Discusses materials and systems for reducing or eliminating air infiltration through identified leakage sources. Methods include caulking, adhesive/glass mat, weatherstripping, vent dampers etc. Gives recommended procedure for treating new and existing construction by pressurizing the building to detect air leaks, then retrofitting to reduce leakage. Cost effectiveness of the methods has not been reliably measured but the evidence suggests that many air infiltration reduction materials are highly cost effective. Gives bibliography of 233 citations.
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