Closed-cell polyurethane spray ... wall cavity filled with five inches of foam will achieve an impressive R-34, almost double ...

Depending on the region and market, spray-foam insulation can sell for ... loose fill can be installed in a wall through access holes after the interior finish has gone up, or installed into ...

For attic walls, the recommended R-value varies based on climate zones. Each type has pros and cons. For example, fiberglass insulation is cost-effective but less airtight, while spray foam ...