ENERGY STAR’s attic table, based on the 2021 IECC, runs R30 to R60 by climate zone. Here is how to find your zone, measure what you have, and do the math.
How Much Attic Insulation Do You Need? The Climate-Zone Answer Read Post »
An uninsulated attic hatch is a bare patch and an air leak. Here is the dam, the foam, the weatherstrip and the latch, by access type.
Attic Hatch Insulation: Seal the Biggest Hole Up There Read Post »
Insulation does not stop air. Seal first, then insulate, and here is the checklist that tells you sealing is actually finished before you buy a bag.
Air Seal Before You Insulate: Why the Order Is Not Optional Read Post »
