Elastomeric acrylic rubber which forms and tough, flexible membrane, designed to protect urethane foam roofing. Specially formulated to dry fast and have a high adhesion. Plexmate is outstanding in exterior durability, color retention, and ultraviolet stability. This acrylic coating remains extremely flexible with high tensile strength and elongation. After curing, it resists most forms of ponding water, mechanical damage, and impact. This product has been used to coat metal, asphalt, rubber, urethane foam, and wood surfaces. Plexmate is currently used in various applications, including urethane foam roof coatings for over thirty years.



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PlexMate is an elastomeric acrylic latex rubber, which forms a tough, flexible membrane and is designed for the protection of urethane and EPS (Styrofoam), concrete and wood substrates. It is specially formulated to dry faster and have higher adhesion. PlexMate has been formulated to have outstanding wet film integrity with better resistance to re-emulsification and it develops maximum adhesion more rapidly. PlexMate has outstanding exterior durability, color retention, and ultraviolet stability. It provides a surface that is highly resistant to dirt pickup, yet is extremely flexible and has high tensile strength and elongation. No costly solvents are required in reducing, thinning or clean up.

The thixotropic nature of PlexMate provides the ability to apply the necessary thickness with ease, even on rough or vertical surfaces, without pin-holing or sagging. PlexMate provides more economical coverage. The higher solids provide greater coverage per square gallon, which means faster application rates. PlexMate has less shrinkage of the film, resulting in better film integrity.

PlexMate, after curing, has exceptional resistance to most forms of ponding water. A 30 mils thick film of PlexMate immersed in near boiling water (200°F) for 14 days showed a negligible change in physical properties. PlexMate demonstrates excellent flexibility over a range of extreme temperatures, even at subzero temperatures. PlexMate has a balance of elongation and tensile strength properties, which provide resistance to impact and mechanical damage.

Application and Mix Ratio

PlexMate is a single component, which requires no additives or combining of materials to ensure uniform color and consistency. It is recommended that the material be thoroughly mixed with a power agitator for a short time before using. Thinning is not normally required.

Do not apply when the ambient air temperature drops below 50°F. Proper film integrity depends on the coalescing process of the latex to occur above 50°F during the first 6 hours of the drying period. Lower temperatures will sacrifice the film properties and may cause poor adhesion and surface cracking. Do not apply over a wet substrate or when inclement weather is approaching. As a characteristic of all acrylic, PlexMate has a high moisture vapor permeability and is not recommended over cold storage installations and roofing with long-term ponding water.
For optimum performance, a minimum thickness of 30 mils (dry) is required. The application rate of 30 mils is approximately 3 gallon per 100 square feet based on theoretical coverage in two 1-½ gallon applications.

PlexMate is designed for airless spray equipment. PlexMate may also be brushed or rolled on to substrate for trim and touch up work.

Standard airless spray equipment should be equipped with a minimum pump, tip, and those listed below.

Pump Ratio


Tip Size

0.030-0.045 inch

Fan angle

60˚ to 80˚

Hose Diameter

½ inch (high-pressure hose)



Working Properties

Viscosity @ 72°F (Mixed)

500 CPS



Dry Time* @ 72°F

10-15 minutes

* Dry time depends on temperature and relative humidity.


Physical Properties

Specific Gravity:



11.00 lbs.

Cubic inch per lb. of product

26.74 in3/lb

Tear Strength

ASTM D-624-98

105 lb./in.

Tensile Strength

ASTM D-412 die C

580 psi


ASTM D-412 die C


Tensile Modulus

ASTM D-412-97

570 psi


Clean Up

Dispose of all empty Plexmate component containers in accordance with local, state and federal regulations. Dispose of as non-hazardous solid waste.

Storage and Shelf Life

PlexMate should be stored in the original, unopened containers in temperatures between 45°F and 80°F. The shelf life of the material, when kept in unopened sealed containers at the recommended storage temperature, is 12 months. Containers should not be opened until ready for immediate use.

PlexMate will be damaged if frozen. Do not store material at temperatures below 45°F.


Shipping Class: Class 55 Non-hazardous