Roof Mate Base Coat


Roof Mate Base Coat is a water-based acrylic elastomer coating utilizing the latest advances in acrylic technology. It combines acrylic emulsion polymers, powerful biocides and non-migrating fire retardants for superior physical properties, adhesion, durability, weatherproofing, mildew resistance and fire retardancy. The fire retardant chemicals are permanently locked into the cured coating and will not leach out upon extended weathering. Roof Mate Base Coat is a “breathing” coating, allowing moisture vapor to pass through the film while remaining resistant to mass water penetration.

Sizes Available:

1 gallon (3.8 liter) bucket
5 gallon (19 liter) pail
54 gallon (204 liter) drum
250 gallon drum

Uses and Advantages

Roof Mate Base Coat was especially developed for use in embedding reinforcement fabric at detail areas. It is also used for achieving film build prior to topcoating with Roof Mate, Roof Mate QS, Roof Mate HT or RoofShield Coating. It is formulated to achieve superior adhesion over metal, conventional built-up, modified bitumen, single-ply, concrete, board-stock and sprayed-in-place polyurethane foam, and composite shingle roof substrates. Roof Mate Base Coat forms an elastomeric seal, uniformly covering the textured profile of these substrates.

Roof Mate Base Coat is available in standard gray color, which provides for a high visual contrast with the application of the subsequent Roof Mate Coat. Roof Mate Coat is available in White, Solar Gray, Light Tan and Tan.


Solids by Weight 67% (±2) [ASTM D2369]
Solids by Volume 51% (±2) [ASTM D5201]
Tensile Strength 182 psi (±20) (1.83 MPa)
[ASTM D2370/D6083]
Enlongation 135% (±20)
[ASTM D2370/D6083]
Hardness 60 to 70 Shore A
[ASTM D2240]
Permeance 2.7 US perms at 22 dry mils
(155 ng/(Pa.s.m²) @ 560 microns)
[ASTM E96]
Dry Time to Walk On 4 hours at 75°F (24°C), 50% R.H.
Gray at 16 wet mils (406 microns)
*Required times will increase at higher humidities
Temperature Limits
for Normal Service
Low Temperature
Passes 180° flex over ½” (1.2 cm)
mandrel @ -5°F (-21°C) [Federal Test
Method No.141a-6221]
Colors White, Lt Tan, Lt Gray, Tan, Gray


All documents are U.S. English unless otherwise noted

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