Window Sealant
FailDemand is soft, at -39.9% this quarter, so Window Sealant is a Fail.
- Flapen Score
- 40 / 100Ranks 1,848 of 2,225 DIY & Tools niches · −9 vs the category median of 4940
- Market size
- £64K/yr98K searches / yr
- 90-day growth
- -39.9%search demand this quarter
- Competition
- 66%top-5 click share · 11 brands · 114 sellers
Flapen Score
Window Sealant against its category
The dotted line is the DIY & Tools average. Past it, Window Sealant is stronger. Inside it, weaker.
Market
The Window Sealant market on Amazon at a glance
Shoppers on Amazon United Kingdom searched for Window Sealant 98K times last year and spent an estimated £64K. The top 5 brands take 81% of clicks. Demand peaks in Jan–Feb–Nov. Flapen scores it 40 out of 100, a Fail.
01 · Demand
An estimated 10.7% of those searches ended in a purchase.
Shoppers searched for this 98K times in the last 12 months. That counts every search on Amazon United Kingdom for this niche's terms. An estimated 10.7% of those searches ended in a purchase. Searches in the last 90 days moved -39.9% against the 90 days before. Searches, conversion and average price together put the market at an estimated £64K a year.
- Searches, last 12 months
- 98K
- Growth, 90 days vs prior 90
- -39.9%
- Conversion, latest week
- 10.7%
- Market size, estimated
- £64Ka year
- Peak month
- November2.5× the quietest month
- Top search term
- window sealant50K searches a year
02 · Price
A sale here is worth £6.11.
Listings sell for £6.11 on average, from £2.57 to £19.15. Amazon reports units sold in ranges. This niche sold 10K to 13K a year. The average listing sells 250 to 500 of them. At £6.11 that is £2K to £3K a year per listing.
- Average price
- £6.11under the $15 to $100 sweet spot
- Price range
- £2.57–£19.15
- Amazon United Kingdom median price
- £12.12across 27,606 niches
- Units sold a year
- 10K–13K
- Units per listing a year
- 250–500
- Revenue per listing a year
- £2K–£3K
- Returns
- 0.6%of orders · Amazon United Kingdom median 0.6%
03 · Entry bar
The bar here is reviews.
79% of listings pay for placement with sponsored ads. 100% ship with Prime. On an average day, 6.6% of listings are out of stock. The average listing ranks #300 within Adhesives & Sealers. It carries 3,187 reviews at 4.40 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 79%
- Prime listings
- 100%
- Out of stock, average day
- 6.6%
- Average rank
- #300in Adhesives & Sealers
- Average rating
- 4.40 starsAmazon United Kingdom average 4.36 stars
- Average reviews
- 3,187per listing
- Listings tracked
- 19
04 · Newcomers
Brands here are settling in.
The brands on the shelf have sold for 38 months on average, so the names here are settling in.
- Launched, last 12 months
- 0
- Successful launches
- 0Amazon's first-year sales bar
- Average brand age
- 38 months
Products
Top Window 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
UniBond Indoor Window & Door Frame Sealant White Acrylic Sealant Paintable from 1 Hour 1 x 467g Cartridge
- Price
- £5.23
- Rating
- 4.5/5
- Reviews
- 978
- Age
- 10y ago

EVO-STIK Window & Door Frame Sealant Waterproof Flexible Overpaintable Lasts up to 15 Years Colour: White Size: 290ml
- Price
- £5.81
- Rating
- 4.4/5
- Reviews
- 612
- Age
- 22y 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

151 Frame Sealant - For all UPVC Wood & Metal Door & Window Frames - Suitable for Internal Use Only (White)
- Price
- £3.25
- Rating
- 4.3/5
- Reviews
- 342
- Age
- 14y 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
Trending
estimated 90-day click momentum
OB1 PaintersPal White - Extremely Paintable Hybrid Sealant & Caulk - Glazing & Joints - No Shrinking - Bubble Free - UV Resistant - Interior & Exterior - 290ml
- Price
- £5.94
- Rating
- 4.7/5
- Reviews
- 112
- Age
- 2y ago

Everbuild General Purpose Silicone Sealant Waterproof Suitable for Interior and Exterior Use White 280ml
- Price
- £3.01
- Rating
- 4.5/5
- Reviews
- 7,891
- Age
- 19y 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

All-in-One Hybrid Polymer Sealant & Adhesive - Anti-Mould Waterproof Paintable & Fast Curing (IVORY 290ml)
- Price
- £5.31
- Rating
- 4.3/5
- Reviews
- 160
- Age
- 1y ago

Dryzone Silicone Sealant Clear Anti Mould Waterproof Premium Sanitary-Grade Low VOC Sealant for Bathroom and Kitchen
- Price
- £6.48
- Rating
- 4.5/5
- Reviews
- 2,463
- Age
- 3y ago
Newest
by launch date
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

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

All-in-One Hybrid Polymer Sealant & Adhesive - Anti-Mould Waterproof Paintable & Fast Curing (IVORY 290ml)
- Price
- £5.31
- Rating
- 4.3/5
- Reviews
- 160
- Age
- 1y ago

OB1 PaintersPal White - Extremely Paintable Hybrid Sealant & Caulk - Glazing & Joints - No Shrinking - Bubble Free - UV Resistant - Interior & Exterior - 290ml
- Price
- £5.94
- Rating
- 4.7/5
- Reviews
- 112
- Age
- 2y ago

Dryzone Silicone Sealant Clear Anti Mould Waterproof Premium Sanitary-Grade Low VOC Sealant for Bathroom and Kitchen
- Price
- £6.48
- Rating
- 4.5/5
- Reviews
- 2,463
- Age
- 3y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 66% of clicks. Leaders hold, but buyers still shop past them.
Brands
11 falling
Sellers
114
Est. top-5 brand share
81%
Top 20: 100%
Est. top-5 click share
66%
Top 20: 100%
Open market
13%
- Unibond43%
- EVO-STIK15%
- Everbuild8%
- 1517%
- Sika7%
- Dryzone6%
- Open — no brand owns it (5 brands, 13%)
Demand
Window Sealant search demand
Weekly searches over the year, seasonality beneath. Pick a range.
Peak months: Jan, Feb, Nov · busiest ÷ quietest = 2.5×
Search terms
Top Window Sealant search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- window sealant50K/yr
- window silicone sealant7K/yr
- frame sealant white5K/yr
- window frame sealant7K/yr
- paintable silicone sealant4K/yr
- window sealant white4K/yr
- frame sealant4K/yr
- white silicone sealant for upvc windows3K/yr
- window sealer5K/yr
- door sealant3K/yr
Reviews and returns
What reviews say buyers love and hate about Window Sealant
We read the reviews and the return reasons for every product selling here.
“difficult to control”
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.
17 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 Window 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








