Foundations & Floors -

Air Sealing/Insulation

This guide describes IECC 2009 and 2012 and ENERGY STAR Certified Homes insulation requirements.

This guide describes IECC 2015 and DOE Zero Energy Ready Home insulation requirements.

Guide describing the use of building cavities as supply or return ducts.

Guide describing how to air-seal and insulate the floor above an unconditioned basement or crawl space.

Vapor retarder plastic should not be installed over fibrous insulation on basement or crawlspace walls unless rigid foam or spray foam is installed directly against the concrete, behind the blanket insulation.

Guide describing how to insulate slabs on grade in climate zones 3 and higher.