Spray-on Expanding Foam Insulation - AVS Forum
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Old 02-15-2000, 01:55 PM - Thread Starter
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I've read several posts about gluing drywall between the ceiling joists and even attaching sheets of lead to ductwork, but what about hiring an insulation contractor to spray expanding foam all over the underside of the floor and over the ductwork and everything before hanging rock on the ceiling? I would think this could be very effective, but...?
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Old 02-15-2000, 07:43 PM
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It can be effective BUT you must use an open cell type foam. If not, it's not very effective at all.

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