At one time, builders thought insulating the crawl space with fiberglass batting was a good practice. Time has shown us that this is not the best idea. It frequently comes loose and falls out of place, which is frustrating and wasteful. It’s not insulating anything when it’s falling to the ground.
Batting absorbs and holds water, like a sponge. Since this sponge batting is attached to your joists, beams, and subfloor, the moisture can affect these wooden pieces. Over time, if the fiberglass batting absorbs enough water, it can become too heavy for the fasteners and fall out of place.
Reasons to Use Spray Foam Insulation
Cons of Using Spray Foam
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