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Deal.ai › Frost King
Frost King
Frost King Rubber Foam Weatherseal Insulation Sheet

Frost King Rubber Foam Weatherseal Insulation Sheet

Best price now

$2.93at AmazonChecked 10 h ago

27% under what the other stores charge

Compared across 4 stores. Prices are checked against each store and labelled with when. Store links may earn us a commission. As an Amazon Associate, Deal.ai earns from qualifying purchases.

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Price facts

  • Lowest price today: $2.93 at Amazon (checked Nov 14, 2026).
  • Checked at 4 stores.

Our take on the Frost King Rubber Foam Weatherseal Insulation Sheet

Frost King's rubber foam weatherseal is a self-stick strip that compresses to fill gaps from about 1 inch down to 1/4 inch. It is meant for sealing around doors, windows and other openings against drafts, water and insects. The expandable foam conforms to uneven gaps, which makes it more forgiving than rigid weatherstripping on warped or mismatched frames. It is a low-cost fix for drafty gaps, but foam compresses over time and is not a substitute for a solid door sweep or a full window replacement.

Best forSealing drafty door and window gapsFilling uneven or warped frame gapsBlocking insects and water at openingsQuick DIY weatherproofing
Pros
  • Self-stick backing installs without tools
  • Expands to conform to uneven gaps
  • Covers a wide range from 1 inch down to 1/4 inch
  • Resists weather and insects
  • Works on doors, windows and other openings
Cons
  • Foam compresses and loses seal over time
  • Adhesive can fail on dusty or damp surfaces
  • Not a permanent fix for large or structural gaps
  • Black foam is visible on light-colored frames

Frost King Rubber Foam Weatherseal Insulation Sheet prices at every store

  • Home DepotNew

    In stock

    $2.93Free shippingChecked 10 h ago
    Visit Home Depot
  • WalmartNew

    In stock

    $6.99+ $6.99 shippingChecked 10 h ago
    Visit Walmart
  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $2.93Checked 10 h ago
    Visit Amazon
  • Do it BestNew

    Availability unknown

    $3.99Checked 10 h ago
    Visit Do it Best

Also available at

  • Ace HardwareCheck price at Ace Hardware
  • Global IndustrialCheck price at Global Industrial
  • Grainger Industrial SupplyCheck price at Grainger Industrial Supply
  • Grange Co-opCheck price at Grange Co-op
  • Lowe'sCheck price at Lowe's
  • McCoy's Building SupplyCheck price at McCoy's Building Supply
  • TargetCheck price at Target
  • Tractor Supply CompanyCheck price at Tractor Supply Company

Store links may earn us a commission.

Frost King Rubber Foam Weatherseal Insulation Sheet price history

$16.58$2.93
Nov 4Nov 14

Lowest price we've seen: $2.93 on Nov 14 at Home Depot; highest $16.58 on Nov 4. Tracked across 12 stores since Nov 4.

From McCoy's Building Supply

  • Expandable self-stick weatherseal conforms to gaps
  • Creates a watertight seal
  • Fills gaps from 1 in down to 1/4 in
  • Weather and insect-resistant
  • Self-stick adhesive backing
  • Black foam weather seal
Fit
Fills gaps from 1 in down to 1/4 in
Returns
Free & Easy Returns in Store
Shipping
Ship to Store available; delivery available; free pickup at San Marcos

About the Frost King Rubber Foam Weatherseal Insulation Sheet

This Frost King weatherseal is a black rubber foam strip with a self-stick adhesive backing. It expands to conform to gaps and creates a watertight seal.

It fills gaps from 1 in down to 1/4 in. The foam is weather and insect resistant.

Material
Rubber foam
Color
Black
Gap size
Fills gaps from 1 in down to 1/4 in
Attachment
Self-stick adhesive backing
Resistance
Weather and insect resistant
Seal type
Expandable, watertight

Questions and answers

What gap sizes does it fill?
It is designed to fill gaps from about 1 inch down to 1/4 inch. The foam expands to conform to the gap.
Where can I use it?
Around doors, windows and other openings where drafts, water or insects get in. It suits uneven gaps that rigid strips do not seal well.
How does it attach?
It has a self-stick adhesive backing. Press it onto a clean, dry surface.
Is it a permanent fix?
No. Foam weatherseal compresses over time and may need replacing. For large or structural gaps, a door sweep or frame repair is more durable.
Does it work on metal or vinyl frames?
Yes, the adhesive sticks to most clean, dry surfaces, including wood, metal and vinyl. Clean the surface first for the best hold.
Where is the Frost King Rubber Foam Weatherseal Insulation Sheet cheapest?
At Amazon, for $2.93, 27% under what the other stores charge, as of our latest check.
Where can I buy the Frost King Rubber Foam Weatherseal Insulation Sheet?
12 stores we checked sell it, including Amazon, Home Depot, Do it Best, Walmart, Ace Hardware.

Stores we've priced the Frost King Rubber Foam Weatherseal Insulation Sheet at

  • Ace Hardware deals and prices
  • Grainger Industrial Supply deals and prices
  • Lowe's deals and prices
  • Target deals and prices
  • The Home Depot deals and prices
  • Tractor Supply Company deals and prices
  • Walmart deals and prices
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