Guides A-Z

Guide describing how to air seal bathroom and kitchen exhaust fans.

Guide describing how to install a bathroom fan to remove excess moisture, cleaning chemical fumes, etc.

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

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