Liquid Rubber EPDM & TPO Primer for RV, Camper & Trailer Roofs, 1 Gallon

Works as should so far. Very sticky when down.

06/06/26' Brushed on first coat with a 4 inch wide fine bristle paint brush on a 70° day in complete Shade. My EPDM roof is only 8' wide X 18' long with several roof top obstructions. The Liquid Rubber Primer spreads easily. I allowed 48 hours dry time as the temperature fluctuated. Used a roller to apply a second THICKER Coat. Primer remains sticky even after 72 hours. I am Extremely Satisfied with the ease of this L.R. brand primer. BE SURE to use a LONG stir stick to scrape bottom of tub when stirring the primer.

Excellent primer. However remains VERY tacky after drying to the point that you cannot walk on it!!! Follow the recommendations to doing one side first and then apply your coating before doing the other side.

Excellent primer. TPO RV roofs are difficult to get any sealant to stick. This assures we get the best possible coverage and application to prep for caulking. However, the manufacturer rubber caulk tube sealant lays beautiful and thick… their own brand caulking will STILL NOT STICK, even after deep cleaning and primed. I would seal with rec pro caulking self leveling and non sag on rolled areas.

Seems to be a good product and applied on rv roof top

Highly recommend using before applying sealant. Fast delivery. Excellent transaction.

I recommend the primer, many skip this step but it’s important if you want that product to stick as it’s intended.

Goes on very thin takes many layers

I bought this for my camper renovation. With a few help from online tutorials, install went without hiccup. I have also bought the brand’s paint and application was manageable. Will review it’s durability after some time. Great product!

Works well

I'm currently working on my old 1993 Sierra 5th wheel and seriously doubt the roof has been taken care of over the past 10+ yrs. Was considering not buying this primer and only buying the rubber sealant, since the roof did have a rubber sheet that was covering it. However, on closer inspection, I found that it was cracked in several locations and needed extra care and sealing so, I decided not to be cheap and bought this primer. Did test a spot on the roof with only the rubber sealant paint and found out that the rubber paint, covers better/thicker when I used this Liquid Rubber EPDM Roofing Primer first. A word of CAUTION... Do NOT paint the whole roof of your trailer with the primer and then think you can walk on the roof and paint the rubber sealant paint. This stuff IS sticky and stays sticky and your feet will get stuck. Not that you can't remove your feet but, you are fairly high up in the air and getting a foot stuck can result in you tripping and heavens forbid, falling off the side of the roof. Paint the primer in sections where you know you can reach with a roller attached to a broom handle or other. Then go back and paint another section with the primer, overlapping a bit of the previously painted primer. Paint the rubber sealant paint over that when it's dry/tacky and so forth. Once you've got a whole coat of the rubber sealant paint on your roof, you can walk on it when it's dry and paint the rest of the coats you will need to make sure your roof is waterproof. I also re-caulked, primed and painted around all the vents, prior to dealing with the whole roof. I'm very pleased with the result!!

This primer is very strong and sticky. It does its job, but even when it dries you won't be able to walk on it on the roof of your RV or you'll get stuck with your shoes. Even after 3 days, it is still sticky. So, if you want to paint your roof with liquid rubber afterwards, you have to wet your shoe soles to get a step at all. It is best to walk on the freshly laid liquid gum and follow from the beginning of the roof to the end. Otherwise, you tear the membrane off the camper's roof, trying to tear your shoes off the camper's roof.

Exactly what I expected and very pleased with the results. First time using and no problems!