Permabase 1/2 in. x 3 ft. x 5 ft. Cement Board Product Brochure

Below you will find brief information for Cement Board PermaBase, PLUS PermaBase, UltraBacker PermaBase, Flex PermaBase. The PermaBase Cement Board is a durable substrate designed to withstand prolonged exposure to moisture. It is made with Portland cement, aggregate and fiberglass mesh, and works well as an underlayment for tub and shower surrounds, countertops, flooring and a variety of other interior and exterior applications. The PermaBase PLUS Cement Board is the same as the PermaBase Cement Board but weighs 25% less. The PermaBase UltraBacker Cement Board has a smooth mesh and mat surface and the 1/4-inch thickness eliminates the need to modify adjacent thresholds when abutting it to carpet, hardwood and other common flooring materials. The PermaBase Flex Cement Board has a very flexible substrate and is ideal to use around archways, beams, columns or anywhere that an evenly curved surface is needed.

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PermaBase

® brand

Cement Board

09 28 00/NGC

Helping You Build Better

With High-Quality Products

And Resources

Founded in 1925, National Gypsum is one of the world’s largest producers of quality building products. For nearly a century, customers like you have looked to us for the best products, service and technical support. With a focus on sustainability, we strive to bring you the finest in construction products, education and resources to meet and exceed your expectations.

With Technical Support

You Can Count On

Great products are nothing without great customer service. For detailed technical information about product applications, installation requirements, code requirements or roof and wall assemblies, call

1-800-NATIONAL

. Talk directly to a technical expert with up-to-date knowledge of products, specifications, building codes and more. Our technical experts can even review your plans and drawings and get back to you with answers to your questions within 48 hours.

With Design That Considers

The Environment

Together, we can attain the highest level of ecological responsibility and resource-efficient technology. National

Gypsum is committed to developing and implementing sustainable green building policies, standards and practices. Beyond offering products that can help contribute to healthier environments and have achieved

GREENGUARD Certification for indoor air quality, we can help you meet the criteria for green programs and LEED credits.

Look Closer

At The Best

Cement Board

Substrate

PermaBase ® Product Line

At A Glance . . . . . . . . . . . . . 4

PermaBase

Cement Board. . . . . . . . . . . 6

PermaBase PLUS ®

Cement Board. . . . . . . . . . 11

PermaBase UltraBacker

Cement Board. . . . . . . . . . 12

PermaBase Flex ®

Cement Board. . . . . . . . . . 13

Installation Guide

How And Where. . . . . . . . 14

Interior Applications . . . . . . . . 14

Accessories . . . . . . . . . . . . . . . . . 14

Exterior Applications. . . . . . . . 17

Cement Board Stucco

Wall Systems (CBSS). . . . . . . 18

Cement Board Masonry Veneer

Wall Systems (CBMV) . . . . . . 19

Continuous Insulation . . . . . . . 20

Technical Data. . . . . . . . . . . 21

Fire-Rated Assemblies. . . . . . . 21

Working Wherever

Your Project Takes You

Choose From Four Types

Of PermaBase

® brand

Cement Board:

More Hard-Working Varieties

With Qualities You Can Depend On

With four types of PermaBase ® brand

Cement Board to choose from, you’ll find a match for most any project. This durable substrate withstands prolonged exposure to moisture in both interior and exterior applications.

Lightweight and easy to install, PermaBase promises to deliver for the long run – with the industry’s best warranties. It is also GREENGUARD

Certified for low-chemical emissions, which can contribute to healthier indoor environments.

Saving You Time And Money

These exclusive PermaBase features translate to cost savings for you:

EdgeTech ® Technology from handling.

– This patented, reinforced edge allows fasteners to be installed closer to the board’s edge and reduces damage

Polystyrene Beads – Embedded in the PermaBase core, these beads help to lighten the board’s weight, improve the ease of cutting, and create lower water absorption, preventing the mortar/finish adhesive from drying prematurely.

Our PermaBase

Product Family

PermaBase

® 1

Cement Board

The original that set

the industry standard.

PermaBase PLUS

Cement Board

Weighs 25% less than

other cement boards on

the market.

UltraBacker

Cement Board

Provides excellent rigidity

for special applications

with the lowest water-

absorption rate.

4 PermaBase Flex

Cement Board

Very flexible yet strong,

and ideal for use around

archways, columns, stairwells

– wherever an evenly

curved surface is required.

APPLICATIONS

Product Floors Countertops Walls Ceilings Exteriors

1/4" PermaBase

1/4" UltraBacker

�

7/16" PermaBase PLUS �

1/2" PermaBase �

5/8" PermaBase �

1/2" PermaBase FLEX �

Recommended:

� Yes �No

�

Building In Strength

And Quality

Reinforce With The Best Rigid Substrate: PermaBase

® brand

Cement Board

PermaBase

® provides a durable surface designed to withstand prolonged exposure to moisture. Made with

Portland cement, aggregate and fiberglass mesh, it works well as an underlayment for tub and shower surrounds, countertops, flooring and a variety of other interior and exterior applications. Lightweight and easy to install, our patented EdgeTech

Technology allows a closer nail or screw application.

Quality To The Core

3 2

1 .

Patented Reinforced Edge

2.

Fiberglass Mesh

3.

Cementitious Core

Resists Moisture Better

Stays intact when exposed to water: will not rot, disintegrate or swell – built for the long run m

Achieves the industry’s lowest water-absorption rating (ASTM C 473) – offering better installation m

Helps inhibit mold growth with the highest possible score on mold tests (ASTM D 3273 and ASTM G 21)

Stays Strong And Lasts Long

Resists impact and remains dimensionally stable – extending the life of your project m

Holds up to the toughest conditions

Installs Quickly

Lightweight and easy to cut – speeding up installation m

Reduces jobsite waste – easier, cleaner cut m

Patented EdgeTech ® Technology allows for a closer edge fastening and reduces damage from handling

Works For Interior

And Exterior Projects

– One Panel, Many Applications m

Adhere tile, stone or thin brick directly to PermaBase

in exterior applications – saving time and money m

Durable substrate for direct-applied coating systems m

Meets UL classifications for one- and two-hour

fire-rated assemblies m

Building code approved – one substrate that does the job of many

Offers Best In Class Warranty

Lifetime Limited Warranty: Interior applications m

15-Year Limited Warranty: Exterior applications

What Sets PermaBase

Apart From The Rest?

Physical Feature Benefits

Low Weight Glass Mesh Cement Board

Reinforced Edge

Fastens Near Edge With No Breakout

Highest Damage Resistancy From Handling

Cleanest To Score And Snap

Lowest Water Absorption

Meets 40 psf Rating Wind Load Test Results

(Stud spacing 16" o.c.)

Cuts With Utility Knife Vs. Power Tools

Standard Fasteners Countersink Into Board

Can Be Used In Both Residential And

Commercial Steam Rooms And Saunas

Inorganic Vs. Organic Core

Lifetime Limited Warranty For Interior Use

15-Year Warranty For Exterior Use

Product Feature: Yes �No

PermaBase

Cement Board

Other

Cement Boards

�

Fiber

Cement Boards

�

PermaBase ® brand

Cement Board

Expanding Your Project Horizon

Dream Up Your Designs

– Interior And Exterior

Install Fast, Cut Costs And Improve Quality

With PermaBase

® brand

Cement Board

Stays strong – manufactured from cement and fiberglass reinforcement m

Provides consistent quality – produced in a factory controlled environment and meets ASTM C 1325 m

Remains dimensionally stable m

Resists moisture and mold m

Cuts and handles easily – patented EdgeTech

Technology allows fasteners to be installed closer to the board’s reinforced edge and reduces damage from handling m

Absorbs less water – providing greater open time and increased workability of adhering materials m

Offers performance enhancement options – stronger and lighter alternative to traditional methods

Interior Applications

PermaBase including:

® is a superior underlayment for many interior applications, m

Kitchens

• Countertops

• Backsplashes m

Bathrooms

• Shower and tub enclosures

• Garden and whirlpool tubs

• Steamrooms and saunas m

Special Additions

• Swimming pool and whirlpool

decks and enclosures m

Flooring

• For kitchens and bathrooms

• For entryways and foyers

• For laundry rooms m

Walls

• For bathrooms

• For accent walls

• For fireplaces

Exterior Applications

PermaBase provides an excellent substrate for many in-demand exterior applications, including

Cement Board Masonry Veneer

Wall System (CBMV), Cement

Board Stucco System (CBSS),

Continuous Insulation (CI), and

Exterior Insulation and Finish

System (EIFS). PermaBase allows the combination of exterior finishes on one continuous wall sheathing, providing greater design flexibility.

Commercial exteriors m

Residential exteriors m

Outdoor kitchens m

Decks

Cement Board Stucco Wall System (CBSS)

Combine the strength and durability of PermaBase with the performance and aesthetics of reinforced base coats and textured finishes. Use in residential and low-rise commercial applications.

Cement Board Stucco Wall

System is designed to: m

Provide increased impact and weather resistance (appropriate for all climates) m

Resist dirt, fading, cracking and peeling – uses 100% acrylic polymers m

Speed up your schedule – easier, cleaner installation than traditional stucco m

Provide drainage system to help prevent water from penetrating behind cladding in frame construction m

Comply with ASTM D 226, protecting approved sheathings/ structural components and helping to evacuate incidental water

Designs you can achieve with this system: m

Attachment of special premolded shapes m

Variety of finishes – many texture and color options

Note: A code-approved Water/Air

Resistive Barrier (WRB) must first be installed to protect the cavity.

See page 18 (Installation Guide).

Cement Board Masonry Veneer

Wall System (CBMV)

Combine the strength and durability of PermaBase with the popular beauty of stone and thin brick veneers. Use in residential and low-rise commercial applications.

Cement Board Masonry

Veneer Wall System is designed to: m

Offer a complete, engineered solution for installation m

Provide increased performance by utilizing polymer modified adhesive mortars (designed for hanging materials) vs. type

S and N mortars (developed for stacking materials) m

Speed up your schedule – faster, easier and cleaner than traditional metal lath/scratch coat method m

Offer the ability to incorporate an effective water-management system (type and placement of water barrier will vary based on local codes and/or warranties)

Designs you can achieve with this system: m

Use for a variety of building exteriors with manufactured or natural stone and thin brick veneers

Note: A code-approved Water/

Air Resistive Barrier (WRB) must first be installed to protect the cavity. For limitations, please see page 19 (Installation Guide).

PermaBase ® brand

Cement Board

Continuous Insulation

As building codes and building insulation requirements become increasingly stringent, you can count on PermaBase to help meet your substrate needs for

Continuous Insulation (CI). CI on the exterior envelope helps to eliminate air and moisture leakage as well as reduce thermal bridging, or the heating/cooling loss transmitted through steel studs.

Methods to install the final exterior finish over the exterior insulation are now being refined, including z-furring channels, batten strips and direct fastener applications.

Use in all types of construction, including commercial, residential and multi-family.

Advantages Of Creating

Continuous Insulation With

PermaBase: m

Provides better thermal comfort, lowers heating and cooling costs, reduces likelihood of trapped moisture m

Helps mitigate the loss of heat/ air conditioning by insulating the studs m

Allows multiple finishes on one substrate m

Works in all climates – adaptable to varying regional system requirements m

Guarantees 15-year exterior warranty – the industry’s leading warranty m

Speeds up your schedule – faster to install than traditional methods

PHYSICAL PROPERTIES

Property Method Test 1/4" 7/16" 1/2" 5/8"

PLUS

Water Absorption %

By Weight/24 Hours

Flexural Strength (psi)

Fastener Holding

(Wet And Dry, lbs.)

(0.400" head diameter)

Weight (psf)

Freeze/Thaw (Cycles)

Per ANSI A118.9

Procedure B

Flame Spread/

Smoke Developed

Compressive Strength

(psi) (Indentation)

ASTM C 473

ASTM C 947

ASTM D 1037

ASTM C 473

ASTM C 666

ASTM E 84

ASTM D 2394

>1750

>85

1.8

100

0/0

N/A

750

>90

2.1

100

0/0

N/A

750

>90

2.9

100

0/0

2250

>1000

>90

3.65

100

0/0

2250

Wind Load

(psf, Studs 16" o.c.)

Thermal “R”/k Value

Bending Radius (ft.)

ASTM E 330 N/A 30 40 40

Property of Material 0.2/2.7 0.28/2.7 0.37/2.7 0.47/.2.7

Property of Material N/A 5 5 5

ASTM D 1037 pass pass pass pass Falling Ball Impact

(12" Drop)

Linear Variation

(Due to change in

moisture content)

ASTM D 1037 <0.07% 0.05% 0.05% 0.05%

Fungus Resistance ASTM G 21 (No growth) (No growth) (No growth) (No growth)

Mold Growth On Surface ASTM D 3273* 10 10 10 10

* When tested by an independent laboratory per ASTM D 3273 (“Standard Test Method for

Resistance to Growth of Mold on the Surface of Interior Coatings in an Environmental Chamber”),

PermaBase achieved a panel score of 10, the highest score possible, indicating no mold growth under the laboratory test conditions. The use of PermaBase in actual installations may not produce the same results as were achieved in controlled laboratory conditions. No material can be considered “mold proof,” nor is it certain that any material will resist mold indefinitely.

# Of Pcs Per Unit

More Reasons PermaBase Is Excellent

For Exterior Applications

Allows multiple finishes on one substrate

Saves time and labor when compared with field-applied metal lath, brown and scratch coat installations

Works rain or shine – less affected by jobsite weather conditions

Scores and snaps for quick installation

Qualifies for multiple-year system warranties

SIZES AND PACKAGING

Size: Thickness, Width And Length

PermaBase Cement Board

1/2" x 32" x 5' (12.7 mm x 813 mm x 1524 mm)

1/2" x 32" x 8' (12.7 mm x 813 mm x 2438 mm)

1/2" x 36" x 4' (12.7 mm x 914 mm x 1219 mm)

1/2" x 36" x 5' (12.7 mm x 914 mm x 1524 mm)

1/2" x 36" x 6' (12.7 mm x 914 mm x 1829 mm)

1/2" x 36" x 8' (12.7 mm x 914 mm x 2438 mm)

1/2" x 48" x 8' (12.7 mm x 1219 mm x 2438 mm)

5/8" x 36" x 5' (15.9 mm x 914 mm x 1524 mm)

5/8" x 48" x 8' (15.9 mm x 1219 mm x 2438 mm)

3/8" x 48" x 8' (9.5 mm x 1219 mm x 2438 mm)

3/8" x 36" x 5' (9.5 mm x 914 mm x 1524 mm)

3/4" x 48" x 8' (19.0 mm x 1219 mm x 2438 mm)

PermaBase Underlayment

1/4" x 48" x 4' (7.9 mm x 1219 mm x 1219 mm)

1/4" x 36" x 5' (7.9 mm x 914 mm x 1524 mm)

* Special Order

50*

40*

50*

20*

For installation instructions and accessories, see page 20.

PermaBase brand

PLUS ® Cement Board

Lighter, Faster And Easier

When You Want The Best Lightweight

Rigid Substrate:

PermaBase

brand

PLUS

Cement Board

This board has the same exceptional qualities built into

PermaBase Cement Board but weighs 25% less. When you need to lighten your load, consider PermaBase

PLUS for all interior applications and select exterior applications, such as outdoor kitchens, grills and decks.

Resists Moisture Better

Stays intact when exposed to water: will not rot, disintegrate or swell – built for the long run m

Achieves the industry’s lowest water-absorption rating (ASTM C 473) – offering better installation m

Helps inhibit mold growth with the highest possible score on mold tests (ASTM D 3273 and ASTM G 21)

Stays Strong And Lasts Long

Resists impact and remains dimensionally stable – extending the life of your project m

Holds up to the toughest conditions

Installs Fast And Easy

Lightweight and easy to cut – speeding up installation m

Reduces jobsite waste – easier, cleaner cut m

Patented EdgeTech ® Technology allows for a closer edge fastening and reduces damage from handling

Works For Interior

And Select Exterior Projects

– One Panel, Many Applications m

Great for all interior applications, as well as exterior

decks and outdoor kitchens m

Meets UL classifications for one- and two-hour

fire-rated assemblies m

Building code approved – one substrate that does the job of many

Offers Best In Class Warranty

Lifetime Limited Warranty: Interior applications m

15-Year Limited Warranty: Exterior applications

SIZES AND PACKAGING

Size: Thickness, Width And Length

7/16" x 36" x 5' (11.1 mm x 914 mm x 1524 mm)

# Of Pcs Per Unit

For installation instructions and accessories, see page 14.

PermaBase brand

UltraBacker ® Cement Board

Smoother, Stronger, More Stable

When You Want The Best Rigid

1/4-Inch Underlayment That Buys

You More Open Time:

PermaBase

brand

UltraBacker

Cement Board

UltraBacker ® features a smooth mesh and mat surface. The

1/4-inch thickness eliminates the need to modify adjacent thresholds when abutting it to carpet, hardwood and other common flooring materials.

Resists Moisture Better

Than Any Other Cement Board m

Features the lowest water-absorption rating of

<4% (ASTM C 473) – offering better installation m

Stays intact when exposed to water: will not rot, disintegrate or swell – built for the long run m

Helps inhibit mold growth with the highest possible score on mold tests (ASTM D 3273 and ASTM G 21)

Stays Strong And Lasts Long

Resists impact and remains dimensionally stable

– extending the life of your project m

Holds up to the toughest conditions m

30% stronger and four times more rigid than competitive 1/4-inch cement board

Installs Fast And Easy

Can be applied over new or existing countertops or as a flooring underlayment – pre-manufactured panels save you time m

Reduces jobsite waste – easier, cleaner cut m

Patented EdgeTech ® Technology allows for a closer edge fastening and reduces damage from handling

Offers Best In Class Warranty

Lifetime Limited Warranty: Interior applications

SIZES AND PACKAGING

Size: Thickness, Width And Length

1/4" x 36" x 5' (7.9 mm x 914 mm x 1524 mm)

# Of Pcs Per Unit

For installation instructions and accessories, see page 14.

PermaBase brand

Flex ® Cement Board

Easy To Bend, Yet Stays Strong

When You Want The Best Substrate

That Bends Like No Other:

PermaBase

® brand

Flex

Cement Board

This very flexible PermaBase substrate is ideal to use around archways, columns, beams, or anywhere you need an evenly curved surface. Consider this also for radius shower walls, tub step-ups and stair construction

– the possibilities are almost endless.

Resists Moisture Better

Stays intact when exposed to water: will not rot, disintegrate or swell – built for the long run m

Achieves the industry’s lowest water-absorption rating (ASTM C 473) – offering better installation m

Helps inhibit mold growth with the highest possible score on mold tests (ASTM D 3273 and ASTM G 21)

Stays Strong Yet Flexes

Like No Other Cement Board

Holds up to the toughest conditions yet bends like no other m

Resists impact and remains dimensionally stable

– extending the life of your project

Installs Fast And Easy

Pre-manufactured panels save you time m

Bends easily – 6" radius at 90˚ m

Reduces jobsite waste – easier, cleaner cut

Offers Best In Class Warranty

Lifetime Limited Warranty: Interior applications

Installation

Installation recommendations for PermaBase Flex are the same as for PermaBase Cement Board with this exception: framing must be spaced a maximum of 8"o.c. (See page 14 for more information.)

Limitations

PermaBase Flex has the same limitations as PermaBase with the following additions: m

For convex surfaces, PermaBase Flex must be applied with the rough surface and tapered edges exposed.

For concave surfaces, PermaBase Flex must be applied with the smooth surface exposed.

PermaBase Flex Cement Board should not be used for fire-rated assemblies.

Maximum framing spacing should not exceed 8"o.c.

Maximum fastener spacing should not exceed 8"o.c. for wall and

6"o.c. for ceiling applications.

SIZES AND PACKAGING

Size: Thickness, Width and Length

1/2" x 36" x 6' (12.7 mm x 914 mm x 1829 mm)

1/2" x 48" x 8' (12.7 mm x 1219 mm x 2438 mm)*

* Special Order

# Of Pcs Per Unit

For installation instructions and accessories, see page 14.

Installation Guide

Installation

Interior

Applications

An ideal substrate for interior applications, such as: m

Shower and tub enclosures m

Garden/whirlpool tubs

General: All framing should comply with local building code requirements and be designed to provide support with a maximum allowable deflection of L/360 under all intended loads. Framing members should be spaced a maximum of 16" o.c.

Countertops m

Backsplashes m

Steamrooms and saunas m

Swimming pool and whirlpool decks and enclosures m

Floor underlayment

• Entryways

• Kitchens

• Bathrooms

• Foyers

• Laundry rooms

Cut or score PermaBase on printed side of panel. Use a straightedge and pencil to mark line. Use utility knife to score/cut the glass mesh.

Snap the board and cut through the now visible glass mesh on the other side. Install tile and tile setting materials in accordance with current

ANSI specifications and Tile Council of North America (TCNA) guidelines.

Control Joints: For interior installations, allow a maximum of 30 lineal feet between control joints. A control joint must be installed but not limited to the following locations: where expansion joints occur in the framing or building (discontinue all cross furring members located behind joint); when boards abut dissimilar materials; where framing material changes; at changes of building shape or structural system; at each story separation. Place control joints at corners of window and door openings, or follow specifications of architect. Control joint cavity shall not be filled with coating or other materials.

Walls And Ceilings

Wall Framing: Edges of

PermaBase parallel to framing should be continuously supported.

Provide additional blocking when necessary to permit proper

PermaBase attachment.

Do not install PermaBase directly over protrusions from stud plane, such as heavy brackets and fastener heads. Studs above a shower floor should either be notched or furred to accommodate the thickness of the waterproof membrane or pan. The surround opening for a tub or precast shower receptor should not be more than 1/4" longer than unit to be installed.

Installation Accessories

For a seamless installation, we recommend PermaBase

Tape and PermaBase ® Screws.

Fasteners

PermaBase corrosion resistant screws or equivalent, 1-1/4" or 1-5/8" long, for use with wood framing. Type

S-12 screws or equivalent, 1-1/4" or

1-5/8" long, for use with 20 gauge or heavier steel framing.

Galvanized roofing nails, 1-1/2" long with hot dipped galvanized coating for use with wood framing. Nails should meet Federal Specification

#FF-N105B/type 2 style 20.

Joint Reinforcement

PermaBase mesh tape must be used on all edges and cuts made to size.

Use 2" wide polymer-coated (alkali resistant) mesh tape for interior applications and 4" wide polymer- coated (alkali resistant) mesh tape for exterior applications.

Bonding Materials

Treat joint and set facing material, preferably with latex-Portland cement mortar or with dry-set (thin-set) mortar. All mortars should comply with ANSI A118.1, A118.4 or

A118.15 standards. Type 1 organic adhesive meeting ANSI A-136.1 may be utilized for interior use only.

Ceiling Framing: The deflection of the complete ceiling assembly due to dead load (including insulation,

PermaBase, bonding material and facing material) should not exceed

L/360. The dead load applied to the ceiling frame should not exceed

10 psf. Ceiling joist or furring channel should not exceed 16" o.c.

(Edges of PermaBase parallel to framing should be continuously supported.) Provide additional blocking when necessary to permit proper PermaBase attachment.

PermaBase Cement Board:

Apply PermaBase with ends and edges closely butted but not forced together. Stagger ends joints in successive courses. Drive fasteners into field of cement board first, working toward ends and edges. Space fasteners maximum 8" o.c. for walls,

6" o.c. for ceilings with perimeter fasteners at least 3/8" and less than

5/8" from ends and edges. Ensure

PermaBase is tight to framing.

Joint Reinforcement: Trowel bonding material to completely fill the tapered recessed board joints and gaps between each panel.

On non-tapered joints apply a 6" wide, approx. 1/16" thick coat of bonding material over entire joint.

For all joints, immediately embed

2" alkali resistant fiberglass mesh tape fully into applied bonding material and allow it to cure. For outside corners, 4" wide mesh tape is recommended. Same bonding material should be applied to corners, control joints, trims and other accessories. Feather bonding material over fasteners to fully conceal.

Tub Installation

1. Wood Studs, 16" o.c.

2. Waterproof Membrane

(Plastic Film)* or

3. Liquid-Applied Waterproofing

Membrane*

4. PermaBase Cement Board

5. Corrosion Resistant Screws, 8" o.c.

6. Fiberglass Mesh Tape

(Alkali-Resistant)

7. Adhesive Or Latex-Portland

Cement Mortar

8. Tile

* Water-resistant membrane installed

according to local building codes.

Installation Guide

Knee Wall Detail Shower Receptor Detail

1. Waterproofing

Membrane

2. PermaBase

Cement Board

3. Corrosion

Resistant Screws,

8" o.c.

4. Framing

Shower Pan Detail

1. Tile

2. Adhesive or

Latex-Portland

Cement Mortar

3. PermaBase

Cement Board

4. Flexible Sealant

(Min. 1/8" gap)

5. Sloped Mortar

Bed

6. Waterproofing

Membrane

1. Tile

2. Adhesive or

Latex-Portland

Cement Mortar

3. PermaBase

Cement Board

4. Flexible Sealant

(Min. 1/8" gap)

5. Shower

Receptor

6. Subfloor

7. Crushed Stone

8. Weep Holes

9. Drain

10. Subfloor

Floor Underlayment

1. I-Joists

2. Plywood

3. Latex-Portland

Cement Mortar

4. PermaBase

Cement Board

5. Fiberglass Mesh Tape

(Alkalin Resistant)

6. Latex-Portland

Cement Mortar

7. Tile

Countertop Installation

1. Plywood

2. Latex-Portland Cement Mortar

3. PermaBase Cement Board

4. Fiberglass Mesh Tape

5. Latex-Portland Cement Mortar

6. Tile

Shower Seat Detail

1. PermaBase

Cement Board

2. Waterproofing

Membrane

3. Latex-Portland

Cement Mortar

4. Min. 1/2" Plywood

5. Supporting Framing

(slope 1/4" per foot

toward drain)

6. Flexible Sealant

(Min. 1/8" gap)

7. Sloped Concrete

8. Membrane

Floors And Counters

Subfloor Or Base: For flooring applications with 16" o.c. floor joists, 5/8" tongue and groove exterior grade plywood or 3/4" tongue and groove exterior grade

OSB may be used. For 19.2" o.c. and 24" o.c. floor joists, 3/4" tongue and groove exterior grade plywood or OSB must be used. Tile size for floors with 24" o.c. floor joists must be 12" x 12" or larger.

The joist and subfloor assembly must meet L/360 as well as the appropriate code tables for live and dead loads.

Underlayment: Using a 1/4" square-notched trowel, apply a setting bed of polymer-modified mortar (or thin-set mortar) to the subfloor or counter base.

Immediately laminate PermaBase to subfloor or base leaving a

1/8" space between boards at all joints and corners. Leave a

1/4" gap along walls. Stagger all joints so that they do not line up with underlying substrate joints.

Fasten PermaBase every 8" o.c. throughout board field and around all edges while setting bed mortar is still workable. Around perimeter of each board, locate fasteners

2" from corners and not less than

3/8" from the edges. Fill all joints solid with bonding material. On non-tapered joints such as butt ends, apply a 6" wide, 1/16" thick coat over the entire joint. For all joints, immediately embed 2" fiberglass mesh tape fully into applied bonding material; ensure that tape is centered over joint. Apply bonding material over fasteners to fully conceal. Remove all excess bonding material and allow to cure.

Limitations

Joints should be treated with alkali resistant fiberglass mesh tape set in a polymer modified mortar.

Conventional paper drywall tape, joint compound and drywall nails or screws should not be used.

Maximum wall framing spacing should not exceed 16" o.c. and must be designed to limit deflection to L/360 under all live and dead loads.

Steel framing must be 20 gauge

(galvanized) or heavier – 16" o.c.

1/4" PermaBase and 1/4"

UltraBacker should not be used on walls or ceilings.

PermaBase is not a water barrier.

Consult local building code for moisture barrier requirements.

Not recommended for use with vinyl flooring.

For exterior and interior finishes applied directly to PermaBase, reinforcing mesh must be embedded in basecoat. Consult finish manufacturer for additional requirements.

PermaBase should not be exposed to temperatures over

220°F (105°C).

PermaBase is not a nailing base for other finishes.

Exterior

Applications

An ideal substrate for exterior applications such as: m

Tile applications m

Stucco applications m

Cement board stucco m

Thin brick m

Adhered stone veneer m

Thin porcelain tile m

Ventilated rainscreen facade m

EIFS m

Soffit panels m

Sheathing panels m

Outdoor kitchens/grills

Installation

Note: Cut or score PermaBase on rough side of panel.

Control Joints: For exterior installations, allow a maximum of 16 lineal feet between control joints. Consult finish manufacturer for other requirements. For exterior tile applications, control joints should be spaced a maximum of every 12'. A control joint must be installed but not limited to the following locations: where expansion joints occur in the framing or building (discontinue all cross furring members located behind joint); when boards abut dissimilar materials; where framing material changes; at changes of building shape or structural system; at each story separation. Place control joints at corners of window and door openings, or follow specifications of architect. Control joint cavity shall not be filled with coating or other materials.

Walls And Ceilings

Wall Framing: Studs should be spaced a maximum of 16" o.c. Edges/ ends of PermaBase parallel to framing should be continuously supported.

Provide additional blocking when necessary to permit proper PermaBase attachment. Do not install PermaBase directly over protrusions from stud plane such as heavy brackets or fastener heads.

Ceiling Framing: The deflection of the complete ceiling assembly due to dead load (including insulation,

PermaBase, bonding material and facing material) should not exceed

L/360. The dead load applied to the ceiling frame should not exceed

10 psf. Ceiling joist or furring channel should not exceed 16" o.c.

(Edges of PermaBase parallel to framing should be continuously supported.) Provide additional blocking when necessary to permit proper PermaBase attachment.

Water Barrier: While

PermaBase is unaffected by moisture, a Water/Air Resistive Barrier

(WRB) must be installed to protect the cavity. The type and specific placement or location of the water barrier will vary based on local building codes and/or manufacturers warranties. Consult the WRB manufacturer’s recommendations for specific installation guidelines.

PermaBase Cement Board:

Apply PermaBase with ends and edges closely butted but not forced together. Stagger end joints in successive courses. Drive fasteners into field of cement board first, working toward ends and edges.

Space fasteners maximum 8" o.c. for walls, 6" o.c. for ceilings with perimeter fasteners at least 3/8" and less than 5/8" from ends and edges.

Joint Reinforcement: Trowel bonding material to completely fill the tapered recessed board joints and gaps between each panel.

On non-tapered joints apply a

6" wide, approximately 1/16" thick coat of bonding material over entire joint. For all joints, immediately embed 4" alkali resistant fiberglass mesh tape fully into applied bonding material and allow to cure. Same bonding material should be applied to corners, control joints, trims or other accessories. Feather bonding material over fasteners to fully conceal.

Decks

Subfloor: Plywood should be securely glued and fastened to floor joists spaced a maximum of

16"o.c. Subfloor should be sloped at a minimum pitch of 1/4" per foot. The floor surface should be true to plane within 1/8" in 10'.

Underlayment: Using a 1/4" square-notched trowel, apply a setting bed of Latex-Portland cement mortar to the subfloor. Immediately laminate UltraBacker to subfloor leaving a 1/8" space between boards at all joints and corners.

Leave a 1/4" gap along walls.

Stagger joints so they do not line up with underlying substrate joints.

Fasten UltraBacker every 8" o.c. throughout board field and around all edges while setting bed mortar is still workable. Around perimeter of each board, locate fasteners 2" from the corners and not less than

3/8" from the edges. Fill all joints solid with bonding material. On non-tapered joints such as butt ends, apply a 6" wide, 1/16" thick coat over the entire joint. For all joints, embed alkali-resistant fiberglass mesh tape fully into applied bonding material; ensure that tape is centered over joint. Apply bonding material over fasteners to fully conceal. Remove all excess bonding material and allow it to cure.

Waterproof Membrane:

Trowel apply waterproof membrane to the entire surface of the cement board, following membrane manufacturer’s installation instructions in detail.

Installation Guide

Cement Board

Stucco Wall System

(CBSS)

For use in residential and low-rise commercial applications, CBSS provides a drainage system to help prevent water from penetrating behind cladding in framed construction. It complies with ASTM D 226, protecting approved sheathings/ structural components and helping to evacuate incidental water.

Benefits Include m

Appropriate for all climates and resists the growth of mold and mildew m

Extremely durable with increased resistance to impact and inclement weather m

Acrylic polymers provide more resistance to fading, cracking and peeling m

Engineered system that allows a faster installation while providing superior quality control (manufactured product that must comply with ASTM product specifications) m

Provides a 15-year exterior warranty – the industry’s best

Limitations m

Follow finish material manufacturer's instructions for proper installation m

Treat joints in PermaBase with mesh tape and base coat m

Thin veneer construction can reveal planar irregularities in framing m

Minor cracking at joints may become visible in finished exterior surface m

Exterior finishes applied directly to PermaBase: Reinforcing mesh must be embedded in basecoat (consult exterior finish manufacturer for additional installation requirements) m

Conventional Portland Cement plaster systems: Self-furring metal lath must be used over

PermaBase and fastened to studs m

Code-Approved Water/Air

Resistive Barrier (WRB) must first be installed to protect the cavity (type and placement will vary per local building codes and/or manufacturer’s specifications, installation guidelines and warranties)

Cement Board Stucco

The following manufacturers have Evaluation

Service Reports that list PermaBase Cement Board as a component:

STO: ESR-2536

Parex: ESR-2045

Senergy: ESR-2357, ESR-2358, ESR-2359, ESR-2022

1. Insulation

2. e

XP Sheathing

3. Water/Air Resistive Barrier

4. PermaBase Cement Board

5. Reinforcing Mesh

6. Base Coat

7. Finish Coat

Thin Brick Exterior Metal Stud Assembly

Cement Board

Masonry Veneer Wall

System (CBMV)

For use in residential and low-rise commercial applications, CBMV offers a complete, engineered solution for installation of adhered veneers. It provides the ability to incorporate an effective watermanagement system for a variety of building exteriors with manufactured or natural stone and thin brick veneers.

Benefits Include m

Engineered system that allows a faster installation while providing superior quality control (manufactured product that must comply with ASTM product specifications) m

Increased performance by utilizing polymer modified adhesive mortars

(designed for hanging materials) rather than type S&N mortars

(developed for stacking materials) m

Extremely durable with increased resistance to impact and inclement weather m

Approved for use in ASTM C 1780, and cement board is cited as an approved substrate for this system by the Masonry Veneer

Manufacturers Association

(MVMA): Installation Guide and

Detailing Options for Compliance with ASTM C 1780 m

Easily allows for the inclusion of continuous installation into the assembly m

Appropriate for all climates and resists the growth of mold and mildew m

Speed up your schedule – faster, easier and cleaner than traditional metal lath/scratch coat method m

IBC/IRC Compliant. Meets

ASTM C 1325.

PermaBase is approved as a substrate for direct applied finishes, tile, stone and thin brick in exterior applications, as outlined in ICC-ES Evaluation

Report ESR-1510.

PermaBase is suitable for use in combustible and noncombustible construction under the IBC and IRC, as outlined in ICC-ES

Evaluation Report ESR-1510.

Limitations m

Sheathing selection and installation varies according to type of wall construction m

Code-approved Water/Air

Resistive Barrier (WRB) must be installed to protect the cavity

(type and placement will vary per local building codes and/or manufacturer’s specifications, installation guidelines and warranties)

Manufactured Stone Exterior Wood Stud Assembly

1. e XP Sheathing

2. Plywood Or Other Structural

Sheathing

3. Water/Air Resistive Barrier

4. PermaBase Cement Board

5. 4" Alkali-Resistant Mesh Tape

6. Liquid Water/Air Resistive

Barrier (WRB)

Alternate Location

7. Polymer Modified Adhesive

Mortar

8. Thin Brick

9. Manufactured Stone

Installation Guide

Continuous Insulation – Z-Furring Installation

Continuous Insulation

For use in residential and low-rise commercial applications, Continuous

Insulation offers a complete, engineered solution for required structural performance. Including

PermaBase as a component in this system reinforces the building and provides the ability to incorporate an effective water-management system.

Benefits Include m

Engineered system that allows a faster installation while providing superior quality control

(manufactured product that must comply with ASTM product specifications) m

Helps mitigate the loss of heat/ air conditioning by insulating the studs (reduces thermal bridging) m

Helps eliminate air and moisture leakage m

Appropriate for all climates, resists the growth of mold and mildew and offers fire protection m

Provides added dimensional stability m

Helps prevent the Water/Air

Resistive Barrier (WRB) from being compromised as assembly components shift m

Provides a 15-year exterior warranty – the industry’s best

Limitations m

Sheathing selection and installation varies according to type of wall construction m

Code-approved Water/Air

Resistive Barrier (WRB) must first be installed (type and placement will vary per local building codes and/or manufacturer’s specifications, installation guidelines and warranties)

Continuous Insulation – Wood Batten Installation

This section of the PermaBase Construction Guide provides information on how to utilize PermaBase within both a CBMV System and a

Continuous Insulation System. While some typical examples are shown

(right) for reference purposes, the specifications and details on how to design and construct individual systems should be obtained from the adhering material or veneer manufacturer of the materials that are being used to complete the system.

For more information go to: permabase.com/exteriors

1. Insulation

2. e

XP Sheathing

3. Sheathing

4. Water/Air Resistive Barrier

5. Rigid Insulation

6. Wood Batten

7. PermaBase Cement Board

8. Reinforcing Mesh

9. Mortar

10. Thin Brick

11. Manufactured Stone

Technical Data

Fire-Rated Wall Assemblies

PermaBase Cement Board has been tested and/or approved for use in a variety of fire-rated wall systems.

1-Hour Rating – The 1-hour wall assembly consists of 3-5/8" steel studs, 16" o.c., one layer of 7/16” PermaBase PLUS or 1/2"

PermaBase attached horizontally or vertically with 1-1/4" long cement board screws 8" o.c. in the field and perimeter on one side and one layer of 5/8" Fire-Shield ® gypsum board attached vertically on opposite side with joints staggered to those of opposite side, with 1-1/4" long drywall screws 8" o.c. in the field and perimeter with 3" thick mineral fiber insulation batts in the stud cavities. UL V452.

1-Hour Rating

1. PermaBase Cement Board

2. Steel studs

3. 3" mineral fiber insulation

4. 5/8" Fire-Shield

Gypsum Board

2-Hour Fire Rating – The 2-hour wall assembly consists of 3-5/8" steel studs, 16" o.c. on one side, base layer of 1/2" Fire-Shield C or 5/8”

Fire-Shield gypsum board attached vertically with 1" drywall screws

24" o.c. in the field and perimeter and face layer of 7/16” PermaBase

PLUS or 1/2" PermaBase attached vertically with 1-5/8" cement board screws, 8" o.c. in the field and perimeter. Two layers of 1/2"

Fire-Shield C or 5/8” Fire-Shield gypsum board applied vertically to the opposite side, base layer attached with 1" drywall screws 24" o.c. in the field and perimeter and face layer attached with 1-5/8" drywall screws 12" o.c. in the field and perimeter, with 3" thick mineral fiber insulation batts in the stud cavities. All joints staggered between face and base layer. UL V452.

2-Hour Rating

1. PermaBase Cement Board

2. Steel studs

3. 3" mineral fiber insulation

4. 1/2" Fire-Shield C

Gypsum Board

Technical Data

UL Listed PermaBase

Cement Board Partitions – Steel Framing

1-hour Fire Rating

V452 UL Design

2-hour Fire Rating

V452 UL Design

7/16" PermaBase PLUS or 1/2" PermaBase applied vertically or horizontally to one side of 3-5/8" steel studs 16" o.c. 5/8" Fire-Shield Gypsum Board applied vertically to opposite side. 3" mineral wool insulation in stud cavities.

1-hour Fire Rating

V438 UL Design

7/16" PermaBase PLUS or 1/2" PermaBase applied vertically over 1/2" Fire-Shield C or 5/8" Fire-Shield Gypsum Board, applied vertically to one side of 3-5/8" steel studs

16" o.c. 2 layers 1/2" Fire-Shield C or /8" Fire-Shield Gypsum Board applied vertically to opposite side. 3" mineral wool insulation in stud cavities.

2-hour Fire Rating

V438 UL Design

7/16" PermaBase PLUS or 1/2" PermaBase applied vertically or horizontally over

5/8" Fire-Shield Gypsum Board applied vertically to each side of 3-5/8" steel studs

16" o.c. PermaBase secured to studs with cement board screws of adequate length to penetrate studs 3/8" spaced 8" o.c.

1-hour Fire Rating

V452 UL Design

7/16" PermaBase PLUS or 1/2" PermaBase applied vertically or horizontally over two layers 5/8" Fire-Shield Gypsum Board applied vertically to each side of 2-1/2" steel studs 16" o.c. PermaBase secured to studs with cement board screws of adequate length to penetrate studs 3/8" spaced 8" o.c.

2-hour Fire Rating

V452 UL Design

7/16" PermaBase PLUS or 1/2" PermaBase applied vertically or horizontally to one side of double row of 3-5/8" steel studs 16" o.c. 5/8" Fire-Shield Gypsum Board applied vertically to opposite side. 3" mineral wool insulation in stud cavities.

1-hour Fire Rating

U425 UL Design

7/16" PermaBase PLUS or 1/2" PermaBase applied vertically over 1/2" Fire-Shield C or 5/8" Fire-Shield Gypsum Board, applied vertically to one side of double row of 3-5/8" steel studs 16" o.c. 2 layers 1/2" Fire-Shield C or 5/8" Fire-Shield Gypsum Board applied vertically to opposite side. 3" mineral wool insulation in stud cavities.

2-hour Fire Rating

U425 UL Design

7/16" PermaBase PLUS or 1/2" PermaBase applied vertically or horizontally over

5/8" Fire-Shield Gypsum Board applied vertically to each side of 3-1/2", 20 gauge steel studs 16" o.c. PermaBase secured to studs with cement board screws of adequate length to penetrate studs 3/8" spaced 8" o.c.

7/16" PermaBase PLUS or 1/2" PermaBase applied vertically or horizontally over two layers 5/8" Fire-Shield Gypsum Board applied vertically to each side of 3-1/2",

20 gauge steel studs 16" o.c. PermaBase secured to studs with cement board screws of adequate length to penetrate studs 3/8" spaced 8" o.c.

3-hour Fire Rating

V438 UL Design

7/16" PermaBase PLUS or 1/2" PermaBase applied vertically or horizontally over three layers 5/8" Fire-Shield Gypsum Board applied vertically to each side of 2-1/2" steel studs 16" o.c. PermaBase secured to studs with cement board screws of adequate length to penetrate studs 3/8" spaced 8" o.c.

UL Listed PermaBase

Cement Board Partitions – Wood Framing

1-hour Fire Rating

U392 UL Design

2-hour Fire Rating

U301 UL Design

7/16" PermaBase PLUS or 1/2" PermaBase applied vertically or horizontally to one side of 2x4 wood studs 16" o.c. with 1-1/4" cement board screws spaced 8" o.c. Ceramic tile installed over PermaBase. 5/8" Fire-Shield Gypsum Board applied vertically or horizontally to opposite side with 6d nails spaced 7" o.c. 3-1/2" mineral wool insulation in stud cavities.

1-hour Fire Rating

U392 UL Design

7/16" PermaBase PLUS or 1/2" PermaBase applied vertically over two layers 5/8"

Fire-Shield Gypsum Board, applied either horizontally or vertically to each side of

2x4 wood studs 16" o.c. PermaBase secured to studs with cement board screws of adequate length to penetrate studs 3/4" spaced 8" o.c.

2-hour Fire Rating

U371a UL Design

7/16" PermaBase PLUS or 1/2" PermaBase applied vertically or horizontally to each side of 2x4 wood studs 16" o.c. with 1-1/4" cement board screws spaced 8" o.c.

Ceramic tile installed over PermaBase. 3-1/2" mineral wool insulation in stud cavities.

7/16" PermaBase PLUS or 1/2" PermaBase applied vertically over two layers 5/8"

Gypsum Board, applied either horizontally or vertically to the interior side of 2x4 wood studs 16" o.c., or over 5/8" Gypsum Sheathing applied to exterior side with portland cement stucco, brick veneer, thin brick finishes. PermaBase secured to studs with cement board screws of adequate length to penetrate studs 3/4" spaced 8" o.c.

Notes

__________________________________________________________________________________

LIMITED WARRANTY AND REMEDIES CUSTOMER SERVICE SALES AREAS

Products manufactured and sold by National

Gypsum Company are warranted by National

Gypsum Company to its customers to be free from defects in materials and workmanship at the time of shipment. THIS EXPRESS

WARRANTY IS THE ONLY WARRANTY

APPLICABLE TO SUCH PRODUCTS, AND IS

IN LIEU OF AND EXCLUDES ALL OTHER

EXPRESS ORAL OR WRITTEN WARRANTIES

AND ALL IMPLIED WARRANTIES, INCLUDING

BUT NOT LIMITED TO THE IMPLIED

WARRANTIES OF MERCHANTABILITY AND

FITNESS FOR A PARTICULAR PURPOSE.

National Gypsum Company will not be liable for any incidental, indirect or consequential losses, damages or expenses. The customer’s exclusive remedy for any type of claim or action for defective products will be limited to the replacement of the products (in the form originally shipped) or, at National

Gypsum’s option, to a payment or credit not greater than the original purchase price of the products.

National Gypsum Company will not be liable for products claimed to be defective where the defect resulted from causes not within National Gypsum’s control, or which arose or occurred after shipment, including but not limited to accidents, misuse, mishandling, improper installation, contamination or adulteration by other materials or goods, or abnormal conditions of temperature, moisture, dirt or corrosive matter.

Any claim that products sold by National

Gypsum Company were defective or otherwise did not conform to the contract of sale is waived unless the customer submits it in writing to National Gypsum within thirty (30) days from the date the customer discovered or should have discovered the defect or nonconformance. No legal action or proceeding complaining of goods sold by National

Gypsum may be brought by the customer more than one year after the date the customer discovered or should have discovered the defect or problem of which it complains.

Mold And Mildew Resistance

PermaBase was designed to provide extra protection against mold and mildew. When tested by an independent laboratory,

PermaBase received the highest possible ratings on ASTM G 21 and D 3273. The use of

PermaBase in actual installations may not produce the same results as were achieved in controlled laboratory conditions. No material can be considered “mold-proof,” nor is it certain that any material will resist mold or mildew indefinitely. When used in conjunction with good design, handling and construction practices, PermaBase can provide increased mold resistance. As with any building material, avoiding water exposure during handling, storage and installation, and after installation is complete, is the best way to avoid the formation of mold or mildew.

Atlantic Area

Phone: (800) 237-9167

Fax: (877) 252-0430 m

Central Area

Phone: (800) 252-1065

Fax: (866) 232-0440 m

Gulf Area

Phone: (800) 343-4893

Fax: (866) 482-8940 m

Midwest Area

Phone: (800) 323-1447

Fax: (866) 692-8590 m

Northeast Area

Phone: (800) 253-3161

Fax: (866) 632-1480 m

Southeast Area

Phone: (800) 548-9394

Fax: (866) 732-1990 m

Southwest Area

Phone: (800) 548-9396

Fax: (866) 792-7520 m

Western Area

Phone: (800) 824-4227

Fax: (800) 438-6266

National Accounts

Phone: (800) 440-1230

Fax: (866) 622-3590

Manufactured Housing

Phone: (800) 455-3185

Fax: (800) 639-1714

Corporate Headquarters

National Gypsum Company

2001 Rexford Road

Charlotte, NC 28211

Phone: (704) 365-7300

Web: nationalgypsum.com

Technical Information

Phone: (800) NATIONAL

(800) 628-4662

Fax: (800) FAX-NGC1

(800) 329-6421 permabase.info

110831 Rev. 6/15

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Key features

Moisture resistant
Lightweight
Strong
Easy to install
GREENGUARD Certified
EdgeTech Technology
Various thicknesses and sizes
Various applications
Industry's best warranties

Frequently asked questions

PermaBase offers four types of cement boards: PermaBase, PermaBase PLUS, UltraBacker, and Flex.

PermaBase cement boards offer several advantages, including moisture resistance, durability, ease of installation, GREENGUARD certification for low-chemical emissions, and industry-leading warranties.

PermaBase cement boards can be used for a variety of interior and exterior applications, including shower and tub enclosures, countertops, flooring, walls, ceilings, decks, and more.

You can find more information about PermaBase cement boards on the National Gypsum website: permabase.com/exteriors

PermaBase cement boards have limitations, such as not being a water barrier, not being recommended for use with vinyl flooring, and not being a nailing base for other finishes.