---
title: "Duraglass Fiberglass Filler — $64K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/automotive/duraglass-fiberglass-filler"
last_updated: "2026-08-10T22:10:50.068Z"
locale: en
meta:
description: "Niche score 41/100 · $64K/yr market · 16K searches/yr · $45.91 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 41/100 · $64K/yr market · 16K searches/yr · $45.91 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Duraglass Fiberglass Filler — $64K/yr Amazon US Niche (2026) - Flapen"
---
# **duraglass fiberglass filler**
**Skip it**
A concentrated shelf (top 5 take 94% of clicks) — this niche doesn't clear our bar today.
Market size 16Growth 21Conversion 81Competition 5Returns 100Price range 95Avg price 95Brand share 7Review moat 74Quality gap 24
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Avg price**
**Incredible****$45.91**
avg listing price — sweet spot $15–$100
**Price range**
**Incredible****$15.03–$87.38**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Conversion**
**Great****8.6%**
search→purchase rate — share of searches ending in a sale
**Review moat**
**Good****532.14**
avg incumbent reviews — the moat a new listing must climb
**Quality gap**
**Bad****4.6★**
avg incumbent rating — lower means beatable quality
**Growth**
**Bad****-7.2%**
90-day search growth — must beat 0% to launch
**Market size**
**Bad****$64K**
$64K/yr · 16K searches
**Brand share**
**Bad****97%**
top-5 brand share — brand-locked demand
**Competition**
**Bad****94%**
top-5 click share — a locked-up shelf
According to Flapen's Amazon United States niche tracking, duraglass fiberglass filler is a $64K/yr Amazon United States market (16K searches/yr). The top 5 brands hold 97% of demand. Verdict: Skip it — 41/100.
Data updated Jul 8, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **duraglass fiberglass filler market data**
- **Units sold / yr**
- **1K–1K**
- avg 100–250/product
- **Revenue / yr**
- **$46K–$57K**
- units × avg price
- **Conversion rate**
- **8.6%**
- **Avg BSR**
- **#72**
- **Page quality**
- **0%**
- **Prime**
- **57%**
- **Sponsored**
- **86%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **74 months**
- **Avg seller age**
- **184 days**
## **Competition & brand share**
The top 5 products capture 94% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**6 **▼falling
**Sellers**
**59**
**Top-5 brand share**
**97%**
Top 20: 100%
**Top-5 click share**
**94%**
Top 20: 100%
**Open market**
**0%**
- U.S. Chemical & Plastics73% - Evercoat10% - J-B Weld7% - PLASTILINUM3% - bondo3% - LAUCO3%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -7.2% search growth over the last 90 days.
400300Spike '24Spike '25Prime Day '25Spike '26 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.4×
[**Open Trend **](https://flapen.com/research/us/automotive/duraglass-fiberglass-filler/trend)
## **Top duraglass fiberglass 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%$6K20%$13K30%$19K40%$26K101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 7 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**DURAGLASS 25.6 U.S. FL OZ Part Number 24035**U.S. Chemical & Plastics**$38.58**4.7★362 rev](https://www.amazon.com/dp/B0082LF7B6) [2**Duraglas Fiberglass Filled Filler 1 Gallon**U.S. Chemical & Plastics**$60.46**4.7★813 rev](https://www.amazon.com/dp/B002I0MOY0) [3**Evercoat Everglass Short Strand Fiberglass Reinforced Filler - Waterproof Filler - 32 Fl Oz**Evercoat**$42.72**4.5★501 rev](https://www.amazon.com/dp/B0000AYHHN) [4**J-B Weld Quart - Fiberglass Short-Strained Filler**J-B Weld**$23.94**4.7★267 rev](https://www.amazon.com/dp/B0DQTDTNS2) [5**PLASTILINUM U. S. Chemical & Plastics Duraglas Fiberglass Filled Filler Gallon (USC-24030)**PLASTILINUM**$87.38**4.4★23 rev](https://www.amazon.com/dp/B084M5X44G)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**J-B Weld Quart - Fiberglass Short-Strained Filler**J-B Weld**$23.94**267 rev1y ago](https://www.amazon.com/dp/B0DQTDTNS2) [**LAUCO Ultra Fiber Sandable Fiberglass Filler Bridges Holes Water Resistant Lightweight for Fiberglass Steel Plastics Base Color of Yellow-Green 3 Liters**LAUCO**$53.28**100 rev2y ago](https://www.amazon.com/dp/B0CLM9SWCN) [**PLASTILINUM U. S. Chemical & Plastics Duraglas Fiberglass Filled Filler Gallon (USC-24030)**PLASTILINUM**$87.38**23 rev6y ago](https://www.amazon.com/dp/B084M5X44G) [**3M Bondo Short Strand Fiberglass Reinforced Filler 1.37 LB (621 g) with Bondo Cream Hardener 0.5 oz (14g) Repair Holes Up To 0.5 IN Waterproof (SS-PT-ES)**bondo**$15.03**1,659 rev12y ago](https://www.amazon.com/dp/B00PB3NTFO) [**DURAGLASS 25.6 U.S. FL OZ Part Number 24035**U.S. Chemical & Plastics**$38.58**362 rev17y ago](https://www.amazon.com/dp/B0082LF7B6)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Evercoat Everglass Short Strand Fiberglass Reinforced Filler - Waterproof Filler - 32 Fl Oz**Evercoat**$42.72**4.5★**▲ 38%**](https://www.amazon.com/dp/B0000AYHHN) [**DURAGLASS 25.6 U.S. FL OZ Part Number 24035**U.S. Chemical & Plastics**$38.58**4.7★**▲ 15%**](https://www.amazon.com/dp/B0082LF7B6) [**LAUCO Ultra Fiber Sandable Fiberglass Filler Bridges Holes Water Resistant Lightweight for Fiberglass Steel Plastics Base Color of Yellow-Green 3 Liters**LAUCO**$53.28**4.7★**— 2%**](https://www.amazon.com/dp/B0CLM9SWCN) [**J-B Weld Quart - Fiberglass Short-Strained Filler**J-B Weld**$23.94**4.7★**— 8%**](https://www.amazon.com/dp/B0DQTDTNS2) [**Duraglas Fiberglass Filled Filler 1 Gallon**U.S. Chemical & Plastics**$60.46**4.7★**— 10%**](https://www.amazon.com/dp/B002I0MOY0)
**~~View all trending →~~**
## **What buyers say about duraglass fiberglass filler**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**21%
*“Great Product”*
**Efficiency**16%
*“Worked good for what I needed”*
**Ease Of Use**15%
*“This product is easy to use”*
**Value For Money**14%
*“worth every penny”*
**Maintenance And Repair**11%
*“Good small kit for small repairs”*
**Advertised Vs Actual Product**5%
*“does everything it should do”*
**Assembly/Installation**4%
*“it will set up on you in just minutes”*
**Color**3%
*“Love that it turns purple when mixing”*
**Ease Of Cleaning**3%
*“didn't make to much of a mess”*
**Water Resistance**2%
*“The waterproof feature is a bonus since i dont have to worry about moisture later on”*
### **What buyers complain about **
**Color**20%
*“You'd think they would provide a off-color hardener”*
**Instructions/User Manual/Troubleshooting**20%
*“After reading detailed instructions determined wouldnt work for my project”*
**Advertised Vs Actual Product**17%
*“Deceptive Ad & Non Returnable”*
**Functionality-Overall**17%
*“werks aight”*
**Size-Overall**17%
*“Smaller amount than described”*
**Value For Money**10%
*“Too Expensive”*
## **Common questions**
- **Is duraglass fiberglass filler profitable to sell on Amazon United States?**
- The niche generates $64K/yr across 7 tracked products. 90-day search growth is -7.2%. Flapen's verdict: Skip it (41/100).
- **How competitive is the duraglass fiberglass filler niche?**
- 6 brands and 59 sellers compete. The top 5 products take 94% of clicks and top 5 brands hold 97% of demand.
- **What do buyers complain about in duraglass fiberglass filler?**
- Top complaints mined from reviews: Color, Instructions/User Manual/Troubleshooting, Advertised Vs Actual Product. The return rate is 0.0%.
- **When does demand for duraglass fiberglass filler peak?**
- Demand is steady year-round — the busiest month runs 1.4× the quietest.
- **What does it cost to enter the duraglass fiberglass filler niche?**
- Listings span $15.03–$87.38; the average listing price is $45.91 (sweet spot $15–$100). The average incumbent carries 532 reviews — the moat a new listing must climb.
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