What's the best RV sealant?
I have new gutter spouts with extensions to install. After installing the new gutter spouts with extensions, what should I use as a sealant?
Forum Discussion
westend wrote:Ruthless wrote:
Does anyone use:
CW 221 SEALANT SIKAFLEX 10.3 OZ
or
WHT 505 SEALANT UV HV SIKAFLEX
I've used Sikaflex for construction applications. Both of the Sikaflex products you listed (227, BTW) are urethane based polymers. The first one is the most applicable for RV use but it has less elongation and tensile strength than the Geocel products. It will work but in your context of this thread, is not "the best".
gotta check my owner's manual again but I think I need a urethane type of sealant. are you indicating that the second one 505 would be preferable to the 221? I did find a 3M white sanded polyurethane caulk if anybody has any experience with that.
bumpy
