Is exterior filler profitable to sell on Amazon United Kingdom?

The niche generates £110K/yr across 28 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is +62.2%. Flapen's verdict: Worth a look (60/100).

How competitive is the exterior filler niche?

16 brands and 112 sellers compete. The top 5 products take 53% of clicks and top 5 brands hold 75% of demand.

What do buyers complain about in exterior filler?

Top complaints mined from reviews: Ease Of Use, Quality-Overall, Hard Feel. The return rate is 0.4%.

When does demand for exterior filler peak?

Demand peaks in Apr–May–Jul–Aug; the busiest month runs 4.0× the quietest.

What does it cost to enter the exterior filler niche?

Listings span £3.27–£22.22; the average listing price is £8.40 (sweet spot $15–$100). The average incumbent carries 1,736 reviews — the moat a new listing must climb.

exterior filler

Worth a look

Shows low returns (0.4%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Returns

Incredible0.4%

return rate — above 5% kills the launch gate

Conversion

Incredible12.3%

search→purchase rate — share of searches ending in a sale

Growth

Great+62.2%

90-day search growth — must beat 0% to launch

Quality gap

Good4.3★

avg incumbent rating — lower means beatable quality

Competition

Good53%

top-5 click share — leaders hold, buyers still browse

Brand share

Okay75%

top-5 brand share — brands hold most of the demand

Review moat

Okay1,736.04

avg incumbent reviews — the moat a new listing must climb

Price range

Okay£3.27–£22.22

cheapest to priciest tracked listing — scored on the share inside $15–$100

Market size

Okay£110K

£110K/yr · 107K searches

Avg price

Bad£8.40

avg listing price — sweet spot $15–$100

According to Flapen's Amazon United Kingdom niche tracking, exterior filler is a £110K/yr Amazon United Kingdom market (107K searches/yr). The top 5 brands hold 75% of demand. Demand peaks in Apr–May–Jul–Aug. Verdict: Worth a look — 60/100.

Data updated Jul 22, 2026 · scored weekly · How we score niches

exterior filler market data

Units sold / yr: 10K–13K; avg 250–500/product
Revenue / yr: £84K–£105K; units × avg price
Conversion rate: 12.3%
Avg BSR: #125
Page quality: 0%
Prime: 89%
Sponsored: 57%
Out of stock: 0.0%
Avg brand age: 58 months
Avg seller age: 167 days

Competition & brand share

The top 5 products take 53% of clicks — established leaders, but buyers still shop beyond them.

Brands

16 rising

Sellers

112

Top-5 brand share

75%

Top 20: 100%

Top-5 click share

53%

Top 20: 93%

Open market

20%

Toupret24%
Ronseal19%
Bartoline14%
Bostik12%
Sika5%
Sandtex5%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +62.2% search growth over the last 90 days.

Peak months: Apr, May, Jul, Aug · busiest ÷ quietest = 4.0×

Open Trend

Top exterior filler search terms

exterior filler16K/yr +72.3%10.4% conv.
toupret masonry repair filler7K/yr +143.1%11.0% conv.
render repair exterior6K/yr +246.8%6.9% conv.
exterior masonry filler7K/yr +143.8%8.6% conv.
render7K/yr +41.5%2.0% conv.
masonry filler exterior6K/yr +73.6%11.3% conv.
render repair10K/yr -29.7%5.1% conv.
masonry filler5K/yr +47.5%6.9% conv.
exterior filler for masonry8K/yr +45.1%13.4% conv.
outdoor filler4K/yr +52.3%11.1% conv.

All search terms

Top exterior filler 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.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 24 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Toupret Masonry Repair Filler - Weather-Resistant Powder Filler for Exterior & Damp Masonry - No Shrink Shapeable Deep Fills - Paint-Ready in 4872hours - Cement-Based Repair Powder - 1.5kg

Toupret£10.544.6★404 rev

Ronseal - Smooth Finish Exterior Multi Purpose Ready Mix Filler Tub 1.2 kg

Ronseal£8.104.4★3,064 rev

Bostik Cementone Render Repair Mortar 10kg - Durable Repair & Patching Mortar - Ready Mixed Just Add Water - Ideal for Weather & Impact Damage - Interior & Exterior Use

Bostik£13.044.5★1,099 rev

Bartoline Ready Mixed Exterior Filler Tube 330g Weather-Resistant No Shrinkage Easy Application Ideal for Outdoor Repairs

Bartoline£4.944.3★94 rev

Toupret Quick Fill Exterior Filler - Fast-Dry Ready Mixed Masonry Repair Paste - Paintable in 30 Minutes No Shrink or Crack - For Walls & Render - 1L

Toupret£15.274.5★31 rev

Newest

by launch date

Gorilla Smooth Finish Wall Filler 473ml Applies Purple & Dries White | Repairs Small and Large Holes in Walls & Ceiling Smooth Finish Wont Shrink or Crack Fills any Depth| Indoor & Outdoor Use

GORILLA£8.96326 rev

10mo ago

SX Siroflex Mortar Repair Cement Grey Ready to use repair mortar for Pointing jobs & Damaged Masonry Joints - Adheres without primer on Damp Surfaces - Interior & Exterior 300ml

Siroflex£3.771,283 rev

3y ago

Bartoline 1876 Ready to Use All Purpose Filler 1kg Professional Quality for Plaster Wood Brick and Stone Easy to Apply & Sand

Bartoline£3.27381 rev

3y ago

Bartoline Ready Mixed Exterior Filler Tube 330g Weather-Resistant No Shrinkage Easy Application Ideal for Outdoor Repairs

Bartoline£4.9494 rev

4y ago

Toupret Masonry Repair Filler - Weather-Resistant Powder Filler for Exterior & Damp Masonry - No Shrink Shapeable Deep Fills - Paint-Ready in 4872hours - Cement-Based Repair Powder - 5kg

Toupret£22.2289 rev

5y ago

What buyers say about exterior filler

What buyers praise and complain about, mined from review topics.

What buyers love

Ease Of Use23%

“Easy to use”

Quality-Overall22%

“Overall, the quality of the product itself emphasizes reliability,”

Advertised Vs Actual Product12%

“As Advertised”

Value For Money8%

“Excellent value”

Efficiency4%

“Works great”

Color3%

“Good basic colour”

Maintenance And Repair2%

“Ideal for repairs and making good”

Stitch/Finish/Polish2%

“Really smooth finish thats easy to work with”

Moist/Dry2%

“Decent filler and dries well”

Adhesion/Stickiness2%

“it adheres well without having to prep the surface beyond blowing off any dust”

What buyers complain about

Ease Of Use14%

“Hard to squeeze out”

Quality-Overall13%

“Good product let down by poor quality control”

Hard Feel10%

“It went off hard by next day”

Leak-Proof8%

“Arrived having completely leaked out into the box”

Color8%

“not brilliant white maybe”

Value For Money6%

“not cheap”

Size-Overall5%

“NOT FITFOR PURPOSE”

Functionality-Overall4%

“Not fit for purpose”

Adhesion/Stickiness3%

“no adhesion”

Durability3%

“unfortunately a few days later it has crumbled away”

Top return reasons

Leak-Proof29%

Defective Material/Parts14%

Functionality-Overall8%

Size-Overall7%

Color6%

Ease Of Use6%

Hard Feel4%

Product Condition4%

Maintenance And Repair3%

Quality-Overall3%

Common questions

Is exterior filler profitable to sell on Amazon United Kingdom?: The niche generates £110K/yr across 28 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is +62.2%. Flapen's verdict: Worth a look (60/100).
How competitive is the exterior filler niche?: 16 brands and 112 sellers compete. The top 5 products take 53% of clicks and top 5 brands hold 75% of demand.
What do buyers complain about in exterior filler?: Top complaints mined from reviews: Ease Of Use, Quality-Overall, Hard Feel. The return rate is 0.4%.
When does demand for exterior filler peak?: Demand peaks in Apr–May–Jul–Aug; the busiest month runs 4.0× the quietest.
What does it cost to enter the exterior filler niche?: Listings span £3.27–£22.22; the average listing price is £8.40 (sweet spot $15–$100). The average incumbent carries 1,736 reviews — the moat a new listing must climb.