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Caulk

Fail

Prices span $2.11–$14.07, mostly outside the sweet spot, so Caulk is a Fail.

Flapen Score
43
43 / 100
Ranks 1,615 of 2,225 DIY & Tools niches · −6 vs the category median of 49
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.

43Fail
Big MarketTrendingHigh ConversionOpen MarketLow ReturnsPrice rangeAvg priceNo Dominant BrandLow Review BarrierQuality Gap
This niche Category average

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

17.9% of searches ended in a purchase last week.

Shoppers searched for this 468K times in the last 12 months. That counts every search on Amazon United Kingdom for this niche's terms. In the latest week, 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

Every tracked product: its share of the shelf, its reviews, and its price.

Competition

Competition: brands, sellers & click share

The top 5 products take 84% of clicks. A locked shelf that new listings rarely crack.

£0£83K£167K£250K£334K101001K10K100K Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

Brands

6 falling

Sellers

57

Top-5 brand share

97%

Top 20: 100%

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.

12K8KSpike '25Spike '26SepDecMarJunAugNovMarMay

Peak months: Feb · busiest ÷ quietest = 1.8×

Search terms

Top Caulk search terms shoppers use

The exact words shoppers type, with 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

What buyers praise, what they complain about and why they send it back, from the reviews.

Complain

Quality-Overall34%−0.12

Cheapest i could find excellent quality

Poor quality

the sealant gun is extremely low quality

Value For Money10%+1.62

Overall this is no better than the cheaper alternatives in my opinion

expensive compared to a trip

Waste of money

Ease Of Use9%−0.04

Hard to use

hard to work with

Couldnt use

Defective Material/Parts7%−0.07

One of the tubes I bought was faulty

The most important part failed

Paint Quality5%−0.04

This means it shows as a different texture when painted is therefore clearly visible

Dries to a grey that you cant paint over

Love

Quality-Overall23%−0.12

Good smooth quality

Excellent product

Good quality caulk

Value For Money23%+1.62

Great value

Reasonable price

Good value

Advertised Vs Actual Product17%+1.23

Did the job

Does the job,good

As described

Ease Of Use9%−0.04

Easy to use

handy

Great Caulk very very useful

Stitch/Finish/Polish5%+0.42

Easy to apply and great finish

Creates a lovely finish and is durable

Gives a smooth finish

Return

0.2% Return rate 13% Fixable by listing

Functionality-Overall14%▄▁█▁▅▄

Couldnt even do the job we bought it for

Not work the money at all

Value For Money11%▁█▃▂▂▁

Overall this is no better than the cheaper alternatives in my opinion

expensive compared to a trip

Waste of money

Defective Material/Parts10%▁▁▃▇▅█

One of the tubes I bought was faulty

The most important part failed

Compatibility-Overall9%▁█▆▇▅▁
Spray/Flow6%▁▇▅▁█▁

FAQ

Common Caulk questions

Answered from the same tracked data.