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Wrong - Lack of insulation in the wall above this window combined with poor bathroom ventilation has contributed to mold growth.

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Wrong - Poor ventilation has encouraged the build up of mold in this shower.

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Wrong - Cold spots along the top plate combined with lack of ventilation have encouraged mold growth along this bathroom ceiling.

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Pre-Retrofit Assessment of Ventilation Systems

Information Guide

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

Whole-House Ventilation Strategies for New Homes

Guide

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