---
title: "Crack Filler — $1.3M/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/tools-home-improvement/crack-filler"
last_updated: "2026-08-07T11:07:45.876Z"
locale: en
meta:
description: "Niche score 52/100 · $1.3M/yr market. Brand-locked demand (top 5 brands take 100% of clicks) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 52/100 · $1.3M/yr market. Brand-locked demand (top 5 brands take 100% of clicks) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Crack Filler — $1.3M/yr Amazon US Niche (2026) - Flapen"
---
# **crack filler**
**Worth a look**
Shows low returns (0.0%), but brand-locked demand (top 5 brands take 100% of clicks) keeps it on the watch list.
Market size 82Growth 37Conversion 79Competition 18Returns 100Price range 47Avg price 95Brand share 0Review moat 31Quality gap 50
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Avg price**
**Incredible****$33.96**
avg listing price — sweet spot $15–$100
**Market size**
**Great****$1.3M**
$1.3M/yr · 462K searches
**Conversion**
**Great****8.1%**
search→purchase rate — share of searches ending in a sale
**Quality gap**
**Good****4.5★**
avg incumbent rating — lower means beatable quality
**Price range**
**Okay****$8.17–$189.38**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Growth**
**Okay****+9.3%**
90-day search growth — must beat 0% to launch
**Review moat**
**Okay****3,425.55**
avg incumbent reviews — the moat a new listing must climb
**Competition**
**Bad****79%**
top-5 click share — a locked-up shelf
**Brand share**
**Bad****100%**
top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, crack filler is a $1.3M/yr Amazon United States market (462K searches/yr). The top 5 brands hold 100% of demand. Verdict: Worth a look — 52/100.
Data updated Jul 28, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **crack filler market data**
- **Units sold / yr**
- **40K–50K**
- avg 3,000–4,000/product
- **Revenue / yr**
- **$1.4M–$1.7M**
- units × avg price
- **Conversion rate**
- **8.1%**
- **Avg BSR**
- **#37**
- **Page quality**
- **0%**
- **Prime**
- **73%**
- **Sponsored**
- **82%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **40 months**
- **Avg seller age**
- **158 days**
## **Competition & brand share**
The top 5 products capture 79% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**5 **▼falling
**Sellers**
**113**
**Top-5 brand share**
**100%**
Top 20: 100%
**Top-5 click share**
**79%**
Top 20: 100%
**Open market**
**0%**
- Great Stuff82% - DOW CHEMICAL9% - SPRAYMAN3% - Loctite3% - GREAT STUFF PRO3%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +9.3% search growth over the last 90 days.
10K6KSpike '24Prime Day '25Spike '26 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.6×
[**Open Trend **](https://flapen.com/research/us/tools-home-improvement/crack-filler/trend)
## **Top crack filler search terms**
- **great stuff spray foam**219K/yr+9.8%7.6% conv. - **gap filler**79K/yr+18.3%1.8% conv. - **great stuff**65K/yr+15.5%7.4% conv. - **great stuff gaps and cracks**19K/yr+10.7%9.3% conv. - **great stuff foam**18K/yr-3.8%5.2% conv. - **wall gap filler**10K/yr-1.8%0.2% conv. - **gap filler for wall**15K/yr-33.8%0.7% conv. - **gap sealer**6K/yr+24.4%1.0% conv. - **great stuff expanding foam**5K/yr+10.1%6.9% conv. - **great stuff gaps and cracks spray foam**3K/yr+91.5%8.1% conv. [**All search terms **](https://flapen.com/research/us/tools-home-improvement/crack-filler/search-terms)
## **Top crack filler 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%$127K20%$254K30%$382K40%$509K1001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 11 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**$8.22**4.5★9,283 rev](https://www.amazon.com/dp/B07GLG7B3Z) [2**Great Stuff 99112809 Smart Dispenser Pestblock Gray**Great Stuff**$10.41**4.3★4,828 rev](https://www.amazon.com/dp/B07GL5H78K) [3**DOW Chemical 157901 Great Stuff Expanding Spray Foam Sealant 12 oz - 441002**DOW CHEMICAL**$8.91**4.5★465 rev](https://www.amazon.com/dp/B008MG22DC) [4**Great Stuff Gaps and Cracks Insulating Foam Sealant 12 Ounce - Case of 12**Great Stuff**$51.32**4.7★814 rev](https://www.amazon.com/dp/B00CC2DNJY) [5**Great Stuff 99112849 Smart Dispenser Pond & Stone 12 oz Black**Great Stuff**$13.51**4.5★3,267 rev](https://www.amazon.com/dp/B07GL5MP2X)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Sprayman Pest Block Spray Foam - (2x12oz) 100% Odor-Free! Mouse - Rodent Repellent & Strong Polyurethane Mouse Blocker Foam Sealant Use Wall Foam Filler for Holes and Cracks Over Paintable- 2 Pack**SPRAYMAN**$24.11**645 rev2y ago](https://www.amazon.com/dp/B0CZ128K2J) [**Great Stuff 157911 Insulating Foam Sealant 20 Ounce Ivory (Pack of 2)**Great Stuff**$33.90**1,901 rev2y ago](https://www.amazon.com/dp/B081Z9D3V8) [**Loctite Tite Foam Big Gaps Spray Foam Sealant 12 fl oz Can 1 Pack - Polyurethane Expanding Insulation**Loctite**$8.17**11,732 rev7y ago](https://www.amazon.com/dp/B07Q3WPB6B) [**Great Stuff 99112876 Smart Dispenser Multipurpose Black 12 Oz.**Great Stuff**$10.77**2,326 rev7y ago](https://www.amazon.com/dp/B07JD35J14) [**Great Stuff 99108824 Smart Dispenser Gaps & Cracks Cream 12 Ounce**Great Stuff**$8.22**9,283 rev7y ago](https://www.amazon.com/dp/B07GLG7B3Z)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Great Stuff 99112849 Smart Dispenser Pond & Stone 12 oz Black**Great Stuff**$13.51**4.5★**▲ 132%**](https://www.amazon.com/dp/B07GL5MP2X) [**Sprayman Pest Block Spray Foam - (2x12oz) 100% Odor-Free! Mouse - Rodent Repellent & Strong Polyurethane Mouse Blocker Foam Sealant Use Wall Foam Filler for Holes and Cracks Over Paintable- 2 Pack**SPRAYMAN**$24.11**4.3★**▲ 79%**](https://www.amazon.com/dp/B0CZ128K2J) [**DOW Chemical 157901 Great Stuff Expanding Spray Foam Sealant 12 oz - 441002**DOW CHEMICAL**$8.91**4.5★**▲ 51%**](https://www.amazon.com/dp/B008MG22DC) [**Great Stuff 99112809 Smart Dispenser Pestblock Gray**Great Stuff**$10.41**4.3★**— 2%**](https://www.amazon.com/dp/B07GL5H78K) [**Great Stuff 99108824 Smart Dispenser Gaps & Cracks Cream 12 Ounce**Great Stuff**$8.22**4.5★**— 1%**](https://www.amazon.com/dp/B07GLG7B3Z)
**~~View all trending →~~**
## **What buyers say about crack filler**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**16%
*“One cannworked great”*
**Advertised Vs Actual Product**14%
*“It works as it should be”*
**Efficiency**14%
*“Works ok”*
**Ease Of Use**9%
*“Easy peasy”*
**Value For Money**5%
*“Totally worth the money”*
**Stretchability/Expandability/Elasticity**4%
*“This expanding foam is exactly what I needed for some home repairs”*
**Color**4%
*“Good color”*
**Spray/Flow**4%
*“The spray nozzle was good”*
**Functionality-Overall**2%
*“Works great”*
**Design-Overall**2%
*“Good product, does what was designed to do”*
### **What buyers complain about **
**Spray/Flow**9%
*“Didn't spray”*
**Color**9%
*“Its not Grey”*
**Leak-Proof**9%
*“leaks out of wrong end of tube”*
**Adhesion/Stickiness**8%
*“It does not stick well enough”*
**Ease Of Use**6%
*“Not easy to use”*
**Functionality-Overall**6%
*“Never worked”*
**Ease Of Cleaning**5%
*“Created a HUGE mess”*
**Quality-Overall**5%
*“Not good quality”*
**Dispensing Mechanism**4%
*“It wouldn't dispense properly”*
**Jamming/Clogging**4%
*“Clogged”*
## **Common questions**
- **Is crack filler profitable to sell on Amazon United States?**
- The niche generates $1.3M/yr across 11 tracked products. 90-day search growth is +9.3%. Flapen's verdict: Worth a look (52/100).
- **How competitive is the crack filler niche?**
- 5 brands and 113 sellers compete. The top 5 products take 79% of clicks and top 5 brands hold 100% of demand.
- **What do buyers complain about in crack filler?**
- Top complaints mined from reviews: Spray/Flow, Color, Leak-Proof. The return rate is 0.0%.
- **When does demand for crack filler peak?**
- Demand is steady year-round — the busiest month runs 1.6× the quietest.
- **What does it cost to enter the crack filler niche?**
- Listings span $8.17–$189.38; the average listing price is $33.96 (sweet spot $15–$100). The average incumbent carries 3,426 reviews — the moat a new listing must climb.
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