What is the best way to insulate replacement windows between the window and jam?
Question:refurbishing a 1925 farmhouse
Answers:
Fiberglass insulation was the standard for years, still works well. Remove pieces from paper (if paper backed) and use something to push pieces from the inside toward the front of the window until the cavity is filled. Do not overfill.
Spray foam is better, but be very careful which kind you use. Do not use standard spray foam or even minimal expansion foam. Both of these products can, under certain conditions, put pressure on the frame of the window and cause it to bind or even push it out of square. Minimal expansion does not do it as bad, but it can still be a problem.
The product you need is a zero expansion foam. It will not put pressure on the frame, and as an added bonus is much easier to clean up if you get a bit messy. It does not stand up to the elements as well, so it is not suited to an application where it will be exposed. You will cover this anyway, so that is not a problem.
use fiberglass insulation. pack it in there loosely so not to bulge the frame but tight enough to do some good.
outdoor caulking, this will seal out water and rain and bugs. Make sure you use paintable, incase it can be seen.
get a can of expanding foam from your local hardware store. This is the best.
use a spray foam,from home depot.
Well I think the way to go is with high R-value insulation torn into strips and placed gently so as to avoid compressing it. I used the spray stuff (polyurethane foam I believe) before because I thought it would be easier but I put too much in: it expanded right out of there and needed trimming afterwards.
Canned foam. Let it set for a couple days and cut off the excess.
Fiberglas!! Or backer rod if you can find it. This is just a closed cell foam that come in various sizes that can be poked into the voids.
Would`nt suggest aerosol foam. Most manufacturers void their warranties if this is used.
Also, if you`re just removing old sashes and installing into the old jambs, don`t forget to fill the weight pockets with insulation also.(If you have them)
More Related Questions & Answers...