Which Sikaflex?
Which model# is recommend when I install the awning to seal the bolt holes and brackets. It's a Carefree awning, so it has those aluminum plates with thru-bolts. Then the awning simply hangs on those....
Forum Discussion
I am re-caulking my NL with Sikaflex 505UV (white). I read a lot of forums and info about caulk/sealant and finally chose 505UV because Sikaflex says that it is made for external sealing on RVs. I did not run across any forum posts about 505UV that I recall. But, I did find that many RV supply stores stock it, including my local dealer. The other contender was 3M 4000 UV, which it seems is what the NL factory used originally. Some of the factory caulking is still good after 8 years but some had failed entirely.
The 3M product is tough and tough to remove. I won't know how the 505UV holds up for a year, or several. As near as I can tell, both the 4000 UV and 505UV use the same basic chemical base; Polyether. In a couple of areas I removed only the top part of the 3M product then applied 505UV over the top of it, figuring that they may be compatible. I'll find out after some time.
The 3M product is tough and tough to remove. I won't know how the 505UV holds up for a year, or several. As near as I can tell, both the 4000 UV and 505UV use the same basic chemical base; Polyether. In a couple of areas I removed only the top part of the 3M product then applied 505UV over the top of it, figuring that they may be compatible. I'll find out after some time.
