Guides A-Z

Guide describing the installation of insulating sheathing above the roof deck on existing homes. This retrofit assembly is appropriate for homes with conditioned attics or where the retrofit is intended to create a conditioned attic.

Guide providing guidance on insulating attic eaves in new and existing single-family homes and multifamily buildings.

Guide describing application of a radiant barrier layer in the attic to block radiant heat transfer between hot surfaces and heat-absorbing surfaces.

Guide describing how to increase insulation in existing homes by installing batt insulation on the ceiling plane of a vented attic.

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.

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

Guide describing how to provide a continuous water control layer across the roof assembly by sealing all penetrations for pipes, vents, etc. in existing roofs.

Guide describing how to install and properly integrate flashing at the intersection of the wall and roof on an existing home.

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 insulation techniques for skylight shaft walls.

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

Guide describing construction of sloped roofs that are unvented and are insulated above the roof deck.

Guide describing options for designing and locating the thermal boundary at either the attic floor or along the roof line in new and existing homes.

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

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 and add insulation above the roof deck.