So if you are looking for a strong insulation, a closed-cell spray foam is what you want to grab. As for smaller fill-ins, an ...

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 ...

Half a gallon of wood glue, a pile of random, scattered resistors, or in [Ken]’s case, closed-cell silicone foam. Wanting to avoid this situation he set about trying to make his own silicone ...