Products & Detailed Installation Instructions

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Insulating your Attic? Find how much insulation you’ll need and how much energy you’ll save.

Insulating Your Crawlspace

The walls in a heated crawlspace with uninsulated ducts or water pipes should be insulated. For crawlspace walls, use R-19 unfaced insulation in rolls or batts, or maximize your energy efficiency with R-21.

Crawlspace Walls

The walls in a heated crawlspace with uninsulated ducts or water pipes should be insulated. For crawlspace walls, use R-19 unfaced insulation in rolls or batts, or maximize your energy efficiency with R-21.

Crawlspace Floors

A lot of energy can leak through the floor, so it’s important to insulate it correctly. R-19 unfaced fiberglass rolls or batts can be installed in floor applications, or maximize your energy efficiency with R-21.

Unfaced Insulation

Unfaced insulation has no foil- or paper-faced vapor retarder.

Rolls

Rolls are long strips of insulation rolled into bales. You measure the length you need and cut it off with a utility knife. Rolls are best for covering large open areas, like attics and floors.

Batts

Batts are pre-cut lengths of fiberglass insulation. Batts are available unfaced, or with aluminum foil or paper facing.

Measure the Area of your Crawlspace Walls

To determine the amount of insulation your crawlspace walls need, follow these steps:

  1. Measure the height and the length or perimeter of each of the crawlspace walls. Don’t forget to measure the width of the space between the joists (this will be either 15"–16" or 23"–24"), so you’re sure which products to choose.
  2. Multiply the crawlspace height by the crawlspace length or perimeter:

    Example:

    4 ft. High
    × 150 ft. Long
    = 600 sq. ft. of Crawlspace Wall

Measure the Area of your Crawlspace Floors

To determine the amount of insulation you need for your floors, follow these steps:

  1. Measure the length of the floor joists you want to insulate. Don’t forget to measure the width of the space between the joists (this will be either 15”–16” or 23”–24”), so you’re sure which products to choose.
  2. Multiply the number of floor joists times the length of those joists:

    Example:

    5 Joists
    × 20 ft. Long
    = 100 sq. ft. of Floor Area

The following products are recommended for use with crawlspaces:

Product availability may vary depending on your location. For the most accurate availability information, choose a store near you.

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4 items found

Product Coverage (ft.2) Product Image Quantity

Owens Corning EcoTouch™ R19 Unfaced 6 ¼ in x 15 in x 93 in Batts in Bag Insulation

R-19 Unfaced Insulated Batt. Batts are 93 inches long, 15 inches wide, and 6 ¼ inches thick. Square feet = 48.96.
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Product Details

Product Image
  • Name: Owens Corning EcoTouch™ R19 Unfaced 6 ¼ in x 15 in x 93 in Batts in Bag Insulation
  • SKU: 595103
  • Length: 93.000
  • Width: 15.000
  • Coverage (ft2): 48.96
  • Thickness: 6.250
  • R-Value: 19.00
  • Description:

    R-19 Unfaced Insulated Batt. Batts are 93 inches long, 15 inches wide, and 6 ¼ inches thick. Square feet = 48.96.
  • View This Product at The Home Depot
48.96 Product Image

Owens Corning EcoTouch™ R19 Unfaced 6 ¼ in x 23 in x 93 in Batts in Bag Insulation

R-19 Unfaced Insulated Batt. Batts are 93 inches long, 23 inches wide, and 6 ¼ inches thick. Square feet = 75.07.
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Product Details

Product Image
  • Name: Owens Corning EcoTouch™ R19 Unfaced 6 ¼ in x 23 in x 93 in Batts in Bag Insulation
  • SKU: 568825
  • Length: 93.000
  • Width: 23.000
  • Coverage (ft2): 75.07
  • Thickness: 6.250
  • R-Value: 19.00
  • Description:

    R-19 Unfaced Insulated Batt. Batts are 93 inches long, 23 inches wide, and 6 ¼ inches thick. Square feet = 75.07.
  • View This Product at The Home Depot
75.07 Product Image

Owens Corning EcoTouch™ R19 Unfaced 6 ¼ x 15 in x 39 ft 2 in Continuous Roll Insulation

R-19 Unfaced Insulated Roll. Rolls are 39 feet 2 inches long, 15 inches wide, and 6 ¼ inches thick. Square feet = 48.96.
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Product Details

Product Image
  • Name: Owens Corning EcoTouch™ R19 Unfaced 6 ¼ x 15 in x 39 ft 2 in Continuous Roll Insulation
  • SKU: 543558
  • Length: 468.000
  • Width: 15.000
  • Coverage (ft2): 48.96
  • Thickness: 6.250
  • R-Value: 19.00
  • Description:

    R-19 Unfaced Insulated Roll. Rolls are 39 feet 2 inches long, 15 inches wide, and 6 ¼ inches thick. Square feet = 48.96.
  • View This Product at The Home Depot
48.96 Product Image

Owens Corning EcoTouch™ R19 Unfaced 6 ¼ x 23 in x 39 ft 2 in Continuous Roll Insulation

R-19 Kraft-faced Insulated Roll. Rolls are 39 feet 2 inches long, 23 inches wide, and 6 ¼ inches thick. Square feet = 74.75.
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Product Details

Product Image
  • Name: Owens Corning EcoTouch™ R19 Unfaced 6 ¼ x 23 in x 39 ft 2 in Continuous Roll Insulation
  • SKU: 565260
  • Length: 468.000
  • Width: 23.000
  • Coverage (ft2): 74.75
  • Thickness: 6.250
  • R-Value: 19.00
  • Description:

    R-19 Kraft-faced Insulated Roll. Rolls are 39 feet 2 inches long, 23 inches wide, and 6 ¼ inches thick. Square feet = 74.75.
  • View This Product at The Home Depot
74.75 Product Image

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Installation Tips

  • Caulk and seal around the band joist and all other penetrations, such as plumbing, electrical lines, cable lines, and HVAC and dryer vents, to prevent air infiltration.
  • Compressing insulation reduces its R-value. So when you’re working around pipes, wiring, electrical boxes and heating ducts, the insulation must be gently fitted around them. There should be no gaps or spaces between insulation pieces. These are places where energy would be lost for the life of the house. Measure and cut insulation and fit it into the band joist (area above the foundation wall).
  • Insulation should cascade down the walls and extend 2' along the ground. Affix long furring strips or cap nails to the sill to hold the insulation in place. Pre-nail the furring strip for easy installation. You can minimize compressing your insulation by only driving the nails part way into the plate.
  • After the insulation has been installed, spread a 4- or 6-mil polyethylene vapor retarder across the entire ground and under the insulation. Set rocks or bricks on top of the insulation extending out on to the floor to keep it in place.
  • Once you have the insulation in place between the floor joists, use insulation hangers or nylon straps to hold the product in place.