Caulk
FailPrices span $2.11–$14.07, mostly outside the sweet spot, so Caulk is a Fail.
- Flapen Score
- 43 / 100Ranks 1,615 of 2,225 DIY & Tools niches · −6 vs the category median of 4943
- Market size
- £556K/yr468K searches / yr
- 90-day growth
- -20.0%search demand this quarter
- Competition
- 84%top-5 click share · 6 brands · 57 sellers
Flapen Score
Caulk against its category
The dotted line is the DIY & Tools average. Past it, Caulk is stronger. Inside it, weaker.
Market
The Caulk market on Amazon at a glance
Shoppers on Amazon United Kingdom searched for Caulk 468K times last year and spent an estimated £556K. The top 5 brands take 97% of clicks. Demand peaks in Feb. Flapen scores it 43 out of 100, a Fail.
01 · Demand
An estimated 17.9% of those searches ended in a purchase.
Shoppers searched for this 468K times in the last 12 months. That counts every search on Amazon United Kingdom for this niche's terms. An estimated 17.9% of those searches ended in a purchase. Searches in the last 90 days moved -20.0% against the 90 days before. Searches, conversion and average price together put the market at an estimated £556K a year.
- Searches, last 12 months
- 468K
- Growth, 90 days vs prior 90
- -20.0%
- Conversion, latest week
- 17.9%
- Market size, estimated
- £556Ka year
- Peak month
- February1.8× the quietest month
- Top search term
- caulk176K searches a year
02 · Price
A sale here is worth £6.64.
Listings sell for £6.64 on average, from £2.11 to £14.07. Amazon reports units sold in ranges. This niche sold 80K to 100K a year. The average listing sells 8,000 to 10,000 of them. At £6.64 that is £53K to £66K a year per listing.
- Average price
- £6.64under the $15 to $100 sweet spot
- Price range
- £2.11–£14.07
- Amazon United Kingdom median price
- £12.12across 27,606 niches
- Units sold a year
- 80K–100K
- Units per listing a year
- 8,000–10,000
- Revenue per listing a year
- £53K–£66K
- Returns
- 0.2%of orders · Amazon United Kingdom median 0.6%
03 · Entry bar
The bar here is reviews.
67% of listings pay for placement with sponsored ads. 100% ship with Prime. On an average day, 0.0% of listings are out of stock. The average listing ranks #116 within Adhesives & Sealers. It carries 1,823 reviews at 4.41 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 67%
- Prime listings
- 100%
- Out of stock, average day
- 0.0%
- Average rank
- #116in Adhesives & Sealers
- Average rating
- 4.41 starsAmazon United Kingdom average 4.36 stars
- Average reviews
- 1,823per listing
- Listings tracked
- 9
04 · Newcomers
Brands here are settling in.
The brands on the shelf have sold for 42 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
- 42 months
Products
Top Caulk 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
Sika Caulk Once Premium Quality Acrylic Caulk Highly Flexible Fast Drying White 295ml
- Price
- £2.60
- Rating
- 4.5/5
- Reviews
- 11,812
- Age
- 12y ago

Pack of 2 Soudal Decorator Caulk Gap & Crack Filler Acrylic Silcone Adhesive Sealant
- Price
- £5.30
- Rating
- 4.6/5
- Reviews
- 1,007
- Age
- 7y ago

EVO-STIK Decorators Caulk White - 280ml - Low-Movement Crack and Gap Filler - Fast-Drying - Can be Overpainted - Easy-to-Apply - Lasts Up To 15 Years
- Price
- £3.33
- Rating
- 4.4/5
- Reviews
- 56
- Age
- 11y ago

Decorators Caulk White Set - Bundle With Sealant Gun Silicone Tool Smoothing Set And White Caulk Gap And Crack Filler Acrylic Silicone Adhesive Sealant
- Price
- £14.07
- Rating
- 4.0/5
- Reviews
- 164
- Age
- 1y ago

Soudal Decorators Caulk Acrylic Gap & Crack Filler Silicone Sealant (x6)
- Price
- £9.83
- Rating
- 4.7/5
- Reviews
- 328
- Age
- 7y ago
Trending
estimated 90-day click momentum
EVO-STIK Decorators Caulk White - 280ml - Low-Movement Crack and Gap Filler - Fast-Drying - Can be Overpainted - Easy-to-Apply - Lasts Up To 15 Years
- Price
- £3.33
- Rating
- 4.4/5
- Reviews
- 56
- Age
- 11y ago

Pack of 3 Soudal Decorator Caulk Gap & Crack Filler Acrylic Silcone Adhesive Sealant
- Price
- £6.33
- Rating
- 4.5/5
- Reviews
- 1,051
- Age
- 7y ago

SikaSeal One Hour Caulk (Previously Everflex 125) White 300 ml
- Price
- £2.11
- Rating
- 4.5/5
- Reviews
- 1,642
- Age
- 19y ago

Sika Caulk Once Premium Quality Acrylic Caulk Highly Flexible Fast Drying White 295ml
- Price
- £2.60
- Rating
- 4.5/5
- Reviews
- 11,812
- Age
- 12y ago

Decorators Caulk White Set - Bundle With Sealant Gun Silicone Tool Smoothing Set And White Caulk Gap And Crack Filler Acrylic Silicone Adhesive Sealant
- Price
- £14.07
- Rating
- 4.0/5
- Reviews
- 164
- Age
- 1y ago
Newest
by launch date
Decorators Caulk White Set - Bundle With Sealant Gun Silicone Tool Smoothing Set And White Caulk Gap And Crack Filler Acrylic Silicone Adhesive Sealant
- Price
- £14.07
- Rating
- 4.0/5
- Reviews
- 164
- Age
- 1y ago

Decorators Caulk White Set with Sealant Gun & Smoothing Tool
- Price
- £11.55
- Rating
- 4.1/5
- Reviews
- 74
- Age
- 1y ago

Pack of 2 Soudal Decorator Caulk Gap & Crack Filler Acrylic Silcone Adhesive Sealant
- Price
- £5.30
- Rating
- 4.6/5
- Reviews
- 1,007
- Age
- 7y ago

Pack of 3 Soudal Decorator Caulk Gap & Crack Filler Acrylic Silcone Adhesive Sealant
- Price
- £6.33
- Rating
- 4.5/5
- Reviews
- 1,051
- Age
- 7y ago

Soudal Decorators Caulk Acrylic Gap & Crack Filler Silicone Sealant (x6)
- Price
- £9.83
- Rating
- 4.7/5
- Reviews
- 328
- Age
- 7y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 84% of clicks. A locked shelf that new listings rarely crack.
Brands
6 falling
Sellers
57
Est. top-5 brand share
97%
Top 20: 100%
Est. top-5 click share
84%
Top 20: 100%
Open market
0%
- Everbuild46%
- Soudal27%
- EETU11%
- EVO-STIK7%
- Sika5%
- Siroflex3%
Demand
Caulk search demand
Weekly searches over the year, seasonality beneath. Pick a range.
Peak months: Feb · busiest ÷ quietest = 1.8×
Search terms
Top Caulk search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- caulk176K/yr
- decorators caulk white134K/yr
- decorators caulk46K/yr
- caulk white21K/yr
- caulking15K/yr
- white caulk10K/yr
- decorators caulk white paintable8K/yr
- chaulk6K/yr
- calk sealant7K/yr
- painters mate7K/yr
Reviews and returns
What reviews say buyers love and hate about Caulk
We read the reviews and the return reasons for every product selling here.
“Cheapest i could find excellent quality”
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 Caulk 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








