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Work of Weatherizing Buildings
Building Envelope, Part 1: Air Seal
Building Envelope, Part 2: Insulating

Insulation versus Air Flow

Insulation Options

Safety Risks Review

Insulating Walls

Insulating Ceilings and Attics

Insulating Raised Floors

Insulating Crawlspaces/ Basements
Weatherizing Mobile Homes
Base Load Measures
HVAC and Ductwork
Building Performance Institute Inc.

Insulating Raised Floors

Insulating raised floors, like those found in crawlspaces, not only helps to keep the heat in the living area, but can provide heat transfer protection to pipes as well as heating and cooling ducts. In vented crawlspaces it is oftentimes more cost-effective to insulate between the floor joists than it is to insulate the foundation walls. If the choice has been made to insulate between the floor joists in the crawlspace, the process can be pretty quick and easy, but care must be taken to make sure the insulation is secured properly and the venting strategy of the zone is respected.

After completing this lesson, students will be able to:

  • Understand the relative importance of insulating raised floors
  • Choose the best materials to use
  • Know how to insulate raised floors
  • Comprehend the importance of proper air sealing and vapor barriers prior to installation


Watch our example videos for this lesson by clicking on the link(s) below:
Insulating Raised Floors

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