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fiberglass repair kit

Worth a look57/100

fiberglass repair kit shows low returns (1.0%), but a small market ($571K/yr) keeps it on the watch list.

Market/yr

$571K

Growth (1y)

+155.3%

Products

35

Brands

22

was 15 a year ago

Sellers

126

Price range

$6.85–$69.75

Returns

1.0%

Rating

4.5★

57/100

Worth a look

Scored 57/100 across market size, growth, competition, quality gap, and returns.

Market sizeGrowthCompetitionQuality gapReturns
Market size
26
×0.30
Growth
71
×0.30
Competition
70
×0.20
Quality gap
43
×0.10
Returns
92
×0.10

Demand

Weekly Amazon search volume, last 104 weeks — +155.3% year over year.
13K6KSpike '25Spike '26Jul '24Nov '24Mar '25Jul '25Nov '25Mar '26

Seasonality

Monthly demand index across the year — 1.00 is average.

Peak months: May, Jun · busiest ÷ quietest = 2.1×

Competition

24%3M
  • 3M24%
  • Mallbaola15%
  • J-B Weld13%
  • VIKEYTIM6%
  • bondo5%
  • TotalBoat4%
  • Other (16 brands)33%

The top 5 products take 42% of clicks — established leaders, but buyers still shop beyond them. 22 brands and 126 sellers compete here.

Brands

22 rising

was 15 a year ago

Sellers

126

Top 5 brand share

63%

#ProductBrandPriceRatingReviewsClick shareTrend
23M$21.514.5★3,89013%falling
5J-B Weld$8.374.6★1134%rising
10J-B Weld$23.944.7★2674%flat

Product shelf

All 35 tracked products in this niche.

Reviews

What buyers praise and complain about, mined from review topics.

What buyers love

Ease Of Use17%

“Easy to use”

Quality-Overall16%

“the results are fantastic”

Efficiency9%

“Work perfect”

Maintenance And Repair8%

“Worked well for small repairs”

Advertised Vs Actual Product7%

“As advertised”

Value For Money7%

“Good deal”

Color5%

“The color match was perfect”

Durability4%

“has held up very well”

Material Quality3%

“It provides the essential materials to make durable”

Instructions/User Manual/Troubleshooting3%

“The instructions are clear”

What buyers complain about

Color14%

“felt it was a bit too pink”

Size-Overall9%

“Big piece for a small fix”

Functionality-Overall8%

“It runs and cures super slow”

Leak-Proof6%

“Leaking as received”

Adhesion/Stickiness5%

“You say marine adhesive I say waste of money”

Ease Of Use4%

“Not easy to use”

Material Quality4%

“Not enough material”

Instructions/User Manual/Troubleshooting4%

“The instructions dont clearly specify how much of each product to use”

Advertised Vs Actual Product3%

“This is very deceiving”

Quality-Overall3%

“Expected better”

Top return reasons

  • Color16%
  • Maintenance And Repair13%
  • Functionality-Overall11%
  • Advertised Vs Actual Product11%
  • Size-Overall10%
  • Adhesion/Stickiness7%
  • Value For Money6%
  • Defective Material/Parts6%
  • Material Quality5%
  • Leak-Proof2%

Data scraped July 8, 2026 · Marketplace baseline: 4.4★ avg rating · $22.79 median price · 2.2% median returns across 14,944 tracked niches.