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Fiberglass Insulation - Insulating the Envelope

Fiberglass insulation is used to control temperature and sound. Fiberglass generally comes in batts and blankets that range in R-value from R-11 to R-38. Loose-fill fiberglass can be blown into attic spaces to almost any R-value. Fiberglass, which is made primarily from sand and glass, and related products such as mineral wool (minerals) and slag wool (iron ore) are non-combustible and do not wick-up water. These products will return to their original R-value after drying. Mineral and slag wool do not support the growth of mold and mildew.

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Overview and Insulating Ceilings

An overview of proper installation techniques for fiberglass insulation in attics and ceilings. Part One. An overview of proper installation techniques for fiberglass insulation in attics and ceilings. Part One.

Ceiling Insulation Details

An overview of proper installation techniques for fiberglass insulation in attics and ceilings. Part Two.

Installing Ductboard

Insulated ductboard, how it works, how to properly fabricate and an overview of proper sealing techniques. Insulated ductboard, how it works, how to properly fabricate and an overview of proper sealing techniques.

Insulating Walls

The importance of proper wall insulation installation details. A step-by-step guide. Part One. The importance of proper wall insulation installation details. A step-by-step guide. Part One.

Wall Insulation Details

The importance of proper wall insulation installation details. A step-by-step guide. Part Two.

* The California Energy Commission does not endorse any products, features or manufacturers. The videos and text on this website are not meant to be all-inclusive. Every effort has been made to provide accurate information in the text and videos. If discrepancies exist between the text/videos and the Energy Efficiency Standards for Residential and Nonresidential Buildings (Standards), the Standards shall take precedence.