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Waterproof Sealant Spray

Fail

Demand is soft, at -68.3% this quarter, so Waterproof Sealant Spray is a Fail.

Flapen Score
43
43 / 100
Ranks 1,615 of 2,225 DIY & Tools niches · −6 vs the category median of 49
Market size
£82K/yr106K searches / yr
90-day growth
-68.3%search demand this quarter
Competition
69%top-5 click share · 13 brands · 134 sellers

Flapen Score

Waterproof Sealant Spray against its category

The dotted line is the DIY & Tools average. Past it, Waterproof Sealant Spray is stronger. Inside it, weaker.

43Fail
Big MarketTrendingHigh ConversionOpen MarketLow ReturnsPrice rangeAvg priceNo Dominant BrandLow Review BarrierQuality Gap
This niche Category average

Market

The Waterproof Sealant Spray market on Amazon at a glance

Shoppers on Amazon United Kingdom searched for Waterproof Sealant Spray 106K times last year and spent an estimated £82K. The top 5 brands take 76% of clicks. Flapen scores it 43 out of 100, a Fail.

01 · Demand

An estimated 8.4% of those searches ended in a purchase.

Shoppers searched for this 106K times in the last 12 months. That counts every search on Amazon United Kingdom for this niche's terms. An estimated 8.4% of those searches ended in a purchase. Searches in the last 90 days moved -68.3% against the 90 days before. Searches, conversion and average price together put the market at an estimated £82K a year.

Searches, last 12 months
106K
Growth, 90 days vs prior 90
-68.3%
Conversion, latest week
8.4%
Market size, estimated
£82Ka year
Top search term
waterproof sealant spray19K searches a year

02 · Price

A sale here is worth £9.14.

Listings sell for £9.14 on average, from £4.14 to £16.36. Amazon reports units sold in ranges. This niche sold 6K to 8K a year. The average listing sells 250 to 500 of them. At £9.14 that is £2K to £5K a year per listing.

Average price
£9.14under the $15 to $100 sweet spot
Price range
£4.14–£16.36
Amazon United Kingdom median price
£12.12across 27,606 niches
Units sold a year
6K–8K
Units per listing a year
250–500
Revenue per listing a year
£2K–£5K
Returns
0.8%of orders · Amazon United Kingdom median 0.6%

03 · Entry bar

The bar here is reviews.

84% of listings pay for placement with sponsored ads. 89% ship with Prime. On an average day, 4.8% of listings are out of stock. The average listing ranks #330 within Adhesives & Sealers. It carries 1,928 reviews at 4.06 stars, so a new listing needs social proof before a better product.

Sponsored listings
84%
Prime listings
89%
Out of stock, average day
4.8%
Average rank
#330in Adhesives & Sealers
Average rating
4.06 starsAmazon United Kingdom average 4.36 stars
Average reviews
1,928per listing
Listings tracked
19

04 · Newcomers

0 of last year's 2 launches cleared the first-year sales bar.

2 products launched here in the last 12 months. 0 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 47 months on average, so the names here are settling in.

Launched, last 12 months
2
Successful launches
0Amazon's first-year sales bar
Average brand age
47 months

Products

Top Waterproof Sealant Spray products & what they sell for

The products selling here, as shoppers see them on Amazon. Shelf share and sales are our estimates.

Prices and ratings read from Amazon on Jul 22, 2026. The live listing can differ.

Competition

Competition: brands, sellers & click share

The top 5 products take an estimated 69% of clicks. Leaders hold, but buyers still shop past them.

£0£4K£8K£12K£16K101001K10K Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

Brands

13 falling

Sellers

134

Est. top-5 brand share

76%

Top 20: 100%

Est. top-5 click share

69%

Top 20: 100%

Open market

19%

  • GORILLA19%
  • Polar Specialist Coatings19%
  • Pro-Kleen15%
  • 1ABOVE12%
  • JENOLITE11%
  • 1516%

Demand

Waterproof Sealant Spray search demand

Weekly searches over the year, seasonality beneath. Pick a range.

5K3KHoliday '25Spike '26DecJanFebMarAprMayJunJul

Peak months: Jan, Feb · busiest ÷ quietest = 4.8× · 8 of 12 months tracked

Search terms

Top Waterproof Sealant Spray search terms shoppers use

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

  • waterproof sealant spray19K/yr
  • flex seal spray8K/yr
  • sealant spray6K/yr
  • spray sealant for water leaks7K/yr
  • stop leak spray6K/yr
  • spray sealant5K/yr
  • leak sealer spray5K/yr
  • leak repair waterproof sealant spray23K/yr
  • water sealant spray3K/yr
  • roof sealant spray5K/yr

Reviews and returns

What reviews say buyers love and hate about Waterproof Sealant Spray

We read the reviews and the return reasons for every product selling here.

19%of positive reviews mention “Quality-Overall”
30%of negative reviews mention “Leak-Proof”
0.8%of orders come back
“Leaking pipe”
A buyer, on “Leak-Proof”30% of negative reviews mention the same topic

Every topic

Every topic buyers talk about, one row each.

Red shows the share of negative reviews and green the share of positive reviews, biggest topic first. Open a row to read what they wrote.

16 topics

NegativePositive

FAQ

Common Waterproof Sealant Spray questions

Answered from the same tracked data.

Figures on this page are estimates modeled from public Amazon pages and third-party keyword data. Amazon does not supply them, and no connected seller's data is used. How we handle Amazon data