Is this the right thickness for my window gap?

Measure the gap first. This roll is 7/16 in thick and compresses to about 3/16 in, so it suits wide gaps. For gaps under 3/16 in, use a thinner foam.

Will it stick to a painted or metal frame?

Yes, if the surface is clean, dry, and above roughly 50°F. Wipe off dust and grease first; adhesion drops on rough or dirty surfaces.

Can I use it on a car or boat?

Yes. Frost King lists automotive and marine use, and the closed-cell rubber resists water. Avoid hot engine or exhaust areas, since the foam is rated to 135°F.

How much does one roll cover?

The roll is 10 ft long and 3/4 in wide. That is enough for several average windows or one door frame, depending on the perimeter you seal.

Is $6.98 a good price?

It is the best new price among the two stores listing it as of November 4, 2026. Foam weatherstrip is a low-cost item, so buy when you need it rather than waiting for a drop.

Where can I buy the Frost King Self-Adhesive Closed-Cell Foam Sheet?

2 stores we checked sell it, including Lowe's, Ring's End.

Frost King Self-Adhesive Closed-Cell Foam Sheet

Best price now

$6.98at Lowe'sObserved at 3:18 PM

Compared across 2 stores. Prices are checked against each store and labelled with when.

Visit Lowe's

Frost King Self-Adhesive Closed-Cell Foam Sheet

Best price now

$6.98at Lowe'sObserved at 3:18 PM

Compared across 2 stores. Prices are checked against each store and labelled with when.

Visit Lowe's

Ask our agent about this product

It checks today's price at every store, compares the alternatives and answers in about a minute.

Our take on the Frost King Self-Adhesive Closed-Cell Foam Sheet

Frost King's self-adhesive closed-cell rubber foam weatherstrip is a 10-ft roll, 3/4 in wide and 7/16 in thick, meant to seal wide gaps around windows, doors, and vehicle or boat openings. It compresses to fill gaps from about 7/16 in down to 3/16 in and sticks on without tools. The best new price is $6.98 at Lowe's as of November 4, 2026, with two stores listing it new. That is a low-cost consumable, so the price matters less than getting the right thickness for your gap.

Best forSealing wide gaps around window frames and sashesDrafty doors with uneven or large gapsAutomotive and marine hatch or panel sealingRenters who want a peel-and-stick fix with no tools

Pros

Closed-cell rubber foam resists moisture better than open-cell sponge
Fills wide gaps from 7/16 in down to 3/16 in
Peel-and-stick backing needs no tools
10-ft roll covers several windows or one door frame
5-year limited warranty

Cons

7/16 in thickness is too bulky for narrow gaps under 3/16 in
Adhesive can lift on dusty, oily or cold surfaces
Rubber foam is not the best choice for heavy door slam wear
Only rated to 135°F, so keep it away from hot surfaces

Frost King Self-Adhesive Closed-Cell Foam Sheet prices at every store

Lowe'sNew
In stock
$6.98+ $5.99 shippingObserved at 3:18 PM
Visit store
Ring's EndNew
Availability unknown
$7.99+ $9.99 shippingObserved at 3:17 PM
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Frost King Self-Adhesive Closed-Cell Foam Sheet price history

Lowest price we've seen: $6.98 on Nov 4 at Lowe's. Tracked across 2 stores since Nov 4.

What reviewers say

Buyers rate this weatherstrip around 4 stars and use it for windows, doors, and vehicle sealing. Most praise the easy peel-and-stick install and the thick foam that closes large gaps; complaints center on adhesive that lets go over time.

Pros

Sticks well on clean, dry surfaces
Thick foam closes big, uneven gaps
Easy to cut to length with scissors
Good value for the length of the roll

Cons

Adhesive fails on dusty or painted surfaces
Foam can tear when pulled off
Too thick for small gaps

From Lowe's

Rubber foam self-stick weatherseal for doors and windows
Minimum compression
Fills wide gaps from 7/16-in down to 3/16-in
Ideal for automotive and marine use
4-star rated product
500+ bought last week

Materials: Rubber foam
Fit: Fills wide gaps from 7/16-in down to 3/16-in
Care: For best results, ensure surfaces are completely dry and free of dust, grime or grease; install while temperatures are roughly between 40 and 90 degrees Fahrenh
Guarantee: 5 Year guarantee
Returns: FREE Returns — return it in store or ship it back for free; eligibility rules apply

About the Frost King Self-Adhesive Closed-Cell Foam Sheet

10-ft x 3/4-in x 7/16-in Black Rubber foam Window Weatherstrip

Specifications

Material: 橡胶Source
Color: 黑色//白色Source
Item Length: 3.05 米Source

Questions and answers

Is this the right thickness for my window gap?: Measure the gap first. This roll is 7/16 in thick and compresses to about 3/16 in, so it suits wide gaps. For gaps under 3/16 in, use a thinner foam.
Will it stick to a painted or metal frame?: Yes, if the surface is clean, dry, and above roughly 50°F. Wipe off dust and grease first; adhesion drops on rough or dirty surfaces.
Can I use it on a car or boat?: Yes. Frost King lists automotive and marine use, and the closed-cell rubber resists water. Avoid hot engine or exhaust areas, since the foam is rated to 135°F.
How much does one roll cover?: The roll is 10 ft long and 3/4 in wide. That is enough for several average windows or one door frame, depending on the perimeter you seal.
Is $6.98 a good price?: It is the best new price among the two stores listing it as of November 4, 2026. Foam weatherstrip is a low-cost item, so buy when you need it rather than waiting for a drop.
Where is the Frost King Self-Adhesive Closed-Cell Foam Sheet cheapest?: At Lowe's, for $6.98, as of our latest check.
Where can I buy the Frost King Self-Adhesive Closed-Cell Foam Sheet?: 2 stores we checked sell it, including Lowe's, Ring's End.