Attn:"Sealant Experts" ProFlex RV Sealant splitting

[KevinS]

So I have been using Proflex RV on my 2014 Palomino since it was new. I starting using due to the great reviews it received from this forum and others. Every time I put it on it seems to split in a very short time. The attached pictures are about 5 or 6 weeks old. The cracks get worse over time. I honesty thought it had something to do with the way I was putting it on, So I tried be a diligent as possible. here is what I do:

1) Clean off old sealant with mineral spirits (turpentine up here) and a plastic caulking tool.

2) Clean off mineral spirits with Isopropyl alcohol

3) Allow to dry

4) Apply and smooth with finger moistened with soapy water?

I am at my wits end. I like the stuff but it is frustrating to see it crack so quickly. I sent a note to the manufacturer but did not get a reply.

Does anybody have any suggestions? I am OK with trying something else - even my old nemesis silicone.

PS I do not actually know what was on the unit from the factory, other than it definitely was not silicone. The only other thing I can say is the Sealant seems to get harder and then crack - way harder than silicone.

thanks for any help or advice you can provide!

Kevin

[Scrapper]

It most likely had Dicor self-leveling sealant on the roof seams and Dicor no-sag sealant on the doors and windows. Dicor gets firm but not hard. It will also shrink with age leaving gaps. The manuals for most RV's state to inspect all seams at least twice a season and repair as needed.

Most experienced RV'ers will use Eternabond tape on the roof seams. The stuff works great. As far as I know it doesn't shrink.

[KevinS]

Originally Posted by Scrapper

It most likely had Dicor self-leveling sealant on the roof seams and Dicor no-sag sealant on the doors and windows. Dicor gets firm but not hard. It will also shrink with age leaving gaps. The manuals for most RV's state to inspect all seams at least twice a season and repair as needed.

Most experienced RV'ers will use Eternabond tape on the roof seams. The stuff works great. As far as I know it doesn't shrink.

Thanks very much! The original seals did not hold up very well but better than 6 weeks , I think I will try the Dicor next year.

Kevin