Spray foam has an R-value of 7 per inch while fiberglass is just 3 per inch
Fiberglass insulation holds in moisture and becomes ineffective.
Although the Spray foam insulation is not installed on the sub-flooring, it still works the same by being applied to all of the walls and working with the cleanspace encapsulation system.
Spray foam insulation is closed-celled, meaning that it wont allow for water absorption unlike fiberglass insulation.
Spray foam on the crawlspace wall.
Falling insulation and moisture both make the crawlspace an unhealthy and inefficient space.
While it is always good to have insulation in the crawlspace, some forms are better than others. For example, spray foam wont fall or hold in moisture like fiberglass and will ensure the energy efficiency of the home.
The water/ moisture in this crawlspace was being retained by the fiberglass insulation and causing rot in the wood posts. Water can cause other problems as well, including mold and mildew growth, bad odors, and structural damage.
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