Guides A-Z

This guide provides information about installing 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 a method for insulating an unvented attic by spraying foam insulation along the underside of the roof deck.

This measure guide describes the need to provide an architectural drawing for a future solar hot water installation. 

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 add spray foam insulation to the underside of the existing roof deck.

Information guide describing how to calculate ventilation area in existing roofs.

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

Guide describing the installation of gutters, downspouts, and alternate options for managing rainwater run-off from roof.

Information guide describing how to assess attics, ceilings and roofs before proceeding with upgrades in existing homes.

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.

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

Guide describing how to apply heavy membranes at valley/roof deck penetrations in wet climates to help drain water away below the roofing.

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

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

Guide describing insulation techniques for skylight shaft walls.

This guide describes procedures for assessing feasibility of solar resources, and designating location of propolsed PV arrays and solar thermal panels.

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

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

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

Guide with details about how to provide a continuous water control layer across the roof assembly by sealing all roof penetrations in existing homes.

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 how to install and properly integrate flashing at the intersection of an existing wall and an existing intersecting roof

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