*
Maybe its just my fear of water but is there a problem with caulking behind the nailing flange of a new window prior to installation i.e. expansion?
Discussion Forum
Discussion Forum
Up Next
Video Shorts
Featured Story
![](https://images.finehomebuilding.com/app/uploads/2024/07/09110427/01232522-autmoatic-fresh-air-thumb-16x9.jpg)
Automated casement and awning windows from Marvin can be opened and closed with switches, set up to operate on a schedule, and programmed to react to temperature and humidity levels.
Featured Video
How to Install Cable Rail Around Wood-Post CornersHighlights
"I have learned so much thanks to the searchable articles on the FHB website. I can confidently say that I expect to be a life-long subscriber." - M.K.
Replies
*
We have been for years on all flanges especially across the top flange. We use vulkem or silicone.Latex will also work if you will have a few days dry weather for it to set up ( at least in the rainy season). Caulking is cheep insurance esp for vinyl windows where you are not supposed to nail the top tight.Depending on application we will also use "moist-stop" or a metal flashing across the top.
*
Maybe its just my fear of water but is there a problem with caulking behind the nailing flange of a new window prior to installation i.e. expansion?