Guide describing how to add spray foam insulation to the underside of the existing roof deck as part of the conversion of a vented attic to an unvented, insulated attic.
Home owners who use an HVAC system with a central air handler fan can realize significant energy savings by using a fan with an electronically commutated (ECM) motor (see Figure 1). Savings will be even larger for homeowners who run the HVAC fan continuously or frequently to filter the air or to...
Guide that illustrates how and when to encapsulate ductwork in unconditioned attics, increases the R-value of duct insulation, mitigating condensation issues and reducing air leakage.
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.