I discovered that there were sash weight pockets behind the ro.
Insulating window weight pockets when installing replacement windows.
Shim four corners and check window for plumb.
Do not drill any holes.
How to install window replacement duration.
The lath and plaster is flush with the window rough opening.
This house is a 1917 single brick veneer exterior lath and plaster interior the wall is i believe open from attic to basement.
Apply insulating foam sealant between window and rough opening.
Caulk gap on sides and top.
After some searching online i found the best practice to be removing the trim and insulating the weight pockets with tuff r rigid foam insulation.
Best way to insulate around a replacement window last week a visitor to my site asked me about the best way to insulate around a replacement window.
These open pockets are cold air collectors.
Even if a house has been insulated with pour in pump in or foam insulation the weight pockets are left open for the weights to operate.
Insulating behind the rough opening.
Remove the weight and insulate through the pocket.
I ve had some difficulty with doing my first solo window replacement re.
Now that i have begun the process of removing the trim i am finding it to be perhaps more work than it is worth.
Cut strips of foil faced rigid foam insulation to fit into the weight pockets.
Use a hammer and pry bar to carefully remove the wood trim from around the inside of the window exposing the sash weight pockets.
A few days later i got the same question so i decided to compile my response into an article below.
Stack strips to completely fill the void.
In this video this old house general contractor tom silva explains how to insulate a window with sash weights.
Easily insulate the pockets of your old windows when replacement windows have been installed.
2 cut a strip of foil faced rigid foam insulation to fit snugly into the space between the side jamb and plaster or drywall.
If you remove the inside jamb to expose the pockets and install a wider window this isn t a problem.
When the old window is removed this will reveal a piece of the jamb that is held in by 2 screws.
Insert screws in pre drilled holes in window frame.
Place corner bead of sealant around perimeter of window frame where new frame contacts original window frame.
Use foil tape to seal the joint between the window jamb and foam insulation.
Minimal expansion foam probably won t work for this area.