Gutter Sealant
MaybeAn estimated 0.8% of orders come back. But prices span $2.71–$15.61, mostly outside the sweet spot, so Gutter Sealant is a Maybe.
- Flapen Score
- 51 / 100Top 38% of 2,225 DIY & Tools niches · +2 vs the category median of 4951
- Market size
- £47K/yr67K searches / yr
- 90-day growth
- +10.6%search demand this quarter
- Competition
- 46%top-5 click share · 15 brands · 156 sellers
Flapen Score
Gutter Sealant against its category
The dotted line is the DIY & Tools average. Past it, Gutter Sealant is stronger. Inside it, weaker.
Market
The Gutter Sealant market on Amazon at a glance
Shoppers on Amazon United Kingdom searched for Gutter Sealant 67K times last year and spent an estimated £47K. The top 5 brands take 71% of clicks. Demand peaks in Jun–Sep. Flapen scores it 51 out of 100, a Maybe.
01 · Demand
An estimated 8.6% of those searches ended in a purchase.
Shoppers searched for this 67K times in the last 12 months. That counts every search on Amazon United Kingdom for this niche's terms. An estimated 8.6% of those searches ended in a purchase. Searches in the last 90 days moved +10.6% against the 90 days before. Searches, conversion and average price together put the market at an estimated £47K a year.
- Searches, last 12 months
- 67K
- Growth, 90 days vs prior 90
- +10.6%
- Conversion, latest week
- 8.6%
- Market size, estimated
- £47Ka year
- Peak month
- September3.1× the quietest month
- Top search term
- gutter sealant36K searches a year
02 · Price
A sale here is worth £8.11.
Listings sell for £8.11 on average, from £2.71 to £15.61. Amazon reports units sold in ranges. This niche sold 6K to 8K a year. The average listing sells 250 to 500 of them. At £8.11 that is £2K to £4K a year per listing.
- Average price
- £8.11under the $15 to $100 sweet spot
- Price range
- £2.71–£15.61
- 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–£4K
- Returns
- 0.8%of orders · Amazon United Kingdom median 0.6%
03 · Entry bar
The bar here is reviews.
63% of listings pay for placement with sponsored ads. 89% ship with Prime. On an average day, 0.0% of listings are out of stock. The average listing ranks #186 within Building Supplies. It carries 3,345 reviews at 4.34 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 63%
- Prime listings
- 89%
- Out of stock, average day
- 0.0%
- Average rank
- #186in Building Supplies
- Average rating
- 4.34 starsAmazon United Kingdom average 4.36 stars
- Average reviews
- 3,345per listing
- Listings tracked
- 27
04 · Newcomers
1 of last year's 2 launches cleared the first-year sales bar.
2 products launched here in the last 12 months. 1 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 53 months on average, so the names here are settling in.
- Launched, last 12 months
- 2
- Successful launches
- 1Amazon's first-year sales bar
- Average brand age
- 53 months
Products
Top Gutter 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
Everbuild Everflex Roof and Gutter Sealant Butyl-Based Sealant and Adhesive for Roofing Excellent Weathering Properties Black 295 ml
- Price
- £2.71
- Rating
- 4.3/5
- Reviews
- 3,749
- Age
- 19y ago

EVO-STIK Roof and Gutter Sealant Repairs Leaks Excellent Weather Resistance Lasts up to 10 Years Colour: Black Size: 290ml
- Price
- £5.32
- Rating
- 4.2/5
- Reviews
- 54
- Age
- 12y ago

Sika Stixall Extreme Power Sealant and Adhesive Waterproof Black 290ml
- Price
- £4.42
- Rating
- 4.6/5
- Reviews
- 7,030
- Age
- 19y ago

FLOPLAST 114mm square gutter seal - Bag of 10
- Price
- £7.46
- Rating
- 4.5/5
- Reviews
- 486
- Age
- 8y ago

Polar Leak Fix Waterproof Sealant Spray 400ml Clear
- Price
- £10.74
- Rating
- 4.1/5
- Reviews
- 4,576
- Age
- 7y ago
Trending
estimated 90-day click momentum
Gorilla Waterproof Coat & Seal Clear 473ml - Weatherproof Liquid Sealant | Stops & Prevents Leaks | For Roof Tiles Brick Wood Metal Concrete Stone Rubber Plastics*
- Price
- £12.34
- Rating
- 4.5/5
- Reviews
- 2,353
- Age
- 1y ago

1ABOVE 400ml Waterproof Leak Sealant Spray for Roofs & Pipes
- Price
- £5.81
- Rating
- 4.3/5
- Reviews
- 126
- Age
- 4y ago

Hemway Jet Black Construction Sealant & Adhesive 300ml - 1 Pack
- Price
- £8.50
- Rating
- 4.4/5
- Reviews
- 3,009
- Age
- 2y ago

EVO-STIK Roof and Gutter Sealant Repairs Leaks Excellent Weather Resistance Lasts up to 10 Years Colour: Black Size: 290ml
- Price
- £5.32
- Rating
- 4.2/5
- Reviews
- 54
- Age
- 12y 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
Newest
by launch date
Stormdry One Coat Liquid Rubber Leak Seal (500ml Black) | Quick-Dry Waterproof Leak Sealer for Emergency Roof and Gutter Repair on Brick Concrete Metal Roof Felt | Self-Levelling
- Price
- £15.61
- Rating
- 4.4/5
- Reviews
- 139
- Age
- 11mo ago

Roof Sealant - Waterproof Bitumen Sealant for Roofing Felt Gutter Caravans and Asphalt Roof Felt Adhesive - Stops Leaks & Weatherproof (310ML)
- Price
- £10.10
- Rating
- 4.4/5
- Reviews
- 256
- Age
- 1y ago

Gorilla Waterproof Coat & Seal Clear 473ml - Weatherproof Liquid Sealant | Stops & Prevents Leaks | For Roof Tiles Brick Wood Metal Concrete Stone Rubber Plastics*
- Price
- £12.34
- Rating
- 4.5/5
- Reviews
- 2,353
- Age
- 1y ago

Gorilla Waterproof Black Coat & Seal Spray 450ml Flexible Weatherproof Liquid Sealant | Seals out Water Air & Moisture | For Roof Tiles Brick Wood Metal Concrete Stone Rubber Plastics*
- Price
- £13.39
- Rating
- 4.4/5
- Reviews
- 519
- Age
- 2y ago

Hemway Jet Black Construction Sealant & Adhesive 300ml - 1 Pack
- Price
- £8.50
- Rating
- 4.4/5
- Reviews
- 3,009
- Age
- 2y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 46% of clicks. Leaders hold, but buyers still shop past them.
Brands
15 rising
Sellers
156
Est. top-5 brand share
71%
Top 20: 100%
Est. top-5 click share
46%
Top 20: 91%
Open market
24%
- FloPlast22%
- Everbuild18%
- GORILLA13%
- EVO-STIK12%
- Sika7%
- Polar Specialist Coatings6%
Demand
Gutter Sealant search demand
Weekly searches over the year, seasonality beneath. Pick a range.
Peak months: Jun, Sep · busiest ÷ quietest = 3.1×
Search terms
Top Gutter Sealant search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- gutter sealant36K/yr
- gutter rubber seal7K/yr
- gutter seal7K/yr
- gutter sealant black5K/yr
- gutter seals3K/yr
- roof and gutter sealant3K/yr
- gutter repair3K/yr
- guttering sealant3K/yr
Reviews and returns
What reviews say buyers love and hate about Gutter Sealant
We read the reviews and the return reasons for every product selling here.
“Leak”
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 Gutter 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








