Fiberglass Batts or Rolls vs. Blown-In Insulation When you ... Use the expanding foam insulation for cracks up to three inches wide. Recessed lights that protrude through the ceiling must either ...

Rolls of R-13 paper-faced fiberglass insulation ... Narrow gaps about 1/2-inch or smaller are best filled with expanding foam insulation. For larger areas, use the insulation that you ripped ...

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 ...

He had deep experience with foam insulation because it was used to insulate ... is harder than trying to roll a boulder up Mt. Washington. It’s a complex multivariable problem.