---
title: "Window Foam — $266K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/tools-home-improvement/window-foam"
last_updated: "2026-08-05T21:29:07.318Z"
locale: en
meta:
description: "Niche score 58/100 · $266K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 58/100 · $266K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Window Foam — $266K/yr Amazon US Niche (2026) - Flapen"
---
# **window foam**
**Worth a look**
Shows 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.
Market size 49Growth 48Conversion 78Competition 79Returns 63Price range 29Avg price 31Brand share 75Review moat 40Quality gap 52
**Competition**
**Great****36%**
top-5 click share — an open shelf
**Conversion**
**Great****7.6%**
search→purchase rate — share of searches ending in a sale
**Brand share**
**Great****60%**
top-5 brand share — no brand owns this niche
**Returns**
**Good****2.5%**
return rate — above 5% kills the launch gate
**Quality gap**
**Good****4.4★**
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**
**Okay****2,469.73**
avg incumbent reviews — the moat a new listing must climb
**Avg price**
**Okay****$9.73**
avg listing price — sweet spot $15–$100
**Price range**
**Okay****$2.87–$19.88**
cheapest 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 ~~](https://flapen.com/research/methodology)
## **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.
9K7KSpike '24Black Friday '24Holiday '24Spike '25Black Friday '25Holiday '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: May, Jun · busiest ÷ quietest = 2.5×
[**Open Trend **](https://flapen.com/research/us/tools-home-improvement/window-foam/trend)
## **Top window foam search terms**
- **foam weather stripping**59K/yr+19.7%7.9% conv. - **rubber seal strip**45K/yr+19.3%1.9% conv. - **foam insulation tape**30K/yr+3.5%6.0% conv. - **frost king weather stripping**31K/yr-15.9%6.5% conv. - **foam strip**23K/yr+1.7%4.6% conv. - **foam weather stripping tape**18K/yr+31.8%8.7% conv. - **window gap filler**20K/yr+15.5%2.7% conv. - **foam tape weather stripping**12K/yr+96.3%6.8% conv. - **window insulation foam**20K/yr+23.3%5.7% conv. - **foam window seal**14K/yr+30.3%7.1% conv. [**All search terms **](https://flapen.com/research/us/tools-home-improvement/window-foam/search-terms)
## **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.
0%3%$8K6%$16K9%$24K12%$32K1001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 24 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Frost King R338H Self-Stick Rubber Foam Weatherseal 3/8W 3/16T Black|Blacks**Frost King**$2.88**4.2★2,455 rev](https://www.amazon.com/dp/B000BQWWF4) [2**Frost King R734H Sponge Rubber Foam Tape 3/4 W X 7/16 H X 10 L Black**Frost King**$5.30**4.5★5,044 rev](https://www.amazon.com/dp/B0000CBIFD) [3**Bantie 33FT EVA Foam Weather Stripping Door Seal Self-Adhesive Weatherstrip Tape for Door Frame Window Gaps Soundproof Insulation**Bantie**$9.59**4.5★805 rev](https://www.amazon.com/dp/B0F5B2KX77) [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**$6.54**4.4★2,111 rev](https://www.amazon.com/dp/B0DMRJZMRY) [5**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**$5.85**4.4★2,111 rev](https://www.amazon.com/dp/B0BNWQM45L)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Bantie 33FT EVA Foam Weather Stripping Door Seal Self-Adhesive Weatherstrip Tape for Door Frame Window Gaps Soundproof Insulation**Bantie**$9.59**805 rev1y ago](https://www.amazon.com/dp/B0F5B2KX77) [**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**$14.96**214 rev1y ago](https://www.amazon.com/dp/B0DT6Q2KRG) [**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**$7.42**957 rev1y ago](https://www.amazon.com/dp/B0DMZZ3WR9) [**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**$6.43**957 rev1y ago](https://www.amazon.com/dp/B0DN13XWR5) [**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**$6.54**2,111 rev1y ago](https://www.amazon.com/dp/B0DMRJZMRY)
**~~View all new products →~~**
### **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**$15.53**4.4★**▲ 170%**](https://www.amazon.com/dp/B08DDH6YKR) [**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**$14.96**4.4★**▲ 157%**](https://www.amazon.com/dp/B0DT6Q2KRG) [**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**$6.54**4.4★**▲ 84%**](https://www.amazon.com/dp/B0DMRJZMRY) [**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**$15.52**4.6★**▲ 56%**](https://www.amazon.com/dp/B07VCRNHP1) [**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**$7.33**4.4★**▲ 37%**](https://www.amazon.com/dp/B0CW6CMXC8)
**~~View all trending →~~**
## **What buyers say about window foam**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Adhesion/Stickiness**18%
*“Excellent adhesion”*
**Quality-Overall**14%
*“Great product and it actually works as intended”*
**Advertised Vs Actual Product**11%
*“As advertised”*
**Ease Of Use**11%
*“Easy to apply”*
**Efficiency**7%
*“worked well”*
**Assembly/Installation**7%
*“Installed and works as intended”*
**Value For Money**6%
*“Good value for money”*
**Size-Overall**5%
*“It fits my door just right”*
**Thickness**3%
*“The foam has a nice thickness to it”*
**Durability**2%
*“Thick and durable”*
### **What buyers complain about **
**Adhesion/Stickiness**35%
*“Bad adhesive”*
**Quality-Overall**7%
*“Poor Quality Control”*
**Functionality-Overall**6%
*“Not effective”*
**Thickness**6%
*“Too thick for most windows and doors”*
**Advertised Vs Actual Product**5%
*“False Advertising”*
**Durability**4%
*“doesnt last”*
**Value For Money**3%
*“Poor price to performance”*
**Size-Overall**3%
*“Smaller than expected”*
**Noise Level**2%
*“Now my door makes no sound”*
**Ease Of Use**2%
*“Hard to use”*
### **Top return reasons **
**Size-Overall**40%
**Adhesion/Stickiness**15%
**Thin**9%
**Thickness**8%
**Advertised Vs Actual Product**5%
**Functionality-Overall**5%
**Value For Money**4%
**Compatibility-Overall**3%
**Material Quality**2%
**Color**1%
## **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.
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