This starts with the cost per board foot of the two types of spray foam insulation: open-cell and closed-cell. Open-cell insulation costs between $.41 and $.80 per board foot, while closed-cell ...

Cons: Foam board insulation can be harder to install snugly in unusually shaped spaces, leaving gaps for air to flow. To create an effective air and moisture seal, you need to tape all seams ...

Let’s face it: cutting foam with a knife, even a serrated plastic knife meant for the job, is a messy pain in the ass. This is as true for insulation board as it is for the ubiquitous expanded ...