Surface should be clean, substantially free of loose and without standing water.
TYPICAL PROPERTIES (When mixed)
Mix Ratio: 1:1 by volume
Viscosity (Brookfield): 750 cps
Gel Time: 55 min.
Cure Time: 24 hours
Shore D Hardness (72 hrs): 52
Adhesion (aged): 100% @ 730 psi Applying over Smooth Non Porous Surfaces
Smooth Aluminum, New Galvanized Steel, Glass and Plastics such as ABS, Polypropylene, PVC,
Polystyrene, and Acrylic must be primed with Proflex Primer® to improve adhesion. Hypalon and
other Thermoplastic Olefin membranes must also be primed with Proflex Primer®
Spray On Urethane Foams Since there can be considerable variations in density we recommend priming all
roof foams with Proflex Primer® in order to produce a uniform surface and improve adhesion to the
Applying over Previously Painted Surfaces Epoxy and Urethane patching products, caulks and coatings
must be primed with Proflex Primer® to improve adhesion.
Applying over Porous Surfaces When applying over porous substrates, use Proflex
Primer® to stabilize the surface.
Applying over Masonry or Concrete
With masonry / concrete, the surface to be coated must be relatively smooth (steel troweled) and uniform (not
honey-combed, full of imbedded stones or aggregate breaking the surface, etc.). The surface must be
structurally stable, dry, non-porous, and free of oils, debris, and flaking or loose paint. New (green) concrete
should be aged 10 days. Fill any cracks, or spalling or other surface defects on the concrete surface with
Proflex Flexible Epoxy®, Butt Putty® Crack Filler Gel or ProFill® to level and smooth out the
Using Proflex Primer® with EPDM Liquid Rubber® An example of substrates that need to be
coated with Proflex Primer® prior to application of EPDM Liquid Rubber® are:
Impact Resistance: > 174 inch-lbs.
Mandrel Bend: 1/8” no crack
7 days 15 days
Tensile Strength – Ambient: 808 psi 1390 psi
Tensile Strength – Chilled: 3900 psi 6610 psi
Elongation – Ambient: 139 % 132 %
Elongation – Chilled: 68 % 27 %
Modulus of Elasticity – Ambient: 79.7 psi 331 psi
Modulus of Elasticity – Chilled: 1150 psi 1180 psi
Hot Tire Print No permanent imprint @ 2 hrs., 140°F