Ian Garrett
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Sash window diagram

When a double-hung window just won& open, the most likely culprit is a bad paint job—but there are other possible perps. Here& how to open a stuck window and figure out who done it.

Attention to details. An air barrier can't be considered complete until air leakage is addressed at seams, penetrations, and electrical boxes.

An air barrier cant be considered complete until air leakage is addressed at seams, penetrations, and electrical boxes.