Silicone Caulk – Subzero application??
What are the temperature-related problems with using silicone caulk in freezing weather?
If a large multi-part window install butts aluminum and composite up to brick, will the silicone caulk bond in the cold?
Should I wait until 40+ degree weather before doing the work?
Replies
Your caulking tube should have an 800 number on it, I have often gotten valuable tech support for just such questions. Geocel, and PL polyurethane caulk may work for this if the tubes are kept warm before use.
Geocel is good to -40F OR -40C funny how both scales meet there huh?
First time I that ever occurred to me I was sitting right seat in a small jet as co-pilot. Any time I hear someone say 40 below I ask F or C. When they say one or the other I say "whatever".
Lexel will go pretty low IIRC.
Edited 1/10/2006 10:25 pm ET by rasconc
Don't know the answer to your question but the label on lexel (which I believe is superior to silicone anyway) indicates you can use down to 0 degrees F. For a couple of bucks more per tube, why take a chance with silicone?
Get some Paint Flex silicone. Lowe's has it here. The label specifically states that it is good to (way WAY below zero). I have used it for winter caulking too. Tricky stuff to get a nice finish on but very durable and will withstand weather conditions that I'm sure never gonna go out to caulk in. Supposed to be paintable too and I prefer it to the sister product (Weather-Flex) for that reason.