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keithcody t1_j6fonbq wrote on January 30, 2023 at 12:22 AM

There’s usually a cardboard honeycomb inside the door to strengthen it. You probably can’t spray foam very far

Swigy1 t1_j6gw8vy wrote on January 30, 2023 at 5:54 AM

In addition, you need mass to stop sound if the item is not absorbent, such as an engineered acoustic foam. Spray foam won’t do anything.