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Reflects heat downward
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Reflects heat upward
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Quick, easy installation
Double Bubble reflective insulation for floor joists and wall studs
Whether you're looking to add insulation between joists, directly on top of joists, or between wall studs, EcoFoil has a solution to fit your needs. EcoFoil Between Joist Insulation is perfect for those small spaces between floor joists and studs in crawl spaces or basements. With pre-cut widths of 16" or 24" available, reflective insulation rolls are lightweight and easy to handle and fit perfectly between standard floor joists and wall studs.
Reflects radiant heat back to its source
Between Joist Insulation is an effective way to reflect heat back into your basement in the winter months. Whether your heat source is upstairs, downstairs, or both, installing reflective insulation is a great way to save money on energy bills year round.
Floor Joist Insulation - 16" x 125' (166.63 sq. ft.)
Reflects heat and controls condensation in extreme/colder climates
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Recommended products: Between Joist Insulation
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Floor Joist Insulation - 16" x 125' (166.63 sq. ft.)
Free Shipping!Regular price $89.00Regular priceUnit price perSold out -
Floor Joist Insulation - 24" x 125' (250 sq. ft.)
Free Shipping!Regular price $129.00Regular priceUnit price per
Quick, clean, and easy
Reflective Joist Insulation features a tabbed edge that runs along both sides, which allows you to staple the tabs against the joists/studs for a quick and clean installation. Installing EcoFoil Between Joist Insulation will not only insulate those tight spaces, it also provides a moisture vapor barrier and prevents cool, damp air from invading the floor above.
What you'll need for installation:
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Scissors/utility knife
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Staple gun (3/4" staples)
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1–2 people
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Insulation Tape (to seal seams)
Floor Joist Insulation Installation Instructions:
Floor Joist Insulation, Between Joists
Download Instructions (PDF)Floor Joist Insulation, Under Joists
Download Instructions (PDF)Wall Joist Insulation, Between Joists (no fiberglass)
Download Instructions (PDF)Wall Joist Insulation, Between Joists (combined w/ fiberglass insulation)
Download Instructions (PDF)Floor Joist Insulation
Why use EcoFoil Floor Joist Insulation?
- Reflects 96% of radiant heat - Find out how a radiant barrier works
- Works in both warm and cold climates
- Installs easily
- Lightweight and easy to handle
- Versatile enough to fit between joists/studs or attach directly
- Very durable and can't be ripped or torn by hand
- Safe to handle and requires no special clothing or breathing equipment
More About EcoFoil Joist Insulation
15% or more of a buildings total heat loss can be attributed to an inadequately insulated crawl space. Our between joist insulation is constructed with a double layer of polyethylene bubbles bonded between two layers of radiant barrier. The double bubble layer creates a thermal break, while the foil blocks and reflects 96% of radiant heat away from your home in the summer, and back into your home in the winter – thus working effectively in both hot and cold climates.