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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.

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

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

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

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

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

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

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

Guide describing how to install step and kick-out flashing on roofs.

A guide for choosing, installing, and flashing roof anchoring systems for solar panels.

Guide describing insulation techniques for skylight shaft walls.