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Unvented Conditioned Attic with Spray Foam Insulation Below Roof Deck

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

Below Deck Spray Foam Insulation for Existing Roofs

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.

Whole House Ventilation Strategies for Existing Homes

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

Managing Indoor Humidity and Ventilation in Cold Weather

Guide describing steps to take to minimize indoor humidity in preparation for cold winter weather.

Building Science Introduction - Air Flow

Information guide providing background information about air flow in residential buildings.

Pre-Retrofit Assessment of Ventilation Systems

Guide describing how to evaluate existing ventilations systems before performing home upgrades.

Whole-House Ventilation Strategies for New Homes

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