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EPDM Roof Repair
EPDM Rubber - Liquid EPDM Roof Coating
Proflex Primer

Proflex Flexible Epoxy
F1501 White

Proflex Primer® is simple to apply, only has two parts, flexible, and boasts a one-to-one volume/mix ratio

Asphalt and tar are two surfaces that require more preparation. Do not use if you live in a region prone to snow—unless you are also using Liquid EPDM. When working with asphalt, remove cracked sections and repair with Proflex and Rubber mix before applying Poly Fabric.


Once the ProFlex is applied, the Liquid EPDM must be applied within 24-48 hours to ensure proper adhesion. The ProFlex needs to be a little tacky when applying the Liquid EPDM. If the ProFlex is tacky but does not pull up when you walk on it that is the ideal condition to apply the Liquid EPDM. If the ProFlex is allowed to dry the Liquid EPDM will not adhere properly. This will necessitate you waiting until the ProFlex has fully dried and then sand and recoat before re-applying the Liquid Rubber. The day which you apply the ProFlex primer needs to be above 50 degrees. Lower temperatures at night will slow the cure but will not affect the product. Do not apply ProFlex if you anticipate freezing temperatures BEFORE you are able to apply the Liquid EPDM Rubber. NOTE: The above procedure is not recommended for use in climate zones that experience temperatures below zero degrees F.

How to Use

  • Swelling is prevented with Proflex Primer. There's no more worry over oils, solvents, and fats near kitchens or restaurants.
  • Urethane and epoxy coatings don't easily adhere. However, the proflex permits recoating.
  • Worn and weathered surfaces on wood or insulating foams can be fixed with the Primer first and then the Liquid EPDM.
  • You can re-coat thermoplastic roofing after using Proflex Primer.

Makeup and Aesthetics

After the film has fully cured, you'll enjoy impressive strength and flexibility. Degraded surfaces can be rehabilitated. However, keep in mind that Proflex Primer is, indeed, a primer. An additional top coat, such as Liquid Rubber or Liquid Roof, is best.

Prep the Surface

Check that the surface is free of algae, debris, dirt, mildew or oil. Remove any loose paint or pieces. Repair anything that's damaged. A higher pressure wash is the best way to cleanse the surface.

How to Apply

Tools required include a brush, roller, and rubber squeegee for flat surfaces. You can also use a pressure pot spray.

Tips for Spreading

A 5.5 mil. thickness is caused by a 200 square foot per gallon application. This is ideal, but difficult. Most people achieve coverage of 150-175 square feet per gallon when using a squeegee and roller. Keep in mind that more porous and rough surfaces will require more coverage.

Product Statistics


2500 psi after 7 days chilled

Bond Strength

250 psi (aged)

Chemical Type

Two Component, flexible Epoxy

Compatible Solvents

Xylene, Toluene

Cure Time

10 hours to touch at 70° F


200% @ 77° F

Flash Point

Above 150° F

Mix Ratio

1 to 1 by volume

Pot Life

45 minutes @ 70° F

Solids Content

86% by Volume; 89% by weight

Spread rate at 1 mil

1379 square feet

Storage Stability

1 ear minimum

Tensile Strength

404 psi after 7 days @ 77° F Temp.


71KU (900 cp) @ 77° F


118 g/l (.99 lb./gal)

Weight per Gallon

9.2 pounds

A controlled laboratory was used to gather this data. However, conditions may vary. The outside temperature will impact a number of specifics. Higher temperatures mean faster cure rates and less time for you to work. Don't delay after mixing the product. Ration 30 minute increments to ensure you can get the job done. For more information, call us at 855-281-0940

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Corporate Address: EPDM Coatings N.E Sales Office 494 Bridgeport Ave Suite 101, PMB 342 Shelton CT 06484-4748, Call: 610-298-1989, Fax: 702-977-2936
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