Guides A-Z

Guide describing vapor retarder permeability, insulation interaction, and example construction in a hot-humid climate.

Guide describing how ice dams form and how roofs can be constructed to prevent them.

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 apply heavy membranes at eaves in cold climates to help guard against ice dams.

Guide describing how to re-roof an existing home with a sloped and add insulation above the roof deck.

Guide providing information about treating bulk water drainage issues and moisture control measures in existing basements and crawl spaces.

Guide describing how to design a water-efficient landscape that will minimize the need for supplemental water by using the WaterSense® Water Budget Tool.