---
title: "Grey Silicone Sealant — £101K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/diy-tools/grey-silicone-sealant"
last_updated: "2026-07-31T09:32:31.110Z"
locale: en
meta:
description: "Niche score 44/100 · £101K/yr market · 147K searches/yr · £5.75 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 44/100 · £101K/yr market · 147K searches/yr · £5.75 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Grey Silicone Sealant — £101K/yr Amazon UK Niche (2026) - Flapen"
---
# **grey silicone sealant**
**Skip it**
Prices mostly outside the sweet spot ($2.57–$11.06) — this niche doesn't clear our bar today.
Market size 25Growth 16Conversion 95Competition 37Returns 96Price range 0Avg price 16Brand share 49Review moat 49Quality gap 50
**Returns**
**Incredible****0.8%**
return rate — above 5% kills the launch gate
**Conversion**
**Great****12.0%**
search→purchase rate — share of searches ending in a sale
**Quality gap**
**Good****4.5★**
avg incumbent rating — lower means beatable quality
**Brand share**
**Okay****75%**
top-5 brand share — brands hold most of the demand
**Review moat**
**Okay****1,633.76**
avg incumbent reviews — the moat a new listing must climb
**Competition**
**Okay****63%**
top-5 click share — leaders hold, buyers still browse
**Market size**
**Okay****£101K**
£101K/yr · 147K searches
**Growth**
**Bad****-18.6%**
90-day search growth — must beat 0% to launch
**Avg price**
**Bad****£5.75**
avg listing price — sweet spot $15–$100
**Price range**
**Bad****£2.57–£11.06**
cheapest to priciest tracked listing — scored on the share inside $15–$100
According to Flapen's Amazon United Kingdom niche tracking, grey silicone sealant is a £101K/yr Amazon United Kingdom market (147K searches/yr). The top 5 brands hold 75% of demand. Verdict: Skip it — 44/100.
Data updated Jul 22, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **grey silicone sealant market data**
- **Units sold / yr**
- **15K–20K**
- avg 500–750/product
- **Revenue / yr**
- **£86K–£115K**
- units × avg price
- **Conversion rate**
- **12.0%**
- **Avg BSR**
- **#206**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **76%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **44 months**
- **Avg seller age**
- **163 days**
## **Competition & brand share**
The top 5 products take 63% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**10 **—flat
**Sellers**
**81**
**Top-5 brand share**
**75%**
Top 20: 100%
**Top-5 click share**
**63%**
Top 20: 100%
**Open market**
**17%**
- Hemway31% - Unibond14% - Bond It11% - FOME FLEX11% - Sika8% - DEKTON8% - Open — no brand owns it (4 brands, 17%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -18.6% search growth over the last 90 days.
3K2KSpike '25 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.3×
[**Open Trend **](https://flapen.com/research/uk/diy-tools/grey-silicone-sealant/trend)
## **Top grey silicone sealant search terms**
- **grey silicone sealant**47K/yr-15.8%9.8% conv. - **light grey silicone sealant**23K/yr-7.6%8.1% conv. - **grey silicone**14K/yr-23.1%9.3% conv. - **grey sealant silicone**11K/yr-26.8%10.8% conv. - **grey sealant**10K/yr-25.4%10.2% conv. - **grey bathroom sealant**7K/yr-31.7%11.1% conv. - **grey decorators caulk**6K/yr-6.6%3.2% conv. - **grey caulk**7K/yr-25.5%5.1% conv. - **grey silicone sealant bathroom**7K/yr-31.6%10.8% conv. - **light grey silicone**6K/yr-24.9%6.9% conv. [**All search terms **](https://flapen.com/research/uk/diy-tools/grey-silicone-sealant/search-terms)
## **Top grey silicone sealant 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.
0%10%£10K20%£20K30%£30K40%£40K101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 17 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Hemway Light Grey Construction Sealant & Adhesive 300ml - 1 Pack**Hemway**£6.87**4.4★3,009 rev](https://www.amazon.co.uk/dp/B0CPLXDSZK) [2![Fome Flex Grey Silicone Sealant [310ml] Professional Grade Waterproof & Mould Resistant For Bathroom Kitchen Windows Showers & More Long-Lasting UV-Resistant](https://m.media-amazon.com/images/I/31x3ggsvzfL.jpg)**Fome Flex Grey Silicone Sealant \[310ml\] Professional Grade Waterproof & Mould Resistant For Bathroom Kitchen Windows Showers & More Long-Lasting UV-Resistant**FOME FLEX**£6.95**4.5★1,180 rev](https://www.amazon.co.uk/dp/B0BKQPWV7C) [3**Unibond Kitchen & Bathroom Anti-Mould Cartridge Concrete Grey - 274g**Unibond**£8.08**4.6★475 rev](https://www.amazon.co.uk/dp/B0BZD4WFZ5) [4**Bond It Grey MULTI-MATE GP SILICONE**Bond It**£4.54**4.4★527 rev](https://www.amazon.co.uk/dp/B005H0X5P0) [5**Dekton Kitchen and Bath Sealant (Grey) - Multi-Purpose Acrylic for Indoor Applications UV Resistant Flexible Easy Application Excellent Adhesion to Wet Surfaces & Paintable**DEKTON**£2.59**4.3★67 rev](https://www.amazon.co.uk/dp/B0DJ11TKD2)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**UniBond Kitchen and Bathroom Mould-Resistant White Silicone Sealant Easy No Cut Opening Silicone-Based Sanitary Sealant Waterproof 1 x 280ml Cartridge**Unibond**£6.31**41 rev10mo ago](https://www.amazon.co.uk/dp/B0FRNBXTX6) [**Grey Silicone Sealant - Flexible Silicone Tube for Wood Parquet Bathroom Sink Windows - Multi-Purpose Waterproof (Grey 50ml)**professional soma fix**£6.87**861 rev1y ago](https://www.amazon.co.uk/dp/B0FGXRJ8TB) [**Dekton Kitchen and Bath Sealant (Grey) - Multi-Purpose Acrylic for Indoor Applications UV Resistant Flexible Easy Application Excellent Adhesion to Wet Surfaces & Paintable**DEKTON**£2.59**67 rev1y ago](https://www.amazon.co.uk/dp/B0DJ11TKD2) [**Hemway Light Grey Construction Sealant & Adhesive 300ml - 1 Pack**Hemway**£6.87**3,009 rev2y ago](https://www.amazon.co.uk/dp/B0CPLXDSZK) [**Hemway Light Grey Kitchen & Bathroom Sealant & Adhesive 300ml 1 Pack**Hemway**£11.06**3,009 rev2y ago](https://www.amazon.co.uk/dp/B0CPLYZF8X)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**UniBond Kitchen and Bathroom Mould-Resistant White Silicone Sealant Easy No Cut Opening Silicone-Based Sanitary Sealant Waterproof 1 x 280ml Cartridge**Unibond**£6.31**4.4★**▲ 349%**](https://www.amazon.co.uk/dp/B0FRNBXTX6) [![Fome Flex Grey Silicone Sealant [310ml] Professional Grade Waterproof & Mould Resistant For Bathroom Kitchen Windows Showers & More Long-Lasting UV-Resistant](https://m.media-amazon.com/images/I/31x3ggsvzfL.jpg)**Fome Flex Grey Silicone Sealant \[310ml\] Professional Grade Waterproof & Mould Resistant For Bathroom Kitchen Windows Showers & More Long-Lasting UV-Resistant**FOME FLEX**£6.95**4.5★**▲ 226%**](https://www.amazon.co.uk/dp/B0BKQPWV7C) [**Hemway Light Grey Construction Sealant & Adhesive 300ml - 1 Pack**Hemway**£6.87**4.4★**▲ 215%**](https://www.amazon.co.uk/dp/B0CPLXDSZK) [**Dekton Kitchen and Bath Sealant (Grey) - Multi-Purpose Acrylic for Indoor Applications UV Resistant Flexible Easy Application Excellent Adhesion to Wet Surfaces & Paintable**DEKTON**£2.59**4.3★**▲ 175%**](https://www.amazon.co.uk/dp/B0DJ11TKD2) [**EVO-STIK Building Silicone Sealant Grey - 290ml - Waterproof - High Movement Accommodation - Interior & Exterior Use - Lasts up to 25 Years**EVO-STIK**£6.31**4.6★**▲ 25%**](https://www.amazon.co.uk/dp/B0BLHSP6ZL)
**~~View all trending →~~**
## **What buyers say about grey silicone sealant**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**25%
*“Good product great result”*
**Value For Money**17%
*“this was cheaper”*
**Advertised Vs Actual Product**15%
*“Does as advertised”*
**Ease Of Use**8%
*“Easy to use”*
**Color**7%
*“Right colour”*
**Efficiency**5%
*“Does a fine job”*
**Material Quality**3%
*“Well what can I say great quality silicone”*
**Eco Friendliness**2%
*“the tube prominently features nice eco-friendly credentials”*
**Leak-Proof**2%
*“Sealant”*
**Adhesion/Stickiness**2%
*“It sticks well”*
### **What buyers complain about **
**Color**15%
*“more blue than grey - i wont be buying anything like it again”*
**Adhesion/Stickiness**9%
*“just not the best general purpose silicon adhesive/gap filler”*
**Smell**6%
*“Smells a bit”*
**Dispensing Mechanism**5%
*“A second gun would not even dispenser this”*
**Ease Of Use**5%
*“Very hard to get out of tube”*
**Advertised Vs Actual Product**4%
*“Not as advertised”*
**Natural Resource Wastage**3%
*“Waste of time”*
**Quality-Overall**3%
*“Not worrh it spend a bit more get a better product”*
**Material Quality**3%
*“Not as good as a plastic tube unfortunately”*
**Thickness**3%
*“Didnt like this at all - comes out too thick”*
### **Top return reasons **
**Color**75%
**Advertised Vs Actual Product**4%
**Functionality-Overall**3%
**Add-Ons/Attachments**2%
**Spray/Flow**2%
**Size-Overall**2%
**Quality-Overall**1%
**Defective Material/Parts**1%
**Leak-Proof**1%
**Material Quality**1%
## **Common questions**
- **Is grey silicone sealant profitable to sell on Amazon United Kingdom?**
- The niche generates £101K/yr across 17 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is -18.6%. Flapen's verdict: Skip it (44/100).
- **How competitive is the grey silicone sealant niche?**
- 10 brands and 81 sellers compete. The top 5 products take 63% of clicks and top 5 brands hold 75% of demand.
- **What do buyers complain about in grey silicone sealant?**
- Top complaints mined from reviews: Color, Adhesion/Stickiness, Smell. The return rate is 0.8%.
- **When does demand for grey silicone sealant peak?**
- Demand is steady year-round — the busiest month runs 1.3× the quietest.
- **What does it cost to enter the grey silicone sealant niche?**
- Listings span £2.57–£11.06; the average listing price is £5.75 (sweet spot $15–$100). The average incumbent carries 1,634 reviews — the moat a new listing must climb.
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