Foam board insulation is easy to use and a great DIY way to add some insulation. It comes in standard-size 4×8 sheets and smaller sizes, in thicknesses from 1/4-in. to two inches. Some types of ...

"I feel like I've been conned by the government," she said, adding that she did not believe spray foam insulation should be available for sale until there is a better understanding of the product.