Cold weather caulk
Daniel F. Vellone| Posted inGeneral Questionson
For my my new window installation my preference is to use polyurethane caulk but most of the products available locally have a low end application temperature of 40 degrees f. Temps here are ranging in the low 20’s and expected to drop fro there. Is there a recommended polyurethane caulk that can be applied in the lower temps?
Replies
Check out the instructions for this caulk:
https://www.geocelusa.com/wp-content/uploads/2017/03/3300Tech.pdf
I suspect there is little if any difference between the curing properties of the various brands of polyurethane caulk. So that application temperature range limit of 40F would appear to be more of a recommendation than a restriction. Just make sure the caulk tube itself is warm, and the surfaces are free of any water (liquid or solid).