I'm not sure what my used RV (white) roof is made of - do I need to do anything to prepare the surface for epdm liquid roof, other than clean and dry?
1881019
If it is a EDPM roof there will be a chalky powder that slowly comes off the roof over a period of years. Rain causes the chalky stuff to show up on the upper edges of the RV if it isn't washed frequently. Or, you might even rub your hand on the roof before you clean it, and if there is a white residue on your hands, that would be the chalky stuff. You don't need to do anything special for the EDPM roof. A TPO roof does not chalk. But, It does need a primer coating that you would have to look up online to find out what it is. So, it is important to try to figure out what kind of roof you have. If it is a EDPM roof there will be a chalky powder that slowly comes off the roof over a period of years. Rain causes the chalky stuff to show up on the upper edges of the RV if it isn't washed frequently. Or, you might even rub your hand on the roof before you clean it, and if there is a white residue on your hands, that would be the chalky stuff. You don't need to do anything special for the EDPM roof. A TPO roof does not chalk. But, It does need a primer coating that you would have to look up online to find out what it is. So, it is important to try to figure out what kind of roof you have.
1881020
if your goal is to prevent or stop minor roof leaks, your clean and dry statements should suffice. i recently used "flex seal brite" and cannot recommend it to you. it took a long time to set up and reacted poorly when exposed to water. much success, bh, ph. d.
1881021
im t sure what my rv roof is made of .do i need to do any thing to prepare the surface fof epdm liquid roof
1881022
It's as simple as that. Even though I applied this to a clean and dried cinder block wall I don't see why it wouldn't work on your RV. This stuff is thick so warm your shoulder muscles up. Good luck.
1881023
We cleaned all the "powder" off and washed, scrubbed and dried it. Ours was a rubber roof. The info I found on the internet, mostly youtube, told and showed about preparation and application. I suggest you research the manufacturer's sight as well as youtube applicants who demonstrate it. There is a lot of info out there, and we also asked a local RV parts and repair place for a bit of advice.Good luck, our roof is still doing great and the fall rains and thunder storms here in the Northwest are not a worry for us now.
1881024
I am not sure if you need to treat your surface first. I was using it on brand new wood surface. One thing that surprised me was that it doesn't go on "like paint" because it requires mixing a catalyst with the rubber first, very messy and you better get the proportions just right. I must say that once mixed, it does go on easily and thickly and provides great protection so far.
196265
Per the manufacturer's spec sheet, EPDM Lap Sealant creates a secure, secondary seal along the roof's edges, air vents, vent pipes and screw heads. Compatible with EPDM and TPO sheeting, it adheres firmly to aluminum, mortar, wood, vinyl, galvanized metal, fiberglass and concrete. Ideally suited for aftermarket use, the lap sealant is one the highest volume products sold in RV stores today.Available in three formulations:Self-levelingSelf-leveling HAPS FreeNon-sag (not self-leveling)
119189
coming late but should be helpful for new comers. see detailed answer here http://www.epdmcoatings.com/qa/123/after-replacing-plywood-liquid-roof-without-membrane-finish
231271
Yes, you have to paint or primer over it when its done drying/curing. Other wise it literaly turns white and chalky from sun exposer. It a real thin runny type epoxy. So its difficult to keep mess to a minimal.
2178000
It comes with its own Hardner so there's nothing else to mix in. Not sure about your vinyl roof. I applied it to an aluminum roof.
1040784
Not sure what you're calling "older white rubber RV roofs"? We installed a total of 596 watts, 2, 128's and 5, 68's on the rubber roof of our 2004 Montana. They've been up there for a year now and don't show any indication of pulling up. We cleaned the roof with a preasure washer and Dawn soap.
1895224
To be on the safe side, I would clean the sufface with TSP, and then use the primer. I would also use a hard bristle brush during cleaning, to remove any loose sealants, or coatings. Be sure to caulk around any roof vents before application.Hope this helps.
839519
I think that a better resolution to your problem would be to apply strips of EPDM roofing materiel over the joint that you want to reinforce.So far as applying this over silicone, I don't know if that would work or not.
1616340
My roof is also rubber, but I have not tried emplacing the panels. I just unroll on the roof for the stay then roll back up afterward.
1657663
It's worked well for me on vinly and making rubber look like new. there's no abrasive or harsh chemicals so I doubt you'd have an issue with it even on an older vinyl top. Too be 100% sure I'd recco calling the manufacturer. Mst companies are pretty good about taking care of consumer questions and complaints. Good luck
334775
Mine looked to be made of Black Plastic Material and it had a shinny and smooth surface. The truck is gone so I cant go out to verify. As with just about any surface, I would imagine one could properly rough up the surface to accept the proper automotive paint without a hitch.
50890
Yes, i can be used on EDPM or other materials. I order some more 6 months ago, but haven't put it down yet. It is to be used to seal up and edpm roof on my house. I have used it before. it lasted well over a year and would have done better had i had better surface preperation. I collect a lot of dust in my area. it needs to be washed and cleaned to make sure it adheres properly. It must also be completely dry when it is applied. As i recall it has about an hour of working time before it starts to set up. An RV should be a breeze.
2178001
wash your roof and let dry, then apply,Cut in with a paint brush along edges and around vent and such, then I poured some out then used a squeege to spread. very pleased with results. when I was done roof looked all bubbled, once product was fuuly cured ( A week) depending on weather, humidity and temp. roof shrunck and had a smooth appearance. very pleased with EPDM
1462308
These are the greatest. Now for your question it depends on what kind of roof you have Rubber or Fiberglass. Your best bet is to ask a local trailer or RV supply place that actually does repairs or if that is not possible a trailer or RV repair place what they use. The first sometimes you want to have something that remains somewhat flexible and other times you want something that is more like a gum always very flexible. I forget what was recommended and I used it all so I do not have any left to look at. Anyway these reduced the odor to zero.
1823735
I used Eternabond 4" roof seal tape, with the spray primer, around all of my vents, skylights, roof edge seams and a couple of small cracks in the rubber roof covering (that may be the lap sealant you're referring to). Then after cleaning the roof I just painted right up to the edge of the roof seal tape. I didn't paint the vents, etc.
647143
not 100% sure on this, but what i can tell you is that its a pretty good product! i have a 1991 conversion van with a fiberglass roof. never been detailed before. after washing it, i applied this wax as directed and used a white cloth to remove. MAN, the gunk that came off. i couldnt believe it, with the minimum of effort. hand buffed, no machine. i used about half a bottle for it, so it goes a long way too. doesnt remove surface scratches like a clay bar, but it removes road grime like a champ. pretty much any meguiars products i have used worked well, so good luck. the price cant be beat either. not 100% sure on this, but what i can tell you is that its a pretty good product! i have a 1991 conversion van with a fiberglass roof. never been detailed before. after washing it, i applied this wax as directed and used a white cloth to remove. MAN, the gunk that came off. i couldnt believe it, with the minimum of effort. hand buffed, no machine. i used about half a bottle for it, so it goes a long way too. doesnt remove surface scratches like a clay bar, but it removes road grime like a champ. pretty much any meguiars products i have used worked well, so good luck. the price cant be beat... » Read More not 100% sure on this, but what i can tell you is that its a pretty good product! i have a 1991 conversion van with a fiberglass roof. never been detailed before. after washing it, i applied this wax as directed and used a white cloth to remove. MAN, the gunk that came off. i couldnt believe it, with the minimum of effort. hand buffed, no machine. i used about half a bottle for it, so it goes a long way too. doesnt remove surface scratches like a clay bar, but it removes road grime like a champ. pretty much any meguiars products i have used worked well, so good luck. the price cant be beat either. « Show Less
1555146
Well, certainly. Putting a white coating on the roof of your RV is going to cover it (the original roof) in a protective coating that is reflective & durable. The reflective component alone (especially if your roof is aging and losing its white reflective layer) is going to keep the interior cooler, as well as the rest of the roof components.