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Deal.ai › Sealtech › Glass Wool Insulation
Sealtech
Sealtech Reflective Insulation

Sealtech Reflective Insulation

Best price now

$52.94at The Home DepotChecked 3 min ago

Compared across 2 stores. Prices are checked against each store and labelled with when. Store links may earn us a commission. Price via Klarna.

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Price facts

  • Best price today: $52.94 at The Home Depot (checked Nov 11, 2026).
  • Checked at 2 stores.

Our take on the Sealtech Reflective Insulation

Sealtech Reflective Insulation is a 48 in x 10 ft roll of closed-cell polyethylene foam faced with a reflective layer that reflects up to 95% of radiant energy. It is a thin, flexible wall product, not a glass wool batt, so it installs without the itch and bulk of mineral wool. It suits garages, sheds, basements and interior walls where you want a radiant barrier plus a little foam insulation in one layer. Against fiberglass batts it reflects radiant heat better but adds far less R-value per inch, so it works best as a supplement or in mild climates.

Best forGarages, sheds and workshopsBasement and interior wall liningsDIYers who want a no-itch, easy-cut materialAdding a radiant barrier behind or over existing insulation
Pros
  • Reflects up to 95% of radiant energy
  • Thin, light and easy to cut with a knife
  • Closed-cell polyethylene foam resists moisture
  • No fiberglass itch or dust during install
  • Roll covers 40 sq ft at 48 in wide
Cons
  • Low R-value compared with glass wool batts
  • Foam alone does not stop conductive heat loss
  • Reflective face needs an air gap to work well
  • Thin 3 mm foam dents and tears easily
  • Not a direct substitute for code-required wall insulation

Sealtech Reflective Insulation prices at every store

  • The Home DepotNew

    In stock

    $52.94Free shippingChecked 3 min ago
    Visit The Home Depot
  • Tractor Supply CoNew

    In stock

    $42.29+ $13.99 shippingChecked 3 min ago
    Visit Tractor Supply Co

Store links may earn us a commission. Some prices via Klarna.

Sealtech Reflective Insulation price history

Lowest price we've seen: $42.29 on Nov 11 at Tractor Supply Co. Tracked across 2 stores since Nov 11.

About the Sealtech Reflective Insulation

Sealtech Reflective Insulation is a foam insulation roll for use on walls. It has a core of 100% virgin polyethylene foam and reflects 95% of radiant energy.

The roll measures 48 inches wide by 10 feet long and is 0.11811 inches thick.

Area of use
Wall
Material
Foam
Core material
100% virgin polyethylene foam
Size
48 in x 10 ft
Width
48 in
Roll length
10 ft
Thickness
0.11811 in
Radiant energy reflected
95%

Specifications

Area of Use
WallSource
Roll Length
10 ftSource
Size
48 in x 10 ftSource
Width
48 inSource
Thickness
0.11811 inSource
Material
FoamSource
Core Material
100% Virgin Polyethylene foamSource

Questions and answers

Is this the same as glass wool insulation?
No. It is closed-cell polyethylene foam with a reflective face, not mineral wool. It reflects radiant heat but adds much less thermal resistance than a glass wool batt of the same thickness.
What R-value does it add?
The foam is about 3 mm thick, so its conductive R-value is small. Treat it as a radiant barrier and vapor-retarding layer, not as a stand-alone wall insulation.
Where should I install it?
It is made for walls. Common uses are garage walls, basement walls and interior partitions. The reflective face works best with an air gap facing the open space.
How much area does one roll cover?
One roll is 48 in wide and 10 ft long, about 40 sq ft. Measure your wall area and add a little for cuts and overlaps.
Can I put it over existing fiberglass?
Yes, it is often used as a reflective facing over or behind existing batts. Keep the shiny side toward the air space and tape the seams for a continuous barrier.
Does it need a vapor barrier?
The polyethylene foam resists moisture, but seams and edges must be sealed with foil tape to act as a barrier. Check local code for wall assemblies.
Where is the Sealtech Reflective Insulation cheapest?
At The Home Depot, for $52.94, as of our latest check.
Where can I buy the Sealtech Reflective Insulation?
2 stores we checked sell it, including Tractor Supply Co, The Home Depot.

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