Waterproof Sealant
MaybeAn estimated 0.6% of orders come back. But demand is soft, at -21.9% this quarter, so Waterproof Sealant is a Maybe.
- Flapen Score
- 52 / 100Top 33% of 2,225 DIY & Tools niches · +3 vs the category median of 4952
- Market size
- £122K/yr180K searches / yr
- 90-day growth
- -21.9%search demand this quarter
- Competition
- 44%top-5 click share · 21 brands · 209 sellers
Flapen Score
Waterproof Sealant against its category
The dotted line is the DIY & Tools average. Past it, Waterproof Sealant is stronger. Inside it, weaker.
Market
The Waterproof Sealant market on Amazon at a glance
Shoppers on Amazon United Kingdom searched for Waterproof Sealant 180K times last year and spent an estimated £122K. The top 5 brands take 64% of clicks. Demand peaks in Sep. Flapen scores it 52 out of 100, a Maybe.
01 · Demand
An estimated 7.3% of those searches ended in a purchase.
Shoppers searched for this 180K times in the last 12 months. That counts every search on Amazon United Kingdom for this niche's terms. An estimated 7.3% of those searches ended in a purchase. Searches in the last 90 days moved -21.9% against the 90 days before. Searches, conversion and average price together put the market at an estimated £122K a year.
- Searches, last 12 months
- 180K
- Growth, 90 days vs prior 90
- -21.9%
- Conversion, latest week
- 7.3%
- Market size, estimated
- £122Ka year
- Peak month
- September2.1× the quietest month
- Top search term
- waterproof sealant57K searches a year
02 · Price
A sale here is worth £9.31.
Listings sell for £9.31 on average, from £2.57 to £17.33. Amazon reports units sold in ranges. This niche sold 13K to 15K a year. The average listing sells 100 to 250 of them. At £9.31 that is £931 to £2K a year per listing.
- Average price
- £9.31under the $15 to $100 sweet spot
- Price range
- £2.57–£17.33
- Amazon United Kingdom median price
- £12.12across 27,606 niches
- Units sold a year
- 13K–15K
- Units per listing a year
- 100–250
- Revenue per listing a year
- £931–£2K
- Returns
- 0.6%of orders · Amazon United Kingdom median 0.6%
03 · Entry bar
The bar here is ads and reviews.
92% of listings pay for placement with sponsored ads. 94% ship with Prime. On an average day, 4.0% of listings are out of stock. The average listing ranks #108 within Adhesives & Sealers. It carries 2,801 reviews at 4.33 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 92%
- Prime listings
- 94%
- Out of stock, average day
- 4.0%
- Average rank
- #108in Adhesives & Sealers
- Average rating
- 4.33 starsAmazon United Kingdom average 4.36 stars
- Average reviews
- 2,801per listing
- Listings tracked
- 36
04 · Newcomers
3 of last year's 7 launches cleared the first-year sales bar.
7 products launched here in the last 12 months. 3 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 41 months on average, so the names here are settling in.
- Launched, last 12 months
- 7
- Successful launches
- 3Amazon's first-year sales bar
- Average brand age
- 41 months
Products
Top Waterproof Sealant 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.
Top sellers
by estimated 90-day click share
Liquid Waterproof Sealant Clear TUFINEIN Invisible Anti-Leaking Sealant Agent Transparent Waterproof Coating Water-Based Indoor & Outdoor Roofs Walls Garden Anti Leakage Agent (300 G)
- Price
- £7.64
- Rating
- 4.4/5
- Reviews
- 4,231
- Age
- 11mo ago

Everbuild General Purpose Silicone Sealant Waterproof Suitable for Interior and Exterior Use Clear 280ml
- Price
- £2.57
- Rating
- 4.5/5
- Reviews
- 7,522
- Age
- 19y ago

EVO-STIK Sticks Like Sh*t Waterproof Sealant Clear - 290ml - All-Purpose - Mould resistant
- Price
- £6.47
- Rating
- 4.5/5
- Reviews
- 1,127
- Age
- 10y ago

Gorilla 1144110 All Conditions Sealant Silicone Clear 295ml
- Price
- £9.02
- Rating
- 4.6/5
- Reviews
- 5,330
- Age
- 7y ago

UniBond Outdoor Window and Door Frame Sealant Premium Silicone Sealant Suitable for Use on Various Materials* Waterproof and Weather Resistant White 1 x 392g Cartridge
- Price
- £7.04
- Rating
- 4.5/5
- Reviews
- 2,314
- Age
- 10y ago
Trending
estimated 90-day click momentum
WYCOON Invisible Waterproof Sealant 1KG Transparent Liquid Sealant for Leak Repair Waterproof Adhesive Coating for Indoor & Outdoor Use Roof Bathroom Shower
- Price
- £16.63
- Rating
- 4.4/5
- Reviews
- 43
- Age
- 6mo ago

Liquid Waterproof Sealant Clear TUFINEIN Invisible Anti-Leaking Sealant Agent Transparent Waterproof Coating Water-Based Indoor & Outdoor Roofs Walls Garden Anti Leakage Agent (300 G)
- Price
- £7.64
- Rating
- 4.4/5
- Reviews
- 4,231
- Age
- 11mo ago

SCNK 1000g Transparent Waterproof Coating Agent Super Strong Waterproof Insulating Sealant Invisible Waterproofing Sealant for Roofs Walls Indoor and Outdoor Use
- Price
- £17.08
- Rating
- 4.4/5
- Reviews
- 766
- Age
- 1y ago

Silicone Sealant Kitchen & Bathroom Silicone Sealant with Finishing Tool for a Smooth & Professional Finish | Waterproof & Anti-Mould Protection - 120g (WHITE 120g)
- Price
- £7.40
- Rating
- 4.0/5
- Reviews
- 1,121
- Age
- 1y ago

Liquid Waterproof Sealant Clear TUFINEIN Invisible Anti-Leaking Sealant Agent Transparent Waterproof Coating Water-Based Indoor & Outdoor Roofs Walls Garden Anti Leakage Agent (500 G)
- Price
- £9.91
- Rating
- 4.4/5
- Reviews
- 4,231
- Age
- 1y ago
Newest
by launch date
WYCOON Invisible Waterproof Sealant 1KG Transparent Liquid Sealant for Leak Repair Waterproof Adhesive Coating for Indoor & Outdoor Use Roof Bathroom Shower
- Price
- £16.63
- Rating
- 4.4/5
- Reviews
- 43
- Age
- 6mo ago

Gorilla Grab & Seal 290ml Two-in-One Waterproof Grab Adhesive & Sealant Hybrid | Bonds Skirting Kitchens Bathrooms Windows & Doors | High Strength Mould Resistant Paintable All-Weather Use
- Price
- £9.63
- Rating
- 4.1/5
- Reviews
- 59
- Age
- 10mo ago

Liquid Waterproof Sealant Clear TUFINEIN Invisible Anti-Leaking Sealant Agent Transparent Waterproof Coating Water-Based Indoor & Outdoor Roofs Walls Garden Anti Leakage Agent (300 G)
- Price
- £7.64
- Rating
- 4.4/5
- Reviews
- 4,231
- Age
- 11mo ago

Silicone Sealant | Clear Silicone Sealant with Finishing Tool For a Smooth & Professional Finish | Waterproof & Anti-Mould Protection
- Price
- £7.39
- Rating
- 4.0/5
- Reviews
- 1,121
- Age
- 1y ago

Silicone Sealant Kitchen & Bathroom Silicone Sealant with Finishing Tool for a Smooth & Professional Finish | Waterproof & Anti-Mould Protection - 120g (WHITE 120g)
- Price
- £7.40
- Rating
- 4.0/5
- Reviews
- 1,121
- Age
- 1y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 44% of clicks. Leaders hold, but buyers still shop past them.
Brands
21 falling
Sellers
209
Est. top-5 brand share
64%
Top 20: 99%
Est. top-5 click share
44%
Top 20: 83%
Open market
30%
- Tufinein19%
- Everbuild13%
- GORILLA13%
- Unibond11%
- EVO-STIK9%
- Sika6%
Demand
Waterproof Sealant search demand
Weekly searches over the year, seasonality beneath. Pick a range.
Peak months: Sep · busiest ÷ quietest = 2.1×
Search terms
Top Waterproof Sealant search terms shoppers use
The exact words shoppers type, with estimated 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
Reviews and returns
What reviews say buyers love and hate about Waterproof Sealant
We read the reviews and the return reasons for every product selling here.
“Poor adhesive”
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
Keep looking
Related niches
Niches in the same category that score near this one. Research these next.
Best Flapen score
The highest-scoring niches we track right now, across every category.
FAQ
Common Waterproof Sealant 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








