Liquid Rubber RV Roof and EPDM Rubber Primer



EPDM Primer is a rubber polymer water based roofing primer, and like its name; its been specifically designed for EPDM surfaces. EPDM Rubber is extremely hard to stick to without a quality Primer. This Primer does not react with atmospheric moisture allowing it to be opened and resealed for use at a later date. 

Basic Use

Primer is used to prime EPDM roofing membranes to provide improved adhesion for the Liquid Rubber RV Roof Coating and other Liquid Rubber Coatings.

Surface Preparation

All work surfaces should be clean, dry; free of dirt, dust; debris, oils; un-adhered coatings, deteriorated membranes and other contaminants that may result in a surface that is uneven or not sound. Clean the surface with Liquid RV Smart Cleaner and wipe down with acetone prior to the application of the Primer.  Primer is extremely sticky, it is best to apply on half the surface leaving a work area to stand on.  Apply Primer then top coating (ie. RV Roof coating) and then repeat on the other half where you can stand on the completed side.


  • Do not use as a membrane cleaner.
  • Talc, dust; oil, ice; snow or wet conditions inhibit good adhesion. Clean and dry surfaces are a necessity.
  • Not to be used on TPO and PVC roof membranes.
  • Install above 10C (50F) and rising
  • Do not apply later in the day if Rain or Dew is forecast

Equipment Clean Up

Use Soap and Water

Storage & Shelf Life

Store material in original unopened containers at temperatures between 40°F - 90°F (4°C - 32°C). Shelf life is 12 months when stored in unopened container.



Customer Reviews

Based on 31 reviews
Peter Pauli
No good

Can of primer came completely solid.

Hello Mr. Pauli. We apologize that your order reached you in that condition. Someone from our customer service dept. will be reaching out to you to provide a replacement or a refund. You should hear from us shortly.

Shawn Harel
Great product

The product works really well. I have redone two campers with roof leaks and enjoy working with this product.
Even thou my last order was not correct sales support was amazing and overnighted me the correct stuff.
Couldn’t have ask for better service.

Our RV roof has a new lease on life, thank you liquid rubber!

From the expert advise to fast shipping we are so impressed with the liquid rubber EDPM primer and liquid rubber RV roof products. We have full confidence that we are covered against leaks!

John P Claeys
Liquid rubber is genius!!!!

Just about completed my new pond which is 8x7 feet by 5feet deep. This is an absolute genius product for such a huge project! Works beautifully! THANK YOU LIQUID RUBBER!

Gary Beaulieu
Appears to have worked!

I applied this to my RV that I am restoring. The roof (40yrs old) was in it rough shape and I thought I would try this and it looks great. It has not rained yet but with a hose it appears to have worked fixing all of the micro fibre cracks and it looks brand new. We will see when it rains heavy how it holds up. I also bought to much so I will be sending one container back.


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