window foam
Worth a lookShows a fragmented shelf (top 5 take 36% of clicks), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Competition
Great36%top-5 click share — an open shelf
Conversion
Great7.6%search→purchase rate — share of searches ending in a sale
Brand share
Great60%top-5 brand share — no brand owns this niche
Returns
Good2.5%return rate — above 5% kills the launch gate
Quality gap
Good4.4★avg incumbent rating — lower means beatable quality
Market size
Okay$266K$266K/yr · 357K searches
Growth
Okay+18.0%90-day search growth — must beat 0% to launch
Review moat
Okay2,469.73avg incumbent reviews — the moat a new listing must climb
Avg price
Okay$9.73avg listing price — sweet spot $15–$100
Price range
Okay$2.87–$19.88cheapest to priciest tracked listing — scored on the share inside $15–$100
According to Flapen's Amazon United States niche tracking, window foam is a $266K/yr Amazon United States market (357K searches/yr). The top 5 brands hold 60% of demand. Demand peaks in May–Jun. Verdict: Worth a look — 58/100.
Data updated Jul 27, 2026 · scored weekly · How we score niches
window foam market data
- Units sold / yr
- 25K–30K
- avg 500–750/product
- Revenue / yr
- $243K–$292K
- units × avg price
- Conversion rate
- 7.6%
- Avg BSR
- #49
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 90%
- Out of stock
- 0.5%
- Avg brand age
- 44 months
- Avg seller age
- 165 days
Competition & brand share
Clicks spread well past the top 5 (36% combined) — an open shelf where new products get seen.Brands
35 rising
Sellers
90
Top-5 brand share
60%
Top 20: 90%
Top-5 click share
36%
Top 20: 77%
Open market
36%
- Frost King24%
- Kikerike17%
- Bantie9%
- M-D Building Products5%
- Thermwell4%
- Trisiki4%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +18.0% search growth over the last 90 days.Peak months: May, Jun · busiest ÷ quietest = 2.5×
Top window foam search terms
- foam weather stripping59K/yr
- rubber seal strip45K/yr
- foam insulation tape30K/yr
- frost king weather stripping31K/yr
- foam strip23K/yr
- foam weather stripping tape18K/yr
- window gap filler20K/yr
- foam tape weather stripping12K/yr
- window insulation foam20K/yr
- foam window seal14K/yr
Top window foam products on Amazon
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
All 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Frost King R338H Self-Stick Rubber Foam Weatherseal 3/8W 3/16T Black|Blacks
Frost King$2.884.2★2,455 rev
Frost King R734H Sponge Rubber Foam Tape 3/4 W X 7/16 H X 10 L Black
Frost King$5.304.5★5,044 rev
Bantie 33FT EVA Foam Weather Stripping Door Seal Self-Adhesive Weatherstrip Tape for Door Frame Window Gaps Soundproof Insulation
Bantie$9.594.5★805 rev
Kikerike Self Adhesive Foam Tape Weatherstrip 1/2In x 1/4In x 16.5Ft High Density Foam Insulation Strips Seal Weather Stripping with Strong Adhesive for Door and Window Sound Isolation Soundproofing
Kikerike$6.544.4★2,111 rev
Kikerike Self Adhesive Foam Tape Weatherstrip 1/2In x 1/4In x 42Ft High Density Foam Insulation Strips Seal Weather Stripping with Strong Adhesive for Door and Window Sound Isolation Soundproofing
Kikerike$5.854.4★2,111 rev
Newest
by launch dateBantie 33FT EVA Foam Weather Stripping Door Seal Self-Adhesive Weatherstrip Tape for Door Frame Window Gaps Soundproof Insulation
Bantie$9.59805 rev
2Packs Air Conditioner Foam Tape with Adhesive 1X1X 6.5 Ft Window Weather Stripping High Resilience Ac Window Seal Kit Foam Insulation for Winter Summer (6.5ft X 2 Rolls Black)
Knightsacoustic$14.96214 rev
Kikerike Self Adhesive Foam Tape Weatherstrip 1/2In x 1/4In x 42Ft High Density Foam Insulation Strips Seal Weather Stripping with Strong Adhesive for Door and Window Sound Isolation Soundproofing
Kikerike$7.42957 rev
Kikerike Self Adhesive Foam Tape Weatherstrip 1/2In x 1/4In x 16.5Ft High Density Foam Insulation Strips Seal Weather Stripping with Strong Adhesive for Door and Window Sound Isolation Soundproofing
Kikerike$6.43957 rev
Kikerike Self Adhesive Foam Tape Weatherstrip 1/2In x 1/4In x 16.5Ft High Density Foam Insulation Strips Seal Weather Stripping with Strong Adhesive for Door and Window Sound Isolation Soundproofing
Kikerike$6.542,111 rev
Trending
90-day click momentum
Futuwi Air Conditioner Foam-2 Rolls 1 Inch Wide X 1 Inch Thick Total 13 Feet Long AC Foam Weather Stripping Insulation Tape for Face Shields Headband(6.5ft x 2 Rolls)
Futuwi$15.534.4★
2Packs Air Conditioner Foam Tape with Adhesive 1X1X 6.5 Ft Window Weather Stripping High Resilience Ac Window Seal Kit Foam Insulation for Winter Summer (6.5ft X 2 Rolls Black)
Knightsacoustic$14.964.4★
Kikerike Self Adhesive Foam Tape Weatherstrip 1/2In x 1/4In x 16.5Ft High Density Foam Insulation Strips Seal Weather Stripping with Strong Adhesive for Door and Window Sound Isolation Soundproofing
Kikerike$6.544.4★
Yotache Air Conditioner Window Seal Kit - 1x1 High Resilience Foam Weather Stripping Insulation Strip for AC Noise Reducing Air Leak Proof No Glue 13Ft Long (6.5Ft x 2 Rolls Black)
yotache$15.524.6★
Kikerike Self Adhesive Foam Tape Weatherstrip 1/2in x 1/4in x 16.5Ft High Density Foam Insulation Strips Seal Weather Stripping with Strong Adhesive for Door and Window Sound Isolation Soundproofing
Kikerike$7.334.4★
What buyers say about window foam
What buyers praise and complain about, mined from review topics.What buyers love
“Excellent adhesion”
“Great product and it actually works as intended”
“As advertised”
“Easy to apply”
“worked well”
“Installed and works as intended”
“Good value for money”
“It fits my door just right”
“The foam has a nice thickness to it”
“Thick and durable”
What buyers complain about
“Bad adhesive”
“Poor Quality Control”
“Not effective”
“Too thick for most windows and doors”
“False Advertising”
“doesnt last”
“Poor price to performance”
“Smaller than expected”
“Now my door makes no sound”
“Hard to use”
Top return reasons
Common questions
- Is window foam profitable to sell on Amazon United States?
- The niche generates $266K/yr across 51 tracked products. 3 of 3 products launched in the last 360 days are still selling. 90-day search growth is +18.0%. Flapen's verdict: Worth a look (58/100).
- How competitive is the window foam niche?
- 35 brands and 90 sellers compete. The top 5 products take 36% of clicks and top 5 brands hold 60% of demand.
- What do buyers complain about in window foam?
- Top complaints mined from reviews: Adhesion/Stickiness, Quality-Overall, Functionality-Overall. The return rate is 2.5%.
- When does demand for window foam peak?
- Demand peaks in May–Jun; the busiest month runs 2.5× the quietest.
- What does it cost to enter the window foam niche?
- Listings span $2.87–$19.88; the average listing price is $9.73 (sweet spot $15–$100). The average incumbent carries 2,470 reviews — the moat a new listing must climb.