Settled fiberglass leaves the top plate exposed
Why it happens here
Fiberglass batt settles over decades, and in Fruit Heights attics the vibration from canyon winds accelerates it. When the material drops below the top plate, cold air pours straight into the wall cavity.
Our approach
We air-seal the top plate with spray foam first, then blow in cellulose to a consistent depth. The air seal does the work that the settled batt stopped doing years ago.