Floor Insulation

Insulating the floor over a crawl space requires taking into consideration moisture control (both over the ground and as to the insulation) and whether you have a vented or unvented crawl space. (Unvented crawl spaces may require insulation of the perimeter instead.)

Moisture control requirements will depend on your property and climate and should be evaluated by a contractor. Floor insulation also requires air sealing of the floor before installing insulation. (Energy Savers)

To check if there are any incentives or rebates available for this product in your area, please visit the Database of State Incentives for Renewables and Efficiency (DSIRE).

Minimum Requirements

  1. Under-floor insulation must be installed with R-value ≥ 19 to full joist depth.
  2. Insulation must be installed per Title 24 Quality Insulation Installation standards.