---
title: "Expanding Foam — $618K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/tools-home-improvement/expanding-foam"
last_updated: "2026-08-05T21:29:01.820Z"
locale: en
meta:
description: "Niche score 63/100 · $618K/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 63/100 · $618K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Expanding Foam — $618K/yr Amazon US Niche (2026) - Flapen"
---
# **expanding foam**
**Worth a look**
Shows low returns (0.1%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size 65Growth 51Conversion 83Competition 43Returns 100Price range 86Avg price 93Brand share 36Review moat 25Quality gap 75
**Returns**
**Incredible****0.1%**
return rate — above 5% kills the launch gate
**Avg price**
**Great****$22.06**
avg listing price — sweet spot $15–$100
**Price range**
**Great****$6.32–$87.04**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Conversion**
**Great****9.0%**
search→purchase rate — share of searches ending in a sale
**Quality gap**
**Great****4.3★**
avg incumbent rating — lower means beatable quality
**Market size**
**Good****$618K**
$618K/yr · 311K searches
**Growth**
**Good****+21.9%**
90-day search growth — must beat 0% to launch
**Competition**
**Okay****59%**
top-5 click share — leaders hold, buyers still browse
**Brand share**
**Okay****84%**
top-5 brand share — brands hold most of the demand
**Review moat**
**Bad****4,058.96**
avg incumbent reviews — the moat a new listing must climb
According to Flapen's Amazon United States niche tracking, expanding foam is a $618K/yr Amazon United States market (311K searches/yr). The top 5 brands hold 84% of demand. Demand peaks in Oct. Verdict: Worth a look — 63/100.
Data updated Jul 27, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **expanding foam market data**
- **Units sold / yr**
- **25K–30K**
- avg 1,500–2,000/product
- **Revenue / yr**
- **$552K–$662K**
- units × avg price
- **Conversion rate**
- **9.0%**
- **Avg BSR**
- **#31**
- **Page quality**
- **0%**
- **Prime**
- **92%**
- **Sponsored**
- **79%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **61 months**
- **Avg seller age**
- **175 days**
## **Competition & brand share**
The top 5 products take 59% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**13 **▲rising
**Sellers**
**128**
**Top-5 brand share**
**84%**
Top 20: 100%
**Top-5 click share**
**59%**
Top 20: 95%
**Open market**
**13%**
- Great Stuff36% - Loctite29% - Red Devil7% - KRAKEN BOND7% - Tomcat4% - DAP3% - Open — no brand owns it (7 brands, 13%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +21.9% search growth over the last 90 days.
7K5KSpike '24Prime Day '25 seasonSepDecMarJunAugNovMarMay
Peak months: Oct · busiest ÷ quietest = 1.6×
[**Open Trend **](https://flapen.com/research/us/tools-home-improvement/expanding-foam/trend)
## **Top expanding foam search terms**
- **expanding foam**215K/yr+17.0%5.9% conv. - **expandable foam**21K/yr+34.4%4.0% conv. - **expansion foam**15K/yr+27.5%6.2% conv. - **loctite foam**11K/yr+42.4%5.3% conv. - **loctite spray foam**11K/yr+44.8%4.6% conv. - **tite foam**9K/yr+26.8%5.4% conv. - **white spray foam**12K/yr+31.1%4.2% conv. - **loctite tite foam**7K/yr+64.7%4.9% conv. - **construction foam**6K/yr+6.8%4.7% conv. - **loctite foam gaps and cracks**3K/yr+63.1%6.9% conv. [**All search terms **](https://flapen.com/research/us/tools-home-improvement/expanding-foam/search-terms)
## **Top expanding 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%10%$62K20%$124K30%$185K40%$247K101001K10K100K 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**Great Stuff 99108824 Smart Dispenser Gaps & Cracks Cream 12 Ounce**Great Stuff**$8.16**4.5★9,263 rev](https://www.amazon.com/dp/B07GLG7B3Z) [2**Loctite Tite Foam Big Gaps Spray Foam Sealant 12 fl oz Can 1 Pack - Polyurethane Expanding Insulation**Loctite**$8.20**4.4★11,678 rev](https://www.amazon.com/dp/B07Q3WPB6B) [3**Loctite Tite Foam Gaps & Cracks Spray Foam Sealant 12 fl oz Can 1 Pack - Polyurethane Expanding Insulation**Loctite**$7.80**4.4★21,558 rev](https://www.amazon.com/dp/B01N21KQ4I) [4**Great Stuff 99112809 Smart Dispenser Pestblock Gray**Great Stuff**$10.54**4.3★4,809 rev](https://www.amazon.com/dp/B07GL5H78K) [5**Red Devil 0909 Spray Foam Fill Large Gaps & Cracks Expanding Insulation Polyurethane Foam Sealant 12 Oz Off White**Red Devil**$6.32**4.4★750 rev](https://www.amazon.com/dp/B000NHQVYO)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Loctite Tite Foam Big Gaps Bright White 12 oz Can Pack of 2 - High Density Insulating Foam Sealant for Gaps Up to 3 Inches Durable Flexible UV Resistant**Loctite**$20.68**11,678 rev5mo ago](https://www.amazon.com/dp/B0GP39Z3WN) [**Stanley F905 Gaps & Cracks Sealant (2x12 Oz.) Polyurethane Spray Foam Insulation for Window & Door Waterproof Gap Filler Low Expansion Foam for Indoor & Outdoor Use | Straw Use | 12 Oz. 2 Pack**STANLEY**$16.41**112 rev1y ago](https://www.amazon.com/dp/B0FDB98H9R) [**Stanley F993 PestBlocker Foam (2x12oz) Gaps & Cracks Filler Expanding Sealant Spray for Indoor/Outdoor Use Paintable Waterproof Polyurethane Insulation Foam with Straw Applicator | 2 Pack**STANLEY**$19.76**216 rev1y ago](https://www.amazon.com/dp/B0F4RGKYJM) [**DAP Wall and Cavity Foam with Wide Spray Applicator Aerosol Off White 20 oz. (7565000370)**DAP**$24.91**404 rev2y ago](https://www.amazon.com/dp/B0D9J13PTV) [**2 Quart Marine Flotation Foam Kit 2 lb Density Polyurethane Foam**Oycevila**$37.01**99 rev2y ago](https://www.amazon.com/dp/B0F66XK886)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Loctite Tite Foam Big Gaps Bright White 12 oz Can Pack of 2 - High Density Insulating Foam Sealant for Gaps Up to 3 Inches Durable Flexible UV Resistant**Loctite**$20.68**4.4★**▲ 223%**](https://www.amazon.com/dp/B0GP39Z3WN) [**Great Stuff 99112809 Smart Dispenser Pestblock Gray**Great Stuff**$10.54**4.3★**▲ 218%**](https://www.amazon.com/dp/B07GL5H78K) [**Sprayman Gaps and Cracks Filler Foam - Polyurethane Expanding Foam Sealant for Insulating Doors & Windows Waterproof & Paintable Straw Use - 12oz 2 Pack**SPRAYMAN**$15.85**4.2★**▲ 138%**](https://www.amazon.com/dp/B0D2Y7DWCC) [**Kraken Bond Gaps & Cracks Expanding Foam Sealant - (2x12oz) High Expansion Polyurethane Spray Foam for Window & Door Straw Use Waterproof High Yield Gap Filler - 2 Pack**KRAKEN BOND**$15.96**4.2★**▲ 84%**](https://www.amazon.com/dp/B0CKPZC9KL) [**2 Quart Marine Flotation Foam Kit 2 lb Density Polyurethane Foam**Oycevila**$37.01**4.5★**▲ 77%**](https://www.amazon.com/dp/B0F66XK886)
**~~View all trending →~~**
## **What buyers say about expanding foam**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Efficiency**15%
*“Works very well”*
**Quality-Overall**14%
*“One cannworked great”*
**Advertised Vs Actual Product**12%
*“As advertised”*
**Ease Of Use**11%
*“EASY to use”*
**Value For Money**9%
*“Good for price”*
**Stretchability/Expandability/Elasticity**6%
*“They expand so that is good”*
**Spray/Flow**4%
*“Works great, all cans sprayed perfectly”*
**Adhesion/Stickiness**2%
*“The adhesion is super strong”*
**Color**2%
*“Good color”*
**Ease Of Cleaning**2%
*“The can stays workable between sessions if you clean the straw — much better shelf life than competing foams”*
### **What buyers complain about **
**Spray/Flow**12%
*“Spray never worked like it was supposed to”*
**Functionality-Overall**9%
*“Didn't work”*
**Quality-Overall**8%
*“LOW QUALITY”*
**Adhesion/Stickiness**8%
*“sticky”*
**Ease Of Cleaning**6%
*“Very messy and impossible to clean up”*
**Leak-Proof**6%
*“Product leaked all over”*
**Value For Money**5%
*“Too expensive”*
**Color**5%
*“horrible color”*
**Ease Of Use**4%
*“Not easy to use”*
**Stretchability/Expandability/Elasticity**4%
*“doesn't expand as advertised”*
### **Top return reasons **
**Stretchability/Expandability/Elasticity**25%
**Advertised Vs Actual Product**19%
**Value For Money**12%
**Size-Overall**10%
**Functionality-Overall**7%
**Leak-Proof**5%
**Hard Feel**5%
**Foam**4%
**Instructions/User Manual/Troubleshooting**2%
**Defective Material/Parts**2%
## **Common questions**
- **Is expanding foam profitable to sell on Amazon United States?**
- The niche generates $618K/yr across 24 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is +21.9%. Flapen's verdict: Worth a look (63/100).
- **How competitive is the expanding foam niche?**
- 13 brands and 128 sellers compete. The top 5 products take 59% of clicks and top 5 brands hold 84% of demand.
- **What do buyers complain about in expanding foam?**
- Top complaints mined from reviews: Spray/Flow, Functionality-Overall, Quality-Overall. The return rate is 0.1%.
- **When does demand for expanding foam peak?**
- Demand peaks in Oct; the busiest month runs 1.6× the quietest.
- **What does it cost to enter the expanding foam niche?**
- Listings span $6.32–$87.04; the average listing price is $22.06 (sweet spot $15–$100). The average incumbent carries 4,059 reviews — the moat a new listing must climb.
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