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Guide describing how to install obvious ventilation controls for continuous and intermittent exhaust fans used for whole-house ventilation.

Guide describing how to install ventilation air inlets in open locations at a safe distance from potential air contamination sources.

Guide describing how to set controls on an exhaust fan for continuous operation.

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

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

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

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 options for insulating and air sealing at either the attic floor or along the roof line in new homes.

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

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

Guide describing causes of condensation in attics and roof assemblies during cold weather and ways to reduce this condensation.

Guide describing how to install a radon-mitigating vertical ventilation pipe in new and existing homes with various types of house foundations.

Guide describing how to select and install whole-house ventilation systems for existing homes.

Guide describing how to apply spray foam insulation to the floor of the attic in existing homes.

Guide describing how to air-seal and insulate a ceiling where the insulation is installed on top of the ceiling (on the attic floor) in a vented attic.

Guide describing how to install an exhaust fan in an attached garage to pull fumes out of the garage and to depressurize the garage with reference to the home.

Guide describing a method for insulating an unvented attic by spraying foam insulation along the underside of the roof deck.

Guide describing steps to take to minimize indoor humidity during cold winter weather.

This guide describes how to install a whole-building ventilation system to provide adequate dilution of indoor air contaminants.

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

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

Guide describing the testing of duct leakage in central ventilation systems for multi-story, multi-family buildings.

Guide describing the installation of roof vents that are resistant to damage from high winds and entry of wind-borne rain, wildfire embers, or pests.

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 install a bathroom exhaust fan to remove excess moisture.

Guide describing how to correctly air-seal a wall with missing top plates or open wall cavities.

Guide describing wind washing of insulation in the eaves of vented attics and how to prevent it.

Guide describing how to install outdoor air intakes and connect them to the return side of the HVAC system, using controls installed to operate intermittently & automatically based on a timer and to restrict intake when not in use (e.g., a motorized damper).

Guide describing how to install an efficient kitchen exhaust fan.

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.