Board-Stock Insulation

Board-Stock Insulation
Roof Coatings
100% Acrylic Fluid-Applied Elastomeric Coating System
Roof Mate Over Board-Stock Insulation
A. Rough Carpentry: Section 06100
B. Flashing & Sheet Metal: Section 07620
C. Roof Accessories: Section 07800
D. Prefabricated Expansion Joints: Section 07860
E. Painting: Section 09900
A. Qualifications of Contractor
1. The Contractor shall be approved by the Coatings Manufacturer, and shall have a minimum of three (3)
years experience in the application of acrylic elastomeric roof coatings.
2. The Contractor shall provide a list of project references, including contact names and telephone numbers.
B. Qualifications of Manufacturer
1. Manufacturer of the fluid-applied elastomeric acrylic coating system shall have a proven 20-year track
record of successful installations using 100% elastomeric acrylic technology in the roofing industry.
2. Approved products shall be manufactured exclusively from Rohm and Haas 100% acrylic resins.
3. Other Manufacturer’s products shall be accepted for use on this project only after submittal of product data
files to the Architect or Owner supporting quality, equality and full compliance with specifications herein.
The Architect or Owner reserves the right to reject the substitution proposals should it be determined the
submittals do not provide all functions required for application.
C. Testing & Labeling
1. The elastomeric acrylic coating system must be Factory Mutual, U.L. and ICBO tested and classified as a
Class A fluid-applied system for maintenance and repair of existing Class A, B or C roofing construction,
and be subject to UL. follow-up service. The acrylic coating shall also be approved and listed by Factory
Mutual as an acceptable recoating system over existing roof substrates, as well as ICBO and Dade County.
All containers must bear the FM and U.L. labels and be subject to U.L. follow-up service.
2. The Manufacturer shall also provide recognized, third party independent test results confirming the coating systems conformance to ASTM D6083.
3. Individual container labels must include the following information or they will be rejected at the jobsite:
Manufacturer’s name, product name, type and class of material, FM and U.L. stickers with classification issue
number, ICBO report number, batch or lot number, mixing and application instructions and precautions.
A. Submit Manufacturer’s literature, certificates and samples in a single package to the Architect or Owner in
accordance with requirements specified in General Conditions and Division 1, General Requirements.
B. Manufacturer’s Literature: Literature on the protective coating, as well as related primers, sealant, reinforcement, etc., shall be submitted for review before work is started. Literature shall show material specifications,
physical properties (including ASTM test methods utilized), Manufacturer’s estimated application rate for
required dry mil thickness per warranty requirements, current application instructions and MSDS.
C. Applicator’s Qualifications: Submit a copy of Approved Applicator letter and/or certificate as issued by the
Manufacturer of the elastomeric acrylic coating system.
D. Warranty: Submit a copy of Coating Manufacturer’s warranty to meet project specifications.
A. Delivery of Materials: Materials shall be delivered to the jobsite in Manufacturer’s original, sealed containers
with labels legible and intact.
B. Storage of Materials: Materials shall be stored in an area specifically designated for that purpose, in accordance with Manufacturer’s recommendations, where temperatures will not be less than 50°F (10°C) or more
than 100°F (38°C).
C. Material Handling: Materials shall be handled, stored and installed per Manufacturer’s instructions and all
applicable safety regulatory agencies.
D. Damaged Materials: Contaminated, damaged or unsealed materials, or materials not conforming to the specified requirements shall not be used in the installation. Rejected containers shall be immediately removed from
the jobsite and replaced at no additional cost to the Owner.
May, 2003
(Supercedes June, 2002)
A. Install all materials in strict accordance with Manufacturer’s published safety, weather and temperature precautions.
B. Do not apply elastomeric acrylic coating system components when the ambient and/or surface temperature(s) is below
50°F (10°C) or above 110°F (43°C), when the dew point is within 5°F (3°C) of the surface temperature or when there
is a possibility of temperatures falling below 32°F (0°C) within a 24 hour period. Do not apply if any surface moisture
is present, or if the wind velocity exceeds 10 mph (16 kph) without taking appropriate precautions.
C. Take all measures necessary to protect unrelated work and other adjacent surfaces from coating overspray or spillage.
A. The overall weather conditions, including surface temperature, surface moisture, ambient temperature, relative humidity and wind velocity shall be recorded by the Contractor, at designated time intervals, on the Daily Quality Control
Report form if so requested by the Architect or Owner.
B. Verification of Protective Coating Thickness: During application of the elastomeric coating, the wet film thickness
shall be measured and recorded daily, along with the quantity and batch numbers of the material applied, on the Daily
Quality Control form.
A seamless, fluid-applied acrylic membrane system designed for application over board-stock insulation board.
Approved system shall be UNITED COATINGS’ ROOF MATE Board-Stock Roof Coating System consisting of
UNIBASE Fabric Adhesive and Basecoat, ROOF MATE 100% Acrylic Elastomer Topcoat, Board-Stock Insulation,
Insta-Stik or WALL-BOND 70/90, ROOF MATE Butter Grade and/or SEAMSEAL, ROOF MATE Mesh,
A. Reinforcement Tape: ROOF MATE Mesh, stichbonded polyester fabric, as supplied by Coating Manufacturer for
use in reinforcing individual seams in the insulation board, vertical/horizontal interfaces and other detail areas.
B. Reinforcement Mesh: ROOF MATE FABRIC, stichbonded polyester fabric, as supplied by Coating Manufacturer
for use in full fabric reinforcement of the insulation board surface.
C. Fluid-Applied Reinforcement Mastic: SEAMSEAL, single package polyurethane or ROOF MATE Butter Grade,
single package acrylic, as supplied by Coating Manufacturer for use in reinforcing detail areas.
D. Board-Stock Insulation: Isocyanurate or polystyrene board-stock insulation panels, as supplied or approved by
Coating Manufacturer to provide additional thermal insulation.
E. Insulation Fasteners or Adhesive: Fastener screws with washers or Insta-Stik, WALL-BOND 70 or WALL-BOND 90
(depending on substrate), as supplied by Coating Manufacturer to securely attach insulation panels to the roof.
F. Fabric Adhesive and Basecoat: UNIBASE, penetrating acrylic elastomer, as supplied by Coating Manufacturer for use
in embedding fabric and for basecoating of board-stock insulation.
G. Fluid-Applied Elastomeric Topcoat: UNITED COATINGS’ ROOF MATE coating, as supplied by Coating
Manufacturer to provide a seamless, weather-resistant topcoat over the UNI-BASE basecoat. Can also be used as its
own basecoat for embedding fabric.
H. Self-Cleaning Topcoat (optional): ACRYSHEEN, clear, semi-gloss 100% acrylic sealer, as supplied by Coatings
Manufacturer for increased dirt release characteristics.
Fluid-applied, 100% pure acrylic elastomeric topcoat in the specified finish color, shall be internally plasticized to provide a permanently flexible, weather-resistant topcoat. It shall possess a Class “A” fire rating, as tested and certified by
UL 790, Factory Mutual and ICBO. Coating shall meet or exceed all properties specified in ASTM D6083, Table 1,
“Liquid Property Requirements”, and Table 2, “Film Physical Property Requirements for Acrylic Roof Coatings”, as
follows, and shall be verified by a certified independent testing agency.
85 to 141 KU (ASTM D562)
12,000 - 85,000 cps (ASTM D2196)
Fungi Resistance
Zero Rating (ASTM G21)
Maximum 50 perms (17.2 x 10 - 10
kg/s·m2·Pa) (ASTM D1653)
Maximum 20% (mass) (ASTM D471)
Volume Solids
>50% (ASTM D2697)
Weight Solids
>60% (ASTM D1644)
Water Swelling
Initial % Elongation
Initial Tensile Strength
(minimum stress)
Minimum 100% @ 73°F (23°C)
(ASTM D2370)
Accelerated Weathering No cracking/checking(ASTM D4798)
(1000 hours)
Minimum 200 psi (1.38 MPa) @ 73°F
(23°C) (ASTM D2370)
Final % Elongation
(break) after 1000 hours
accelerated weathering
Minimum 100% @ 73°F (23°C)
(ASTM D2370)
Minimum 2.0 pli (350 N/m) (wet)
4.0 pli (700 N/m) (dry)
(ASTM C794 or D903)
Tear Resistance
Low Temp Flexibility
after 1000 hours
>60 lbf/in. (21 kN/m) (ASTM D624)
Minimum pass ½ inch mandrel
@ -15°F (-18°C) (ASTM D522)
Acrylic coatings extended with styrene, vinyl or other ingredients are not allowed. Materials such as cementitious coatings, ceramic-filled coatings, asphalt modified materials, urethanes, silicones, kraton based rubbers, Hypalons and
butyls are not considered acceptable substitutes for materials specified herein.
Inspect all roof surfaces to receive work specified under this section to ensure that the following conditions exist:
A. Roof surfaces shall be clean, dry, structurally sound, stable and well secured. The roof surface shall be free of excessive ponding water. A roof surface that has water standing 48 hours after a rain shall be considered unacceptable. All
water shall be allowed positive drainage from the roof.
B. Inspect condition of flashing details adjacent to protrusions, penetrations, roof mounted equipment, curbs, walls, parapets, drains and roof edge to ensure that details are acceptable and will maintain a weather-tight installation after being
properly detailed and coated.
C. Determine moisture content of existing substrate, insulation and deck. A moisture content of 15% or greater indicates
a potential problem and work shall not proceed until the cause is verified and the condition is corrected.
A. All loose gravel, dirt and debris shall be removed by vacuuming and/or power sweeping. On heavily graveled areas,
removal by spudding, scraping or scarifying may be necessary to smooth the surface prior to application of the boardstock insulation. Care shall be taken to preserve the integrity of the existing asphalt membrane whenever possible.
B. Any unsound areas in the roof deck or insulation, including blisters, delamination, deterioration, excessive moisture
content, etc., shall be repaired or replaced. All blisters, delaminations, wrinkles and loose areas shall either be cut
away and removed or cut open and nailed flat to the deck.
C. Either mechanically fasten or adhere the board-stock insulation to the roof deck, depending on the substrate. If mechanically fastening the insulation board, utilize fastener screws (with washer flanges) of an appropriate length so as to
extend into the roof substructure. Space fasteners as recommended by insulation board manufacturer according to the
size of the panel so that it is securely fastened to the deck. If using adhesive to secure the insulation to the substrate, utilize Wall-Bond 70, Wall-Bond 90, Insta-Stik adhesive or equivalent, depending on the substrate, to bond the panels.
D. Roof deck areas shall have positive slope to drain. Taper the insulation panels around drains and scuppers, and add
crickets or additional insulation as necessary to facilitate proper drainage of water from the roof.
E. Reinforce areas around drains, scuppers, flashings and protrusions by applying a heavy coat of Seamseal or ROOF
MATE Butter Grade, using a brush or roller, to a thickness of 60 to 80 mils (1,524 to 2,032 microns). ROOF MATE
Butter Grade must be applied in a minimum of 2 coats.
F. All seams between sheets of insulation board must be reinforced using 4" (10 cm) ROOF MATE Mesh embedded
into a strip-coat of ROOF MATE Basecoat, centered over the seam. While the material is still wet, embed a strip of
4" (10 cm) ROOF MATE Mesh, working it in with a brush or roller to eliminate air pockets, wrinkles and gaps.
Apply additional material as necessary to totally encapsulate the reinforcing fabric.
G. Severely deteriorated flashings shall be removed and either replaced or repaired.
A. All roof preparation materials shall be allowed to fully dry prior to full roof surface application of the 100% acrylic
elastomeric coating system.
B. Immediately prior to application of the acrylic coating system, all dust, dirt and other contaminants shall be blown off
the roof surfaces to be coated using high pressure compressed air.
C. At drip edges, refasten all metal flanges and reinforce the area with Seamseal as previously described.
D. Reinforce entire surface of the board-stock insulation panels by embedding 40" (102 cm) wide rolls of Roof Mate
Fabric into Unibase . This is accomplished by applying Unibase to a small section of roof where the fabric reinforcement will begin. Embed and encapsulate the end of the ROOF MATE Fabric roll so that it is anchored at that point.
Roll out a 4’ to 10’ (1.2 to 2.5 m) section of fabric and either spray apply or pour Unibase evenly over the top side at
the rate of 2 to 3 gallons per 100 sq. ft. (.8 to 1.2 l/m²), allowing the fabric to conform to the surface contours. Work
the Unibase evenly throughout the fabric using a roller or broom so that it is totally encapsulated, eliminating any air
pockets, wrinkles or gaps. Coverage rate will depend on profile and texture of the substrate. Take extra care to ensure
that edges of the fabric are well saturated and adhered. Overlap consecutive passes of ROOF MATE Fabric a minimum of 2" (5 cm) on each side. ROOF MATE Basecoat can also be use for encapsulating the reinforcement fabric,
following the procedure described under Section 3.02 F above. Allow the Unibase or ROOF MATE Basecoat to dry
thoroughly prior to applying the acrylic topcoat to the roof.
E. The entire roof substrate shall receive the ROOF MATE 100% acrylic elastomer coating system applied as follows:
Include the following paragraphs only if specifying a 5-Year Standard Warranty
1. Apply ROOF MATE White (or other specified color) at a minimum rate of 1.5 gallons per 100 sq. ft. (.6 l/m²). Use
multiple pass or cross-hatch application technique to ensure a uniform coverage rate, free from voids or pinholes.
2. The total – Unibase/topcoat – minimum dry film thickness required at any location is 25 mils (635 microns).
Include the following paragraphs only if specifying a 10-Year Standard or 5-Year System Warranty
1. Apply ROOF MATE Gray basecoat at a minimum rate of 1 gallon per 100 sq. ft. (.4 l/m²).
2. After allowing the basecoat to dry, apply ROOF MATE White (or other specified color) at a minimum rate of 1.5 gallons per 100 sq. ft. (.6 l/m²). Use a medium-nap roller or airless spray to apply the elastomeric coating. Apply consecutive
coats of ROOF MATE in a perpendicular direction to the previous coat.
3. The total – Unibase/basecoat/topcoat – minimum dry film thickness required at any location is 33 mils (838
Include the following paragraphs if specifying a 15-Year Standard or 10-Year System Warranty
1. Apply ROOF MATE Gray basecoat at a minimum rate of 1.75 gallons per 100 sq. ft.
2. After allowing the basecoat to dry, apply ROOF MATE White (or other specified color) at a minimum rate of 1.75 gallons per 100 sq. ft. Use a medium-nap roller or airless spray to apply the elastomeric coating. Apply consecutive coats
of ROOF MATE in a perpendicular direction to the previous coat.
3. The total – Unibase/basecoat/topcoat – minimum dry film thickness required at any location is 40 mils (1,016
Include the following paragraphs only if specifying a 15-Year System Warranty
1. Apply a coat of ROOF MATE Gray basecoat at a minimum rate of 1.5 gallons per 100 sq. ft.
2. After allowing the basecoat to dry, apply a coat of ROOF MATE Light Gray midcoat at a minimum rate of 1.5 gallons per 100 sq. ft.
3. After allowing the midcoat to dry, apply ROOF MATE White (or other specified color) at a minimum rate of 1.5 gallons
per 100 sq. ft. Use a medium-nap roller or airless spray to apply the elastomeric coating. Apply consecutive coats of
ROOF MATE in a perpendicular direction to the previous coat.
4. The total – Unibase/basecoat/midcoat/topcoat – minimum dry film thickness required at any location is 48 mils
(1,219 microns).
F. The ROOF MATE topcoat shall extend up and over all roof substrates on vent pipes, parapets and other protrusions
to terminate a minimum of 3" (8 cm) above the substrate, creating a self-terminating flashing, and to provide an aesthetically pleasing appearance.
G. As an option on roofs located in industrial areas and/or subjected to high levels of pollutants, dirt, dust or other contamination, apply a coat of UNITED COATINGS’ Acrysheen at the rate of 200 to 250 sq. ft. per gallon (4.8 to 6.1 m²/l).
Acrysheen imparts a slick, semi-gloss finish that aids in maintaining a clean surface.
H. To provide a non-skid walk path on roofs subject to heavy foot traffic, demarcate walkways by applying an additional
coat of ROOF MATE, using a medium-nap roller or airless spray, at the rate of 1 gallon per 100 sq. ft. (.4 l/m²) along the
designated traffic area. While the coating is still wet, broadcast 3M #11 roofing granules to the point of refusal. UNITED
COATINGS’ Rhino Top, a non-skid colored acrylic topping, can also be used to demarcate walkways, as can WallBond or walk pads such as “Yellow Spaghetti”.
A. Maintain work and work areas in a clean, safe working order at all times during reroofing installation. Remove excess
materials, trash and debris from the jobsite daily.
B. At the completion of the project, clean area of any spills and containers, and clean up all roofing debris, leaving jobsite
in a clean and orderly condition.
A. Upon completion of the roof coating system, the Coating Manufacturer’s Representative, Owner’s Representative,
Architect and Applicator shall make a final inspection to determine the dry film thickness of the fluid-applied acrylic
membrane and to verify that the system meets the Manufacturer’s requirements for warranty. The Contractor shall notify all interested parties in advance of said inspection.
B. As a condition of the project’s completion and acceptance, deliver to the Owner a copy of the fully executed, specified
warranty from the Coating Manufacturer, following individual warranty guidelines.
19011 E. Cataldo Ave. • Greenacres, WA 99016
(509) 926-7143 • Fax: (509) 928-1116
(800) 541-4383 •
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