Hi,
I have a Circa 1950’s home that was retrofitted with AMMA Windows by Milgard in California in the 1990’s.
I have found that the retrofit has left one inch gaps on the bottom and or top of the old window frame. The installer covered the openings with vinyl stripping on both the inside and outside of the window.
Perhaps at one time this was an effective way.
What I have found while doing an airflow test, is that I am loosing 70% of my heating and cooling through these gaps.
AMMA Replacement Window by Mildard
Re: AMMA Replacement Window by Mildard
To answer the question on the other thread regarding the application of a spray foam, first make sure you’re using a polyurethane minimal expanding foam (blue can at Lowe’s for instance). The primary objective isn't necessarily filling the entire cavity (front to back), but rather creating a barrier that prevents exterior air from migrating to the interior. Once you have the perimeter sealed from the wood jambs to the sides of the windows you can then add additional layers of spray foam in order to insulate the space.
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Re: AMMA Replacement Window by Mildard
Doing window and door foam with out a progun is difficult.
You your OP you asked about how. leave the exterior cover strip in place if it is nicely sealed to the exterior, spray the gaps half full, let expand and cure, knife off excess, reapply inside cover.
How many do you have to do?
You your OP you asked about how. leave the exterior cover strip in place if it is nicely sealed to the exterior, spray the gaps half full, let expand and cure, knife off excess, reapply inside cover.
How many do you have to do?