What Dicor for roof and which for walls?

FWIW, I started to use the Dicor non sag on a vertical application and was not impressed when working with it. Ambient temps were about 70 or so, done in the shade. To me, it seemed to skin over quickly making it look horrible. The rest of the tube was trashed and one if these days I will take the time to remove it and find something a bit easier to apply.

Outdoor temperature affects how self-leveling the Dicor will be when applied. If I am in full sun at 70 degrees it levels out. If I apply it at lower temperatures in the shade it will not level out at all.

For the sides it is worth the extra effort to put blue masking tape on both sides of the seam. Proflex is difficult to get out in a consistent width and so I go over it with a spakling blade, let it set up a bit and then before it has fully hardened I will remove the tape. Proflex comes in white and clear and I would recommend the clear as no RV white will be the same as the Proflex white.

The only place I have used the non sag is in the roof where it comes over the side up high.

I've used the Dicor non-sag for vertical surfaces. It's good, but it's rubbery and gets dirty looking pretty easily IMO. Proflex is firmer, and it's brighter and stays that way longer. Proflex or the equivalent (Geocell, Sikaflex, OSI Quad) is what the manufacturers use when they lay a bead over a window seam or something like that. It looks a lot like silicone, but it's not.

Cummins12V98 wrote:
It will say right on the tube, for vertical surfaces "lap sealant non-leveling non-sag" #551 LSW and for flat surfaces "lap sealant self leveling" 501 LSW.

Thanks. Am starting off with three tubes of each, and hope that does the job.

As for Eternabond, that is one of the two best way to fix things for good, but I am trading this TT in for a "B" eventually. I learned that in some buyers' eyes, EB affects the sell price because of its looks, so I'm staying with caulk for now. Were I keeping the TT indefinitely, EB would be a no-brainer.

It will say right on the tube, for vertical surfaces "lap sealant non-leveling non-sag" #551 LSW and for flat surfaces "lap sealant self leveling" 501 LSW.

Look up Eternabond for the roof and you will only have to do it once and you will be able to forget about it for the next 10 years or more.

One tube per foot of length is definitely wrong by a huge amount. For typical maintenance needs, one tube of Dicor lap sealant will probably do your whole roof. Two will for sure!

For vertical caulking, use Proflex RV Sealant. There are equivalents from other companies, but Proflex seems to be the market leader.

Self leveling for horizontal applications.