thompsons water seal
Skip itBrand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Conversion
Incredible15.7%search→purchase rate — share of searches ending in a sale
Returns
Incredible0.6%return rate — above 5% kills the launch gate
Avg price
Great£18.48avg listing price — sweet spot $15–$100
Price range
Great£10.76–£34.29cheapest to priciest tracked listing — scored on the share inside $15–$100
Review moat
Good1,283.5avg incumbent reviews — the moat a new listing must climb
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Growth
Okay+5.3%90-day search growth — must beat 0% to launch
Market size
Bad£59K£59K/yr · 20K searches
Competition
Bad97%top-5 click share — a locked-up shelf
Brand share
Bad100%top-5 brand share — brand-locked demand
According to Flapen's Amazon United Kingdom niche tracking, thompsons water seal is a £59K/yr Amazon United Kingdom market (20K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Aug–Sep. Verdict: Skip it — 42/100.
Data updated Jul 22, 2026 · scored weekly · How we score niches
thompsons water seal market data
- Units sold / yr
- 2K–3K
- avg 250–500/product
- Revenue / yr
- £37K–£46K
- units × avg price
- Conversion rate
- 15.7%
- Avg BSR
- #524
- Page quality
- 0%
- Prime
- 67%
- Sponsored
- 17%
- Out of stock
- 2.2%
- Avg brand age
- 61 months
- Avg seller age
- 173 days
Competition & brand share
The top 5 products capture 97% of clicks — a locked-up shelf that new listings rarely crack.Brands
3 falling
Sellers
40
Top-5 brand share
100%
Top 20: 100%
Top-5 click share
97%
Top 20: 100%
Open market
0%
- Thompson's60%
- Ronseal34%
- SAFEGUARD6%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +5.3% search growth over the last 90 days.Peak months: Aug, Sep · busiest ÷ quietest = 2.7×
Top thompsons water seal products on Amazon
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
All 6 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
RONSEAL 36286 Thompsons Water Seal 5 Litre (TWSEAL5L) Clear
Thompson's£17.424.5★2,956 rev
TWSU5L 5L Thompsons One Coat Water-Seal
Ronseal£20.484.5★1,236 rev
Ronseal TWSEAL1L Thompsons Water Seal 1 Litre
Ronseal£10.764.4★560 rev
Raincheck Water Seal 5 Litre - Breathable Clear Exterior Brick Stone Mortar & Concrete Sealer
SAFEGUARD£14.374.4★2,451 rev
Ronseal TWSEAL25L Thompsons Water Seal 2.5 Litre
Ronseal£13.584.5★398 rev
Newest
by launch dateRaincheck Water Seal 5 Litre - Breathable Clear Exterior Brick Stone Mortar & Concrete Sealer
SAFEGUARD£14.372,451 rev
2 x Thompsons Water Seal Waterproofer & Protector Brick Concrete Stone 5 Litre
Thompson's£34.29100 rev
RONSEAL 36286 Thompsons Water Seal 5 Litre (TWSEAL5L) Clear
Thompson's£17.422,956 rev
TWSU5L 5L Thompsons One Coat Water-Seal
Ronseal£20.481,236 rev
Ronseal TWSEAL1L Thompsons Water Seal 1 Litre
Ronseal£10.76560 rev
Trending
90-day click momentum2 x Thompsons Water Seal Waterproofer & Protector Brick Concrete Stone 5 Litre
Thompson's£34.294.5★
Raincheck Water Seal 5 Litre - Breathable Clear Exterior Brick Stone Mortar & Concrete Sealer
SAFEGUARD£14.374.4★
RONSEAL 36286 Thompsons Water Seal 5 Litre (TWSEAL5L) Clear
Thompson's£17.424.5★
TWSU5L 5L Thompsons One Coat Water-Seal
Ronseal£20.484.5★
Ronseal TWSEAL1L Thompsons Water Seal 1 Litre
Ronseal£10.764.4★
What buyers say about thompsons water seal
What buyers praise and complain about, mined from review topics.What buyers love
“Good product did what was needed”
“does the job”
“good value for money”
“it waterproofs the wall”
“Easy to use”
“Easy to spray on”
“works really well”
“Stopped a leaky balcony wall”
“Great for roof tiles”
“It works, kind of”
What buyers complain about
“Did not work at all”
“Waste of time and money”
Top return reasons
Common questions
- Is thompsons water seal profitable to sell on Amazon United Kingdom?
- The niche generates £59K/yr across 6 tracked products. 90-day search growth is +5.3%. Flapen's verdict: Skip it (42/100).
- How competitive is the thompsons water seal niche?
- 3 brands and 40 sellers compete. The top 5 products take 97% of clicks and top 5 brands hold 100% of demand.
- What do buyers complain about in thompsons water seal?
- Top complaints mined from reviews: Functionality-Overall, Value For Money. The return rate is 0.6%.
- When does demand for thompsons water seal peak?
- Demand peaks in Aug–Sep; the busiest month runs 2.7× the quietest.
- What does it cost to enter the thompsons water seal niche?
- Listings span £10.76–£34.29; the average listing price is £18.48 (sweet spot $15–$100). The average incumbent carries 1,284 reviews — the moat a new listing must climb.