Waterproof Sealant
Waterproof Sealant shows low returns (0.6%), but soft demand (-21.9% this quarter) keeps it on the watch list.
Flapen Score
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
Who owns the niche?
The top 5 brands hold 64% of demand, so 36% of the market is open.
36%
open market share
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
Top Waterproof Sealant products & what they sell for
Every tracked product — its share of the shelf, its review moat, and what it sells for.
Top sellers
by 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
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: brands, sellers & click share
The top 5 products take 44% of clicks — established leaders, but buyers still shop beyond them.
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.
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“very pleased with quality to date”
“As advertised”
“Fair price”
“Easy to use”
“Strong and easy to use adhesive”
What buyers complain about
64% of reviews“Poor adhesive”
“Not user friendly”
“item leaked everywhere”
“doesnt do what it says it would”
“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.
Common Waterproof Sealant questions
The questions sellers ask about this niche, answered from the tracked metrics.
Best Flapen score
The highest-scoring niches we track right now, across every category.








