Has anyone experienced caulking failure when using Vulken 116?? The caulk is less than one year old and is not sticking to primed/painted rough-sawn plywood soffits. This is occurring both at the back of the fascia and at the intersection of the plywood siding/soffit. This is the first failure I have seen with Vulkem, been using it for a long time. Any thoughts???
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Replies
Was it tooled? If so it's possible that the tooled edge is so thin it has little or nothing to stick to and pulls away in those areas.
G
I've used it within the past year a couple times. No problem whatsoever. I try to run an untooled bead most of the time, but on occasion I will tape both sides and smooth and pull tape for a crisp line.
Have had zero problems.
Contact Tremco I believe, read them the code number-usually when too old it is near impossible to get it out of the tube.
What were the conditions? temp, how wide a gap, well fastened substrait?
A soffit like that can move quite a bit, especially if the wood is fairly new. Probably more motion than the caulk could handle.
Tooling
I too have had zero problems in the past with the product, applying in the same manner and the same circumstances. My thoughts are old product, incompatible paint. The weather was in the 60's, everything was primed and painted indoors before installation. The caulk was tooled, so there was a thin edge, but the whole bead (1/4") just let loose.
Very strange, and time consuming to fix.....I will be calling Tremco.
Remember, you can get caulk failure from too thick of a bead more readily than too thin of one, especially in a narrow gap.