Is expanding foam profitable to sell on Amazon United Kingdom?

The niche generates £1.0M/yr across 18 tracked products. 0 of 2 products launched in the last 360 days are still selling. 90-day search growth is -11.0%. Flapen's verdict: Worth a look (60/100).

How competitive is the expanding foam niche?

12 brands and 65 sellers compete. The top 5 products take 62% of clicks and top 5 brands hold 75% of demand.

What do buyers complain about in expanding foam?

Top complaints mined from reviews: Ease Of Cleaning, Adhesion/Stickiness, Quality-Overall. The return rate is 0.2%.

When does demand for expanding foam peak?

Demand is steady year-round — the busiest month runs 1.5× the quietest.

What does it cost to enter the expanding foam niche?

Listings span £3.95–£40.21; the average listing price is £10.60 (sweet spot $15–$100). The average incumbent carries 1,039 reviews — the moat a new listing must climb.

expanding foam

Worth a look

Shows low returns (0.2%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Returns

Incredible0.2%

return rate — above 5% kills the launch gate

Conversion

Incredible13.2%

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

Market size

Great£1.0M

£1.0M/yr · 718K searches

Price range

Good£3.95–£40.21

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

Quality gap

Good4.4★

avg incumbent rating — lower means beatable quality

Review moat

Good1,039.44

avg incumbent reviews — the moat a new listing must climb

Brand share

Good75%

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

Competition

Okay62%

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

Avg price

Okay£10.60

avg listing price — sweet spot $15–$100

Growth

Bad-11.0%

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

Signals No Dominant Brand

According to Flapen's Amazon United Kingdom niche tracking, expanding foam is a £1.0M/yr Amazon United Kingdom market (718K searches/yr). The top 5 brands hold 75% of demand. Verdict: Worth a look — 60/100.

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

expanding foam market data

Units sold / yr: 80K–100K; avg 4,000–5,000/product
Revenue / yr: £848K–£1.1M; units × avg price
Conversion rate: 13.2%
Avg BSR: #23
Page quality: 0%
Prime: 83%
Sponsored: 44%
Out of stock: 4.5%
Avg brand age: 47 months
Avg seller age: 173 days

Competition & brand share

The top 5 products take 62% of clicks — established leaders, but buyers still shop beyond them.

Brands

12 rising

Sellers

Top-5 brand share

75%

Top 20: 100%

Top-5 click share

62%

Top 20: 100%

Open market

19%

Soudal19%
fischer18%
FERRIS14%
JKG Unknown13%
Gorilla Filler10%
The Big Cheese6%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -11.0% search growth over the last 90 days.

No pronounced peak months · busiest ÷ quietest = 1.5×

Open Trend

Top expanding foam search terms

expanding foam418K/yr +2.7%6.6% conv.
expanding foam filler109K/yr -53.8%6.6% conv.
expanding foam for gap filling16K/yr +20.3%7.9% conv.
foam filler26K/yr -23.1%5.3% conv.
spray foam26K/yr -13.3%5.5% conv.
low expansion expanding foam10K/yr +19.8%2.7% conv.
foam spray14K/yr -0.2%3.1% conv.
foam filler for gaps13K/yr -2.9%5.6% conv.
spray foam filler for gaps12K/yr -15.4%7.9% conv.
waterproof expanding foam13K/yr -27.0%4.3% conv.

All search terms

Top expanding foam 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 18 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

fischer Triple X Hand Expanding Foam 560g Yellow

fischer£3.954.3★2,260 rev

2 x Cans Of The Original Gorilla Filler Weatherproof expanding foam 500ml Each

JKG Unknown£8.244.4★3,715 rev

FERRIS | The Original Gorilla Filler [2 x 500ml] Weatherproof Expanding Foam Filler | Securely Seals & Fills Squeezes into Gaps | Suitable for Filling Sealing Gaps & Cavities

FERRIS£12.884.4★562 rev

GORILLA FILLER WEATHERPROOF EXPANDING FOAM FILLER

Gorilla Filler£5.324.3★7,631 rev

Soudal 750ml Champagne Gap Filler Expanding Foam Handheld Spray with Nozzle & Gloves (3)

Soudal£13.124.4★248 rev

Newest

by launch date

FERRIS | The Original Gorilla Filler [1 x 500ml] Weatherproof Expanding Foam Filler | Securely Seals & Fills Squeezes into Gaps | Suitable for Filling Sealing Gaps & Cavities

FERRIS£9.7721 rev

10mo ago

500ml The Original Spray Filler Weatherproof Expanding Foam Professional Grade Gap Filler & Sealant for Wood Metal Brick Stone Paintable Sandable Airtight Seal for Indoor & Outdoor Use

SuperGift.com£8.2934 rev

11mo ago

Expanding Foam - Multipurpose Polyurethane Foam Filler for Doors Pipes Frames Windows Cracks & Holes + All Weather (500ML)

professional soma fix£10.28163 rev

1y ago

The Big Cheese Barrier Foam - 400ml Stop Mouse Access Through Holes & Gaps in Walls Protect Cabling and Vulnerable Cavity Areas Odor Destroyer and Pheromone Trail Remover

The Big Cheese£5.82104 rev

1y ago

FERRIS | The Original Gorilla Filler [2 x 500ml] Weatherproof Expanding Foam Filler | Securely Seals & Fills Squeezes into Gaps | Suitable for Filling Sealing Gaps & Cavities

FERRIS£12.88562 rev

3y ago

What buyers say about expanding foam

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

What buyers love

Advertised Vs Actual Product20%

“Very good does what it says”

Ease Of Use19%

“Easy to use”

Value For Money16%

“Good price”

Quality-Overall15%

“overall, the product does work really well; fills holes nicely and dries very quickly, it's just slightly irritating to use”

Stretchability/Expandability/Elasticity6%

“Perfect expanding foam”

Strength3%

“Solid item”

Moist/Dry2%

“The foam cures quickly and hardens well”

Efficiency2%

“Good for the job”

Paint Quality1%

“Good product easy to use can be painted or stained”

Adhesion/Stickiness1%

“A useful filler and fantastic adhesion”

What buyers complain about

Ease Of Cleaning17%

“Very disappointed despite cleaning the deliver tube that”

Adhesion/Stickiness14%

“Not immediately noticeable as becomes sticky over a short period of time”

Quality-Overall12%

“Absolute garbage”

Ease Of Use11%

“Difficult to use”

Spray/Flow8%

“this does not have a spray nozzle”

Value For Money7%

“cheaper versions available”

Functionality-Overall5%

“Does not work”

Stretchability/Expandability/Elasticity3%

“Does NOT expand”

Leak-Proof2%

“Dodgy nozzle”

Compatibility-Overall2%

“Just to clarify this will NOT work with a separate applicator gun”

Top return reasons

Functionality-Overall14%

Defective Material/Parts13%

Leak-Proof11%

Advertised Vs Actual Product8%

Spray/Flow7%

Size-Overall5%

Ease Of Use4%

Adhesion/Stickiness4%

Maintenance And Repair4%

Value For Money4%

Common questions

Is expanding foam profitable to sell on Amazon United Kingdom?: The niche generates £1.0M/yr across 18 tracked products. 0 of 2 products launched in the last 360 days are still selling. 90-day search growth is -11.0%. Flapen's verdict: Worth a look (60/100).
How competitive is the expanding foam niche?: 12 brands and 65 sellers compete. The top 5 products take 62% of clicks and top 5 brands hold 75% of demand.
What do buyers complain about in expanding foam?: Top complaints mined from reviews: Ease Of Cleaning, Adhesion/Stickiness, Quality-Overall. The return rate is 0.2%.
When does demand for expanding foam peak?: Demand is steady year-round — the busiest month runs 1.5× the quietest.
What does it cost to enter the expanding foam niche?: Listings span £3.95–£40.21; the average listing price is £10.60 (sweet spot $15–$100). The average incumbent carries 1,039 reviews — the moat a new listing must climb.