It s called brick mold and it s a type of wood trim that s about 2 to 2.
Exterior window gap filler.
If applied to large gaps caulk can sag out of.
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Don t use caulk as a filler for poorly trimmed out windows.
Now when it comes through the wall there probably in the old window design was a brick mold or a trim that went around the outside of that window that was wider.
That s what actually when i say brick mold that s what it s called.
I bought a 1 2 inch backer rod and that seems the right size however the hole is really deep and gets a lot wider about 1 2 inch in.
Doing the first window and i notice there s a big gap between the window frame and the wall and i was wondering the best way to fill it in so i can caulk it.
And very often with the old wood windows there is a brick mold.
Caulk is intended for use on relatively narrow seams typically 1 4 wide or tighter.
These strong and effective wood fillers will suit any project whether softwood or hardwood window sills new or old wooden window frames.