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Guides A-Z

Guide describing how to insulate a basement to improve the overall thermal performance of the building and provide more dry, usable conditioned space for home occupants and for HVAC equipment.

Guide describing how to air seal attic access panels, doors, and stairs to provide a continuous air barrier at the ceiling.

Guide describing blown insulation into exterior wall cavities of existing homes with minimal disruption to occupants.

Guide describing how to insulate a vented attic in an existing home using blown insulation added to the attic floor.

Guide describing options for designing/locating the thermal boundary in new and existing homes.

Guide describing how to insulate and air seal dropped ceilings and soffits to prevent air leakage.

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.

Guide describing how to conduct a home performance assessment before beginning retrofit projects in existing homes.

Guide illustrating how to insulate a floor over unconditioned space with conditioned space above by adding insulation and air sealing.

Guide describing how to upgrade a wall with a floor overhang (or cantilever) on an existing home by adding rigid insulating sheating and or closed-cell spray foam insulation and air sealing.

Guide with information about how to upgrade a garage ceiling when a portion of the interior of the house is located directly above the attached garage by adding insulation and air sealing.

Guide describing how to insulate closed crawlspace walls and band joist areas with rigid foam board insulation.

Guide describing how to apply an air control layer directly over existing wall sheathing, and cover by two layers of insulating sheathing held in place by vertical furring strips.

Guide describing how to upgrade walls that separate the garage from the house by providing a continuous air control layer on the garage side of the wall and adding rigid foam insulation.

Guide outlining how to retrofit an exterior wall and/or attic to provide continuous air sealing.

Guide describing how to air seal and insulate fiber board ducts.

Guide describing how to air seal and insulate flex ducts.

Guide describing how to air seal and insulate metal ducts.

Guide describing insulation techniques for skylight shaft walls.

Guide describing how to apply spray foam insulation to ceilings in existing homes.

Guide describing how to install stucco over rigid foam insulaiton in new and existing homes.

Guide describing methods for insulating an unvented attic along the roof line.

Guide describing the design and installation considerations for recladding of above grade walls using insulated vinyl siding.

This guide describes how to install a rigid air barrier to separate the porch attic from the conditioned space. 

Guide describing how to insulate the sill beam or sill plate on the exterior side in a way that allows drying to the exterior, as part of an exterior wall upgrade.

Guide describing an approach to re-roofing an existing flat roof to improve thermal, water, and air control performance.

Guide describing how to re-roof an existing home with a sloped roof.

Guide describing wind washing and how to prevent it.