This paper describes a builder’s guide to reducing mold risk. The guide was developed as a part of a 30-month program sponsored by the California Energy Commission’s Public Interest Energy Research program and the Gas Research Institute to conduct a detailed investigation of residential building construction practices and innovative building assemblies that are resistant to mold formation and growth. The guide emphasizes a three-part strategy to reduce mold risk. The strategy is based on the history of mold problems in California buildings. The three-part strategy is applied to the development, design, installation, and ownership phases of residential construction. The discussion includes recommendations, supporting data, and references to other guideline information pertinent to mold-resistant construction.

Units: Dual