Ronseal 3 in 1 Mould Killer
FailDemand is soft, at -60.8% this quarter, so Ronseal 3 in 1 Mould Killer is a Fail.
- Flapen Score
- 35 / 100Ranks 2,091 of 2,225 DIY & Tools niches · −14 vs the category median of 4935
- Market size
- £29K/yr15K searches / yr
- 90-day growth
- -60.8%search demand this quarter
- Competition
- 87%top-5 click share · 4 brands · 44 sellers
Flapen Score
Ronseal 3 in 1 Mould Killer against its category
The dotted line is the DIY & Tools average. Past it, Ronseal 3 in 1 Mould Killer is stronger. Inside it, weaker.
Market
The Ronseal 3 in 1 Mould Killer market on Amazon at a glance
Shoppers on Amazon United Kingdom searched for Ronseal 3 in 1 Mould Killer 15K times last year and spent an estimated £29K. All 4 brands take every click. Demand peaks in Jan–Feb–Nov–Dec. Flapen scores it 35 out of 100, a Fail.
01 · Demand
An estimated 11.5% of those searches ended in a purchase.
Shoppers searched for this 15K times in the last 12 months. That counts every search on Amazon United Kingdom for this niche's terms. An estimated 11.5% of those searches ended in a purchase. Searches in the last 90 days moved -60.8% against the 90 days before. Searches, conversion and average price together put the market at an estimated £29K a year.
- Searches, last 12 months
- 15K
- Growth, 90 days vs prior 90
- -60.8%
- Conversion, latest week
- 11.5%
- Market size, estimated
- £29Ka year
- Peak month
- January4.3× the quietest month
- Top search term
- dryzone mould remover9K searches a year
02 · Price
A sale here is worth £17.25.
Listings sell for £17.25 on average, from £4.19 to £51.72. Amazon reports units sold in ranges. This niche sold 2K to 3K a year. The average listing sells 250 to 500 of them. At £17.25 that is £4K to £9K a year per listing.
- Average price
- £17.25inside the $15 to $100 sweet spot
- Price range
- £4.19–£51.72
- Amazon United Kingdom median price
- £12.12across 27,606 niches
- Units sold a year
- 2K–3K
- Units per listing a year
- 250–500
- Revenue per listing a year
- £4K–£9K
- Returns
- 0.3%of orders · Amazon United Kingdom median 0.6%
03 · Entry bar
The bar here is reviews.
89% 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 #49 within Painting Supplies, Tools & Wall Treatments. It carries 6,437 reviews at 4.49 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 89%
- Prime listings
- 100%
- Out of stock, average day
- 0.0%
- Average rank
- #49in Painting Supplies, Tools & Wall Treatments
- Average rating
- 4.49 starsAmazon United Kingdom average 4.36 stars
- Average reviews
- 6,437per listing
- Listings tracked
- 9
04 · Newcomers
Brands here are established.
The brands on the shelf have sold for 64 months on average, so the names here are established.
- Launched, last 12 months
- 0
- Successful launches
- 0Amazon's first-year sales bar
- Average brand age
- 64 months
Products
Top Ronseal 3 in 1 Mould Killer 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
Dryzone Mould Remover and Prevention Kit (3 x 450ml spray) The definitive long-term solution to Mould. Dual-Action Mould Remover & Sanitiser Spray.
- Price
- £20.79
- Rating
- 4.5/5
- Reviews
- 2,939
- Age
- 5y ago

Dryzone Mould Remover (5L) Scrub-Free Formula Eliminates Mould & Mildew Immediately
- Price
- £20.82
- Rating
- 4.5/5
- Reviews
- 214
- Age
- 3y ago

Dryzone Anti-Mould Paint Additive 100ml Concentrate - Makes Up to 5L of Emulsion Vinyl Silk & Matt Paint Mould Resistant - Prevents Black Mould Growth for Up to 5 Years
- Price
- £9.18
- Rating
- 4.6/5
- Reviews
- 2,311
- Age
- 7y ago

Polar Damp & Stain Block Spray - 500ml Matt White - Covers Damp Mould Grease Nicotine & Rust Stains - Anti Mould & Damp Proof Paint for Internal Walls & Ceilings - Dries in 10 Min Low Odour
- Price
- £10.12
- Rating
- 4.3/5
- Reviews
- 3,347
- Age
- 5y ago

Dryzone Mould Sanitiser (450ml) - The Ultimate Defence Against Mould and Biological Growth (450ml Mould Sanitiser)
- Price
- £10.95
- Rating
- 4.5/5
- Reviews
- 214
- Age
- 3y ago
Trending
estimated 90-day click momentum
Pro-Kleen Damp & Stain Block Spray Paint Primer White Matt 400ml - Covers Damp Mould Grease Nicotine & Rust Stains - for Walls & Ceilings - Leaves a Waterproof Barrier
- Price
- £6.71
- Rating
- 4.3/5
- Reviews
- 439
- Age
- 3y ago

Polar Damp & Stain Block Spray - 500ml Matt White - Covers Damp Mould Grease Nicotine & Rust Stains - Anti Mould & Damp Proof Paint for Internal Walls & Ceilings - Dries in 10 Min Low Odour
- Price
- £10.12
- Rating
- 4.3/5
- Reviews
- 3,347
- Age
- 5y ago

Dryzone Mould Remover and Prevention Kit (2 x 5L & Sprayer) The Definitive Long-Term Solution to Mould. Dual-Action Mould Remover & Sanitiser Spray.
- Price
- £51.72
- Rating
- 4.6/5
- Reviews
- 143
- Age
- 3y ago

Dryzone Anti-Mould Paint Additive 100ml Concentrate - Makes Up to 5L of Emulsion Vinyl Silk & Matt Paint Mould Resistant - Prevents Black Mould Growth for Up to 5 Years
- Price
- £9.18
- Rating
- 4.6/5
- Reviews
- 2,311
- Age
- 7y ago

Dryzone Mould Remover (5L) Scrub-Free Formula Eliminates Mould & Mildew Immediately
- Price
- £20.82
- Rating
- 4.5/5
- Reviews
- 214
- Age
- 3y ago
Newest
by launch date
Pro-Kleen Damp & Stain Block Spray Paint Primer White Matt 400ml - Covers Damp Mould Grease Nicotine & Rust Stains - for Walls & Ceilings - Leaves a Waterproof Barrier
- Price
- £6.71
- Rating
- 4.3/5
- Reviews
- 439
- Age
- 3y ago

Dryzone Mould Sanitiser (450ml) - The Ultimate Defence Against Mould and Biological Growth (450ml Mould Sanitiser)
- Price
- £10.95
- Rating
- 4.5/5
- Reviews
- 214
- Age
- 3y ago

Dryzone Mould Remover (5L) Scrub-Free Formula Eliminates Mould & Mildew Immediately
- Price
- £20.82
- Rating
- 4.5/5
- Reviews
- 214
- Age
- 3y ago

Dryzone Mould Remover and Prevention Kit (2 x 5L & Sprayer) The Definitive Long-Term Solution to Mould. Dual-Action Mould Remover & Sanitiser Spray.
- Price
- £51.72
- Rating
- 4.6/5
- Reviews
- 143
- Age
- 3y ago

Polar Damp & Stain Block Spray - 500ml Matt White - Covers Damp Mould Grease Nicotine & Rust Stains - Anti Mould & Damp Proof Paint for Internal Walls & Ceilings - Dries in 10 Min Low Odour
- Price
- £10.12
- Rating
- 4.3/5
- Reviews
- 3,347
- Age
- 5y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 87% of clicks. A locked shelf that new listings rarely crack.
Brands
4 flat
Sellers
44
Est. top-5 brand share
100%
Top 20: 100%
Est. top-5 click share
87%
Top 20: 100%
Open market
0%
- Dryzone83%
- Polar Specialist Coatings6%
- HG6%
- Pro-Kleen5%
- Open — no brand owns it (0%)
Demand
Ronseal 3 in 1 Mould Killer search demand
Weekly searches over the year, seasonality beneath. Pick a range.
Peak months: Jan, Feb, Nov, Dec · busiest ÷ quietest = 4.3×
Search terms
Top Ronseal 3 in 1 Mould Killer search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- dryzone mould remover9K/yr
- damp spray3K/yr
- dry zone mould remover2K/yr
Reviews and returns
What reviews say buyers love and hate about Ronseal 3 in 1 Mould Killer
We read the reviews and the return reasons for every product selling here.
“Smell is awful”
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 Ronseal 3 in 1 Mould Killer 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








