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Waterproof Sealant

Waterproof Sealant shows low returns (0.6%), but soft demand (-21.9% this quarter) keeps it on the watch list.

Flapen Score

52
Worth a look
Market size 28Growth 14Conversion 76Competition 68Returns 97Price range 16Avg price 28Brand share 68Review moat 37Quality gap 70
This niche Category average

Is Waterproof Sealant profitable on Amazon?

According to Flapen's Amazon United Kingdom niche tracking, Waterproof Sealant is a £122K/yr Amazon United Kingdom market (180K searches/yr). The top 5 brands hold 64% of demand. Demand peaks in Sep. Verdict: Worth a look — 52/100.

Waterproof Sealant: the Amazon niche in one read

Everything a seller checks before entering, in three answers.

Is the demand real?

Worth a look. Search demand moved -21.9% over the last 90 days and 7.3% of searches end in a purchase.

£122K

revenue / yr

Units sold / yr15K
Search volume / yr-21.9%180K
Conversion rate7.3%
Avg price£9.31

Who owns the niche?

The top 5 brands hold 64% of demand, so 36% of the market is open.

36%

open market share

Brands · sellers21 · 209
Top-5 product click share44%
Open market36%
Avg brand age41 months

Is there a way in?

Listing quality. The average product page scores 0/100 on content standards. Incumbents average 4.3★ — the gap to enter on.

0/100

page quality · 36 products

Sponsored placement92%
New entrants (1y)7· 3 succeeded
Avg rating4.3★
Avg reviews2,801

Top Waterproof Sealant products & what they sell for

Every tracked product — its share of the shelf, its review moat, and what it sells for.

Competition: brands, sellers & click share

The top 5 products take 44% of clicks — established leaders, but buyers still shop beyond them.

£0£5K£10K£15K£20K101001K10K100K Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

Brands

21 falling

Sellers

209

Top-5 brand share

64%

Top 20: 99%

Top-5 click share

44%

Top 20: 83%

Open market

30%

  • Tufinein19%
  • Everbuild13%
  • GORILLA13%
  • Unibond11%
  • EVO-STIK9%
  • Sika6%

Waterproof Sealant demand & seasonality

Weekly search volume, with the niche's key stats alongside.

Volume180KCVR7.3%Products36Brands21Top 5 Brands64%OOS Rate4.0%Rating4.3★Reviews2,801Avg BSR#108
5K3KSpike '24Spike '25Black Friday '25Spike '26SepDecMarJunAugNovMarMay

Peak months: Sep · busiest ÷ quietest = 2.1×

Top Waterproof Sealant search terms shoppers use

The exact queries shoppers type, with yearly volume, growth and conversion.

  • waterproof sealant57K/yr
  • waterproof sealant outdoor16K/yr
  • clear waterproof sealant15K/yr
  • outdoor sealant11K/yr
  • outdoor silicone sealant waterproof8K/yr
  • water sealant11K/yr
  • outdoor sealant waterproof8K/yr
  • floor sealant10K/yr
  • external sealant waterproof5K/yr
  • water proof sealant4K/yr

What reviews say buyers love and hate about Waterproof Sealant

What buyers mention most, as a share of all reviews.

What buyers love

81% of reviews
Quality-Overall21%

very pleased with quality to date

Advertised Vs Actual Product13%

As advertised

Value For Money10%

Fair price

Ease Of Use10%

Easy to use

Adhesion/Stickiness7%

Strong and easy to use adhesive

What buyers complain about

64% of reviews
Adhesion/Stickiness14%

Poor adhesive

Ease Of Use13%

Not user friendly

Leak-Proof8%

item leaked everywhere

Functionality-Overall7%

doesnt do what it says it would

Value For Money5%

Not worth the price I feel

Waterproof Sealant return rate & reasons

Why buyers send it back, as a share of all return requests.

0.6%

Return rate

59%

Fixable by listing

The "fixable" share counts expectation-mismatch reasons — size, look, advertised-vs-actual — that better copy and images address.

1Color
38%
2Functionality-Overall
9%
3Adhesion/Stickiness
8%
4Size-Overall
6%
5Leak-Proof
5%

Common Waterproof Sealant questions

The questions sellers ask about this niche, answered from the tracked metrics.

Flapen scores Waterproof Sealant 52/100 on Amazon United Kingdom — Worth a look. The niche generates £122K/yr across 36 tracked products. 3 of 7 products launched in the last 360 days are still selling. Search demand moved -21.9% over the last 90 days.
Search demand for Waterproof Sealant on Amazon United Kingdom peaks in Sep, where the busiest month runs 2.1× the quietest.