DO NOT USE the CLEAR FLEXSEAL and Rustoleum Spray Sealants

[Robert Wesner]

Just an FYI, the CLEAR spray-on water sealants are ABSOLUTE GARBAGE!!!

TOTALLY yellowed within a couple months and then cracked all out...!!

The black seems to work okay.

The caulking-style sealant are great, however............

[david craft]

Ive repaired a few coaches with flexseal on them. This product is difficult to remove and is only suitable for screendoors on rowboats. I use lexel or vulkem on the sides and whatever appropriate on the roof sections. On metal roofs thats liquid roof or equivalent...

[david craft]

liquid roof is almost pure EPDM and is mixed with a catylist. once applied, its touched up with epdm caulk.

lexel is a clear caulk found at ace. runs nicely and holds up well.

vulkem is a one component urethane, think sikaflex, but half the price. available in white, is slow to cure and last a long time

[Rich Thomas]

I used the sikaflex on the Palace when I bought it in the fall of 2014. It is a very good product and still looks as good now as when I put it on. the only draw back to it is the price $ 14- $15 per tube. Ill have to check out that Vulkem if it is comparable to the Sikaflex. I tend to stick with what I find to work and I really like the Sikaflex but, the price is a deterrent on the face of it;  over time though it's a good investment because holds up well.

[david craft]

ive used both...the sika is the best...no doubt. its smooth and creamy and gives a great finish. the vulkem is more grainy yet will still give a good enough appearance. both are one component polyurethane and very durable, lasting a long time and retaining appearance and function.

[Rich Thomas]

Keep anything silicone based away from your unit. stick with Dave's advice; he is the go to guy for all things R.V. 

[Kevin F Smith]

Good to know.  What's up, Robert?  Stalker...lol!

Kev