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 ...

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 ...

Open-cell spray foam insulation usually costs between $0.44 and $0.75 per board foot. It’s full of cells that aren’t entirely encapsulated, or closed, which allows air to fill spaces in the ...

Here is everything you need to know about DIY spray foam insulation. Closed cell spray foam density is measured by weight.