plank starting from the external corner. Set the top

edge of the plank flush against the guide nails and the end

abutting the (moderate contact) timber corner stop. Drive fastener to the bottom plate through the plank thickness and the starter strip at 200mm centres maximum.

Fix the balance of the planks of the first course around the building. Planks may be joined with proprietor PVC jointer.

Provide a minimum of 25mm overlap between each successive plank course. Measure the total wall height to be clad and calculate the suitable overlap so that a near full-width plank finishes at the top of the clad wall. Remove the guide nails and continue the next course of the plank with an off-cut plank. This is done to ensure that the plank joints would be staggered

between courses.

Check level occasionally.

7.5mm

new/ subsequent plank course sarking/ building previous course stud

7.5mm

x= net cover width (plank width - overlap) eg 230mm - 25mm = 205mm

Figure 3: Lap gauge

3.7 Fixing to Timber

When applied onto timber framing, must be nailed at centre of overlap through both thicknesses, as shown in Figure 4.

vapour permeable sarking/ building paper (optional)

(

25mm min. overlap internal lining board

3.8 Fixing to Steel

Planks are screwed to light gauge steel framing through the top plank only. Refer Figure 5.

vapour permeable sarking/ building paper (optional)

( flat head nail fixed at centre of overlap cladding

/

Figure 4: Fastening to timber frame

25mm min. overlap cladding screw fixed through the top plank only

25mm min. overlap internal lining board

/

Figure 5: Fastening to steel frame

04

3.9 Joints

Joint options are shown below. When applied as wall cladding, plank joints should preferably be staggered between each plank course.

"off-stud" jointing method incorporates proprietary PVC

jointer between plank ends. Refer Figure 6.

On-stud jointing can be done by butt jointing plank ends with moderate contact. Alternatively, provide a nominal 3mm gap and seal joint with exterior grade paintable/ flexible sealant. Refer Figure 7.

3.11 Corners

Internal and external corners may be finished with timber stops as illustrated in Figure 9.

Alternatively, when timber posts are utilized, abutted to the side of the posts. Refer Figure 10.

3.10 Ground Clearance

Provide a minimum of 150mm clearance between bottom edge of plank (or starter strip) and the earth as shown in Figure 8.

3.12 Details at Openings

When applying plank at around window or door openings, allow an approximately 5mm clearance at the sill, jamb and head. Seal gap with paintable/ flexible sealant Do not apply sealant between head

flashing and plank edge.

3.3 Flashing

When applied as external wall cladding it is a good building practice to apply flashing material at corners, above the head and under the

sill of an opening.

3.4 Sarking

During windy condition, the external pressure would generally be greater than the building's internal pressure. The pressure differential will likely draw water into the wall cavity through the plank's joints and laps. It is recommended to install vapour permeable sarking between and the framing surface. The use of reflective

sarking will enhance the thermal insulation property of the cladding system.

3.5 Plank Overlaps

For external cladding applications, plank must overlap the previous course by a minimum of 25mm. Plank overlap may be increased to achieve the desired exposed plank surface. Higher overlaps may also improve the weatherproofing of a framed-wall particularly when sarking material is not applied. When necessary, overlap may be increased to obtain full-course planking to match the wall height.

To facilitate plank installation with consistent overlaps, use a lap

gauge. A lap gauge can be fabricated from off-cuts or timber piece. Refer Figure 3.

3.7 Fixing to Timber

When applied onto timber framing, must be nailed at centre of overlap through both thicknesses, as shown in Figure 4.

3.8 Fixing to Steel

Planks are screwed to light gauge steel framing through the top plank only. Refer Figure 5.

3.1 General

is suitable for general wall cladding application when a lightweight wall system is preferred. The usage includes construction of new buildings such as residential dwellings and resorts. In addition,

PRIMAplank can also be used for renovation/ extension of existing buildings especially in the construction of upper storey.

3.2 Framing Construction

must be supported at 600mm maximum centres. Refer

Figure 2. The minimum stud face width shall be as follows:-

• Timber framing - 50mm min.

• Steel framing - 35mm min.

Timber framing is typically 50mm x 75mm and light-gauge metal framing is typically 35mm x 64mm x 0.55mm BMT.

When on-stud jointing is preferred, stud face width must be increased to provide for adequate edge fixing distance. Use frame off-cuts to

pack stud at plank joint if required.

3.9 Joints

Joint options are shown below. When applied as wall cladding, plank joints should preferably be staggered between each plank course.

"off-stud" jointing method incorporates proprietary PVC

jointer between plank ends. Refer Figure 6.

stud vapour permeable sarking/ building paper (optional)

( internal lining board

/ damp-proof course or flashing cladding vapour permeable sarking/ building paper (optional) exterior grade timber or fibre cement trim

150mm min. clearance

PVC jointer cladding concrete slab

Figure 8: Ground Clearance

3.11 Corners

Internal and external corners may be finished with timber stops as illustrated in Figure 9.

Figure 6: Off-stud joint

On-stud jointing can be done by butt jointing plank ends with moderate contact. Alternatively, provide a nominal 3mm gap and seal joint with exterior grade paintable/ flexible sealant. Refer Figure 7.

3mm

gap trim-packing for narrow stud as required

(at plank joint only) vapour permeable sarking/ building paper (optional) nailing to support (pre-drilling when nailing between 20mm to 50mm from plank end) moderate contact or allow

3mm gap and seal gap with paintable/ flexible sealant cladding internal lining corner studs vapour permeable sarking/ building paper (optional) flashing (not required when reflective sarking is used)

External Corner

25 x 50mm timber stop cladding

Figure 9: Timber stop corners

Internal Corner

Alternatively, when timber posts are utilized, abutted to the side of the posts. Refer Figure 10.

stud timber post

3.10 Ground Clearance

Figure 7: On-stud joint

Provide a minimum of 150mm clearance between bottom edge of plank (or starter strip) and the earth as shown in Figure 8.

cladding

3mm gap (apply sealant) vapour permeable sarking/ building paper (optional)

External corner

internal lining

Internal corner

Figure 10: Timber post corners

05

3.12 Details at Openings

When applying plank at around window or door openings, allow an approximately 5mm clearance at the sill, jamb and head. Seal gap with paintable/ flexible sealant Do not apply sealant between head

flashing and plank edge.

4.1 General

can be clad onto masonry wall to enhance the aesthetic appearance of residential or commercial buildings.

4.2 Battening Requirement

Masonry wall must be battened prior to applying . Battens must be spaced vertically at 600mm maximum centres. Ensure batten's straightness is within the acceptable tolerance. Battens must be adequately fastened onto the masonry wall.

4.3 Installation Method

may be installed horizontally. In any case, support must be provided at 600mm centres. lnstallation method is similar to that of external cladding application.

Battens can be applied directly onto relatively flat/ even masonry wall. Refer Figure 15.

Provide spacers or brackets when battening uneven masonry wall as shown in Figure 16. Alternatively, sub-framing may be installed horizontally to uneven surface at approximately 1500mm maximum interval before securing the battens. All framing components must be adequately secured onto masonry wall. Consult a qualified engineer to verify structural adequacy if required.

4.8 Wall-to-Eaves Junction

Provide adequate ventilation between masonry wall and cladding. The ventilation can either be provided through the roof or below the eaves. Ventilated path though the roof is depicted in

Figure 21 below.

4.4 Sarking

It is recommended to install a vapour permeable sarking material on the masonry wall prior to fixing battens.

4.5 Jointing

Planks can be jointed with PVC jointer or Butt Joined. These jointing methods are similar to the external cladding joints shown in Figure 6

& 7.

4.6 Corners

Internal and external corners can be decorated with exterior grade timber trim. Trim can also be fabricated using cladding, cut to the desired width. Refer Figure 17.

4.7 Opening

Door or window opening may be finished with trims. Provide Smm gap between and trims around the opening as described in Figure11.

When desired, opening may be decorated with in-situ concrete or

pre-formed coping as illustrated in Figure 18, 19 and 20.

3.3 Flashing

When applied as external wall cladding it is a good building practice to apply flashing material at corners, above the head and under the

sill of an opening.

3.4 Sarking

During windy condition, the external pressure would generally be greater than the building's internal pressure. The pressure differential will likely draw water into the wall cavity through the plank's joints and laps. It is recommended to install vapour permeable sarking between and the framing surface. The use of reflective

sarking will enhance the thermal insulation property of the cladding system.

3.5 Plank Overlaps

For external cladding applications, plank must overlap the previous course by a minimum of 25mm. Plank overlap may be increased to achieve the desired exposed plank surface. Higher overlaps may also improve the weatherproofing of a framed-wall particularly when sarking material is not applied. When necessary, overlap may be increased to obtain full-course planking to match the wall height.

To facilitate plank installation with consistent overlaps, use a lap

gauge. A lap gauge can be fabricated from off-cuts or timber piece. Refer Figure 3.

3.7 Fixing to Timber

When applied onto timber framing, must be nailed at centre of overlap through both thicknesses, as shown in Figure 4.

3.8 Fixing to Steel

Planks are screwed to light gauge steel framing through the top plank only. Refer Figure 5.

3.1 General

is suitable for general wall cladding application when a lightweight wall system is preferred. The usage includes construction of new buildings such as residential dwellings and resorts. In addition,

PRIMAplank can also be used for renovation/ extension of existing buildings especially in the construction of upper storey.

3.2 Framing Construction

must be supported at 600mm maximum centres. Refer

Figure 2. The minimum stud face width shall be as follows:-

• Timber framing - 50mm min.

• Steel framing - 35mm min.

Timber framing is typically 50mm x 75mm and light-gauge metal framing is typically 35mm x 64mm x 0.55mm BMT.

When on-stud jointing is preferred, stud face width must be increased to provide for adequate edge fixing distance. Use frame off-cuts to

pack stud at plank joint if required.

3.9 Joints

Joint options are shown below. When applied as wall cladding, plank joints should preferably be staggered between each plank course.

"off-stud" jointing method incorporates proprietary PVC

jointer between plank ends. Refer Figure 6.

On-stud jointing can be done by butt jointing plank ends with moderate contact. Alternatively, provide a nominal 3mm gap and seal joint with exterior grade paintable/ flexible sealant. Refer Figure 7.

3.10 Ground Clearance

Provide a minimum of 150mm clearance between bottom edge of plank (or starter strip) and the earth as shown in Figure 8.

3.11 Corners

Internal and external corners may be finished with timber stops as illustrated in Figure 9.

Alternatively, when timber posts are utilized, abutted to the side of the posts. Refer Figure 10.

3.12 Details at Openings

When applying plank at around window or door openings, allow an approximately 5mm clearance at the sill, jamb and head. Seal gap with paintable/ flexible sealant Do not apply sealant between head

flashing and plank edge. optional vapour permeable sarking to lap over flashing head flashing backing piece as required

5mm gap between plank and flashing

5mm clearance around opening

(apply sealant) window frame minimum 25mm thick window trim cladding full plank width is recommended

Figure 11: Window/ door opening detail

cladding vapour permeable sarking/ building paper (optional) nominal 5mm clearance

(do not apply sealant) head flashing

( internal lining board

/

Figure 12: Head Flashing Detail

lintel

) architrave window frame window frame sill flashing architrave window frame backing piece as required architrave

( internal lining board

/

) vapour permeable sarking/ building paper (optional) cladding backing piece as required

( internal lining board

/

nominal 5mm clearance

(apply sealant) vapour permeable sarking/ building paper (optional)

Figure 14: Door/ window jamb detail

cladding

Figure 13: Sill Flashing Detail

4.1 General

can be clad onto masonry wall to enhance the aesthetic appearance of residential or commercial buildings.

4.2 Battening Requirement

Masonry wall must be battened prior to applying . Battens must be spaced vertically at 600mm maximum centres. Ensure batten's straightness is within the acceptable tolerance. Battens must be adequately fastened onto the masonry wall.

4.3 Installation Method

may be installed horizontally. In any case, support must be provided at 600mm centres. lnstallation method is similar to that of external cladding application.

4 Cladding To Masonry Wall

Battens can be applied directly onto relatively flat/ even masonry wall. Refer Figure 15.

Provide spacers or brackets when battening uneven masonry wall as shown in Figure 16. Alternatively, sub-framing may be installed horizontally to uneven surface at approximately 1500mm maximum interval before securing the battens. All framing components must be adequately secured onto masonry wall. Consult a qualified engineer to verify structural adequacy if required.

06

4.8 Wall-to-Eaves Junction

Provide adequate ventilation between masonry wall and cladding. The ventilation can either be provided through the roof or below the eaves. Ventilated path though the roof is depicted in

Figure 21 below.

4.4 Sarking

It is recommended to install a vapour permeable sarking material on the masonry wall prior to fixing battens.

4.5 Jointing

Planks can be jointed with PVC jointer or Butt Joined. These jointing methods are similar to the external cladding joints shown in Figure 6

& 7.

4.6 Corners

Internal and external corners can be decorated with exterior grade timber trim. Trim can also be fabricated using cladding, cut to the desired width. Refer Figure 17.

4.7 Opening

Door or window opening may be finished with trims. Provide Smm gap between and trims around the opening as described in Figure11.

When desired, opening may be decorated with in-situ concrete or

pre-formed coping as illustrated in Figure 18, 19 and 20.

masonry wall masonry wall vapour permeable sarking/ building paper (optional) timber/ steel batten installed vertically at 600mm max. centres cladding installed horizontal

Figure 15: Battening onto flat masonry wall

vapour permeable sarking/ building paper (optional) framing spacer or bracket at

1200mm centres timber/ steel batten installed vertically at 600mm max. centres cladding installed horizontal

Figure 16: Battening onto uneven masonry wall

4.4 Sarking

It is recommended to install a vapour permeable sarking material on the masonry wall prior to fixing battens.

4.5 Jointing

Planks can be jointed with PVC jointer or Butt Joined. These jointing methods are similar to the external cladding joints shown in Figure 6

& 7.

4.6 Corners

Internal and external corners can be decorated with exterior grade timber trim. Trim can also be fabricated using cladding, cut to the desired width. Refer Figure 17.

External Corner

masonry wall exterior timber or fibre cement trim vapour permeable sarking/ building paper (optional) masonry wall timber/ steel batten installed vertically at 600mm max. centres cladding nominal 5mm clearance

(apply sealant) in-situ concrete or pre-formed coping to architect’s approval window frame

Figure 18: Window head detail

cladding vapour permeable sarking/ building paper (optional)

internal Corner

Figure 17: Corner details

4.7 Opening

Door or window opening may be finished with trims. Provide Smm gap between and trims around the opening as described in Figure11.

When desired, opening may be decorated with in-situ concrete or

pre-formed coping as illustrated in Figure 18, 19 and 20.

in-situ concrete or pre-formed coping to architect’s approval window frame nominal 5mm clearance

(apply sealant) vapour permeable sarking/ building paper (optional) cladding masonry wall

Figure 19: Window sill detail

07

4.1 General

can be clad onto masonry wall to enhance the aesthetic appearance of residential or commercial buildings.

4.2 Battening Requirement

Masonry wall must be battened prior to applying . Battens must be spaced vertically at 600mm maximum centres. Ensure batten's straightness is within the acceptable tolerance. Battens must be adequately fastened onto the masonry wall.

4.3 Installation Method

may be installed horizontally. In any case, support must be provided at 600mm centres. lnstallation method is similar to that of external cladding application.

Battens can be applied directly onto relatively flat/ even masonry wall. Refer Figure 15.

Provide spacers or brackets when battening uneven masonry wall as shown in Figure 16. Alternatively, sub-framing may be installed horizontally to uneven surface at approximately 1500mm maximum interval before securing the battens. All framing components must be adequately secured onto masonry wall. Consult a qualified engineer to verify structural adequacy if required.

4.8 Wall-to-Eaves Junction

Provide adequate ventilation between masonry wall and cladding. The ventilation can either be provided through the roof or below the eaves. Ventilated path though the roof is depicted in

Figure 21 below.

4.4 Sarking

It is recommended to install a vapour permeable sarking material on the masonry wall prior to fixing battens.

4.5 Jointing

Planks can be jointed with PVC jointer or Butt Joined. These jointing methods are similar to the external cladding joints shown in Figure 6

& 7.

4.6 Corners

Internal and external corners can be decorated with exterior grade timber trim. Trim can also be fabricated using cladding, cut to the desired width. Refer Figure 17.

4.7 Opening

Door or window opening may be finished with trims. Provide Smm gap between and trims around the opening as described in Figure11.

When desired, opening may be decorated with in-situ concrete or

pre-formed coping as illustrated in Figure 18, 19 and 20.

4.1 General

can be clad onto masonry wall to enhance the aesthetic appearance of residential or commercial buildings.

4.2 Battening Requirement

Masonry wall must be battened prior to applying . Battens must be spaced vertically at 600mm maximum centres. Ensure batten's straightness is within the acceptable tolerance. Battens must be adequately fastened onto the masonry wall.

4.3 Installation Method

may be installed horizontally. In any case, support must be provided at 600mm centres. lnstallation method is similar to that of external cladding application.

Battens can be applied directly onto relatively flat/ even masonry wall. Refer Figure 15.

Provide spacers or brackets when battening uneven masonry wall as shown in Figure 16. Alternatively, sub-framing may be installed horizontally to uneven surface at approximately 1500mm maximum interval before securing the battens. All framing components must be adequately secured onto masonry wall. Consult a qualified engineer to verify structural adequacy if required.

window frame masonry wall

4.8 Wall-to-Eaves Junction

Provide adequate ventilation between masonry wall and

plank

cladding. The ventilation can either be provided through the roof or below the eaves. Ventilated path though the roof is depicted in

Figure 21 below.

vapour permeable sarking/ building paper (optional) fascia board ventilation through soffit/ roof

/

eaves lining board masonry wall masonry wall vapour permeable sarking/ building paper (optional) cladding in-situ concrete or pre-formed coping to architect’s approval nominal 5mm clearance

(apply sealant)

Figure 20: Window detail

cladding timber/ steel batten installed vertically at 600mm max. centres

Figure 21: Wall ventilation detail

5 Fascia Board Introductions

5.1 General

superior durability makes it a perfect choice for fascia board around the roof perimeter. With the choice of 'smooth' and

'woodgrain' texture, fascia board is not only aesthetically pleasing but also cost effective.

5.2 Support

fascia board is normally fixed to timber or metal rafters/

trusses with spacing not exceeding 600mm centres. When support spacing exceeds 600mm, provide a continuous battening behind the fascia board. Alternatively, a 'dummy' rafter/ truss should be provided as intermediate support. The use of 9mm thick plank is highly recommended when support spacing is more than 600mm centres.

5.3 Installation

Apply a minimum of 2 fasteners at each rafter or truss end. Drive fastener 12mm from plank edge and 50mm from corner.

Fix a metal angle capping at ends of metal rafters/ trusses to facilitate

fascia board installation as described in Figure 23.

Fixings of attachment (such as bracket for gutter) to fascia board must be connected to the roof structural element.

5.4 Joints

Planks can be jointed with PVC jointer or Butt Joined. Provide 3mm gap if joint is to be sealed. These jointing options are shown in Figure

22 & 23. When Off-support Joint without PVC jointer is preferred, provide additional metal/ timber backing piece behind the fascia board. Ensure planks are secured to the backing piece. Hold backing

piece firmly while driving the fasteners.

rafter/ truss at 600mm centres roof batten fastener fascia board t fast ener a

300mm

max.

PVC mould (to be located not more than 150mm away from rafter/ truss in absence of eaves lining batten) timber beading as required eaves lining batten/ support

*PVC mould is available for

7.5mm thick plank only eaves lining board

Figure 22: PVC joint (Timber frame)

08

metal rafter/ truss at

600mm max. centres backing piece

12mm

min.

fascia board

09

50mm

min fastener

3mm gap sealed with flexible/ paintable sealant butt joint (moderate contact) timber beading as required eaves lining board

Figure 23: Butt joint & sealant (Metal rafter/ truss)

6 Decorative Fencing

6.1 General

can be incorporated in the construction of conventional

masonry, timber or steel framed fencing for medium to high-end terrace houses as well as semi-D or bungalows. 9mm is recommended for this application.

6.2 Framing Requirement

Framing durability must satisfy the minimum requirement of the intended use. It is recommended to use exterior grade (treated

timber) or steel hollow section to form the support. Steel hollow

section must be suitably coated to resist external weather.

6.3 Installation

can be installed vertically or horizontally. In any case, support must be provided at 400mm centres maximum. Install fasteners approximately 30mm from edge and 50mm from corner of plank. Fix at least 2 fasteners at each support.

ends must not overhang (cantilever) more than 100mm from the support.

The following fasteners are suitable if it is desired to have screw heads exposed:-

• Timber Support: Use No.10 x 30mm Hexagon head, Type 17 point screws

• Steel support: Use No.10 x 25mm Hexagon head, self-drilling

point screws

Refer to screw manufacturer's instruction on the minimum screw penetration to framing member: gap to architect approval

30mm min.

Horizontal Section

fencing applied vertically gap to architect approval

100mm overhang

100mm overhang timber/ steel frame

Front Elevation

Figure 24: Vertical fencing

30mm min.

from edge masonry wall

timber/ steel frame at

400mm max.centre

gap to architect approval fencing applied horizontally

610mm

max.

timber/ steel frame

30mm min. from edge

Horizontal Section

Figure 25: Horizontal fencing

7 Finishes Recommendations

Under normal circumstances must be coated within

3 months after installation. For best result, decorate with

2 coats of 100% quality acrylic paint. For general-purpose applications, there is no requirement for primers or sealers. Ensure planks are dry prior to painting. For decorative fencing application, plank must be coated on both surfaces and all edges. All plank exposed surfaces and edges must be painted.

masonry work gap to architect approval

Front Elevation

Semi-transparent stains and shellac/ varnish are generally formulated for wood and not suitable for fibre cement products.

In all cases, coating manufacturer's recommendations must be strictly adhered to.

8 Working Instructions

8.1 Cutting

Cutting must be carried out in a well-ventilated area using one of the following methods:-

• Score and Snap - Score the plank face with 'score and snap'. Repeat until depth reaches 1/3 of plank thickness. Snap plank upward to achieve clean break. Trim cut edge with rasp if necessary.

Handling & Storage

must be stacked on flat ground and supported wfth level bearers prior to installation. Ensure all timber bearers of a stacked plank are aligned with other stacks. Improper plank stacking may result in permanent plank deformation that causes unsightly appearance such as waviness.

must always be kept dry, preferably stored under a protected shade. When stored outdoors, it must be protected from water ingress and weather by covering with tarpaulin sheet. Allow wet plank to dry to equilibrium under a natural ventilated condition prior to installation.

To minimize breakages. must be carried with up-right.

Figure 26: Score and Snap Method (left), Machine Cut (right)

8.2 Hand Saw

The use of fine-toothed hand saw coupled with quick jabbing action will normally'produced best result.

8.3 Power Tool

When large amount of plank cutting is involved, use power cutting tool equipped with carbide-tipped or diamondtipped circular saw.

Drilling

Small holes can be formed using high-speed (HSS) drill bits. Larger circular holes can be created by drilling a series of small holes around the perimeter of the proposed hole, and gently tapping out the waste piece. Smoothen the rough drilled edge with rasp if necessary.

10

50 Years Durability

WARRANTY

Hume Cemboard Industries Sdn Bhd (“the Company”) warrants that it will at all times ensure that the products referred to herein (“the Products”) shall be supplied by it to the purchaser free of any manufacturing defects and defective materials used in their manufacture.

In the event and if contrary to this assertion the Products prove to be defective, whether as a result of manufacturing defects or arising from the Company’s use of defective materials, the Company will supply replacement Products. The Company shall, however, have the option and may choose to reimburse the purchaser the purchase price of the Products instead. The Company shall not be liable for any economic or consequential losses arising from any use of defective Products.

This warranty shall be void unless the purchaser has, in its handling and installation of the Products, complied with the recommendations contained in this brochure and other good building practices expected of a reasonable purchaser.

ADVISORY NOTE

Successful installations of Hume Cemboard Industries Sdn Bhd’s Products depend on a large number of factors that are outside of the scope of this brochure. Particular design, detail, construction requirements and workmanship are beyond the control of the Company. As such, Hume Cemboard Industries Sdn Bhd’s warranty does not extend to non-usability of Products or damage to Products arising from poor or defective designs or systems or poor quality of workmanship in the installation of Products.

For more information, please contact us at:

No. 12 Jalan Tandang, 46050 Petaling Jaya, Selangor, Malaysia.

Malaysia Sales Tel: + 603 7625 9999 Fax: +603 7625 7822 Email: [email protected]

Oversea Sales Tel: + 603 7625 3880 Fax: +603 7625 3990 Email: [email protected]

www.primaf

ibrecement.com