About to EPDM liquid roof coat my trailer, advice?

The primer should also be a cleaner you spray it on with a sprayer let it set then wash the roof let dry then apply coating..if you are going to seal anything you have to do it 10 days pryer

newman fulltimer wrote:
The primer should also be a cleaner you spray it on with a sprayer let it set then wash the roof let dry then apply coating..if you are going to seal anything you have to do it 10 days pryer

Oh really its a cleaner and should be washed after? I wasn't aware of that, good info thanks.

There are videos on you tube

I would avoid using the cordless drill. That stuff is thick and puts a lot of strain on a drill. Cordless, especially only 12 volts, might not have the power to mix. You would hate to have it all go bad while you tried to find an adequate drill.

It goes on pretty easily, but can be messy. Have some crappy clothes and shoes to wear. From experience, I suggest long pants. It can be painful to peel off hairy legs...

Good luck and remember that it is normal to have some bubbles as it dries. It looked awful bad for a day or 2 after I fixed a section of my roof, but it dried fine.

newman fulltimer wrote:
There are videos on you tube

I searched before posting and only found videos applying the rubber, nothing came back with the primer, but youtube is a big place...

The bubbles that form look scary - but dont sweat them.

If you have any Fantastic fan vents or Maxair vents over your roof vents, take them off before you start.

Clean off excessive globs of caulking you may have around the vents, roof racks and the joints where the roofing meets the front, back and side of your rv. Not all the caulking - just excessive huge mounds.

Mask off at least an inch beyond the perimeter of the roof, i.e, roof - edge of roof (front/back/side) - 1 inch - put masking tape here. When you paint on the EPDM paint all the way onto the masking tape. Wait at least an hour after you paint on the epdm to start setting up, then slowly peel the masking tape off. Not only will you have a nice straight line but you will have sealed up the joints all the way around the roof of the RV! Dont wait for the EPDM to fully set before you remove the masking tape or you will make a mess then.

Paint the EPDM over the edge of every vent on the roof and over the screws holding the roof vents in place. You have sealed up the edges of the roof vents for a good long time and you wont have to caulk them for a long time.

I painted the EPDM over the grey and black water vents on the roof. The plastic vents were looking a little rough from years of exposure to the UV and this will protect them and give them a few more years of life.

Looking at 16minute video "instructional video for application of liquid roof on rv roof"

newman fulltimer wrote:
Looking at 16minute video "instructional video for application of liquid roof on rv roof"

Ya i see it, but I can't find any section that talks about the primer... thats why I asked on here and appreciate the helpful suggestions I am getting.

Wouldn't the mfg of your brand of EPDM coating have information about a primer or steps to take before applying the coating?

westend wrote:
Wouldn't the mfg of your brand of EPDM coating have information about a primer or steps to take before applying the coating?

Yes they do. I wasn't asking for instructions. I was asking for advice from people who have done it before and what they would do different next time. Posters above seemed to have gotten it.