Attic. DIY spray foam insulation can be applied in the attic to seal gaps and holes and prevent air leakage, which can help to reduce energy bills. Open Wall Cavities.

DIY condo insulation worthwhile. By Bill Burnett and Kevin Burnett March 29, 2008. Q: ... Next, take a look in the attic to see if the insulation up there is adequate.

Blowing insulation into an attic can be a DIY task. It will likely require you to crouch under low, sloping attic rafters to distribute the insulation evenly.

‘A simple attic insulation is fine for DIY.’ But elsewhere, such as in walls, calling a pro in is a better choice. Meringolo explains, ‘Inside walls, a hole needs to be drilled in between ...

This type of insulation is expensive and not a do-it-yourself project, but it has one of the highest R-values at 3.5 per inch for open-cell and 6.5 for closed-cell. Both types are made with ...

Adding insulation to a typical home’s attic, flooring, basement, and crawl spaces can lower total energy costs by an average of 11 percent if you also plug unwanted air leaks.