---
title: "Silicone Sealant — £909K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/diy-tools/silicone-sealant"
last_updated: "2026-07-31T11:49:15.441Z"
locale: en
meta:
description: "Niche score 47/100 · £909K/yr market · 1.4M searches/yr · £5.07 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 47/100 · £909K/yr market · 1.4M searches/yr · £5.07 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Silicone Sealant — £909K/yr Amazon UK Niche (2026) - Flapen"
---
# **silicone sealant**
**Skip it**
Prices mostly outside the sweet spot ($1.97–$7.40) — this niche doesn't clear our bar today.
Market size 76Growth 18Conversion 95Competition 32Returns 97Price range 0Avg price 14Brand share 6Review moat 24Quality gap 60
**Returns**
**Incredible****0.6%**
return rate — above 5% kills the launch gate
**Conversion**
**Incredible****12.4%**
search→purchase rate — share of searches ending in a sale
**Market size**
**Great****£909K**
£909K/yr · 1.4M searches
**Quality gap**
**Good****4.4★**
avg incumbent rating — lower means beatable quality
**Competition**
**Okay****66%**
top-5 click share — leaders hold, buyers still browse
**Review moat**
**Bad****4,931.08**
avg incumbent reviews — the moat a new listing must climb
**Growth**
**Bad****-14.6%**
90-day search growth — must beat 0% to launch
**Avg price**
**Bad****£5.07**
avg listing price — sweet spot $15–$100
**Brand share**
**Bad****98%**
top-5 brand share — brand-locked demand
**Price range**
**Bad****£1.97–£7.40**
cheapest to priciest tracked listing — scored on the share inside $15–$100
According to Flapen's Amazon United Kingdom niche tracking, silicone sealant is a £909K/yr Amazon United Kingdom market (1.4M searches/yr). The top 5 brands hold 98% of demand. Verdict: Skip it — 47/100.
Data updated Jul 22, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **silicone sealant market data**
- **Units sold / yr**
- **200K–250K**
- avg 12,500–15,000/product
- **Revenue / yr**
- **£1.0M–£1.3M**
- units × avg price
- **Conversion rate**
- **12.4%**
- **Avg BSR**
- **#66**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **92%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **38 months**
- **Avg seller age**
- **168 days**
## **Competition & brand share**
The top 5 products take 66% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**6 **▼falling
**Sellers**
**91**
**Top-5 brand share**
**98%**
Top 20: 100%
**Top-5 click share**
**66%**
Top 20: 100%
**Open market**
**0%**
- Unibond53% - Sika19% - Everbuild13% - ADVANCEDSIL9% - Dryzone4% - BLISSMART2%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -14.6% search growth over the last 90 days.
30K20KSpike '25 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.3×
[**Open Trend **](https://flapen.com/research/uk/diy-tools/silicone-sealant/trend)
## **Top silicone sealant search terms**
- **silicone sealant**418K/yr-7.0%8.0% conv. - **sealant**157K/yr-14.9%7.2% conv. - **silicone**130K/yr-17.6%3.6% conv. - **white silicone sealant**117K/yr-19.6%15.0% conv. - **bathroom sealant**119K/yr-21.1%12.2% conv. - **bathroom sealant white anti mould**63K/yr-11.3%16.5% conv. - **bathroom silicone sealant**58K/yr-19.9%14.5% conv. - **bath sealant**64K/yr-24.0%11.6% conv. - **shower sealant**42K/yr-16.9%11.9% conv. - **silicon**32K/yr-5.8%3.4% conv. [**All search terms **](https://flapen.com/research/uk/diy-tools/silicone-sealant/search-terms)
## **Top 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%£91K20%£182K30%£273K40%£363K101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 13 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**UniBond Anti-Mould White Waterproof Mould Protection Long-lasting White Silicone Sealant for Kitchen & Bathroom Powerful Bath Sealant 1 x 274g Cartridge**Unibond**£6.70**4.6★20,589 rev](https://www.amazon.co.uk/dp/B01G3OCFVI) [2**Everbuild General Purpose Silicone Sealant Waterproof Suitable for Interior and Exterior Use Clear 280ml**Everbuild**£2.57**4.5★7,522 rev](https://www.amazon.co.uk/dp/B004F1VINS) [3**UniBond Re-New White Silicone Sealant for Kitchen & Bath One-Step Bathroom Sealant Renewal Waterproof Kitchen Silicone with Triple Mould Resistance 1 x 80ml**Unibond**£5.62**4.1★2,203 rev](https://www.amazon.co.uk/dp/B0BS1CMH6N) [4**Silicone Sealant Kitchen & Bathroom Silicone Sealant with Finishing Tool for a Smooth & Professional Finish | Waterproof & Anti-Mould Protection - 120g (WHITE 120g)**ADVANCEDSIL**£7.40**4.0★1,121 rev](https://www.amazon.co.uk/dp/B0F9Y5V3JB) [5**UniBond Bath & Kitchen Sealant Mould Resistant White Silicone Sealant Ideal for Showers Toilets Tiles Worktops & More Durable & Waterproof Easy Bathroom Sealant 1x104g Pressure Pack**Unibond**£5.76**4.3★3,324 rev](https://www.amazon.co.uk/dp/B08NDCTM6X)
**~~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) [**Silicone Sealant Kitchen & Bathroom Silicone Sealant with Finishing Tool for a Smooth & Professional Finish | Waterproof & Anti-Mould Protection - 120g (WHITE 120g)**ADVANCEDSIL**£7.40**1,121 rev1y ago](https://www.amazon.co.uk/dp/B0F9Y5V3JB) [**BlissMart White Silicone Sealant Waterproof Strong White Glue x 2 Tubes Multipurpose Bathroom Silicon Seal Mold Resistant Silicone Tool Kitchen Toilet Sink Caulking Shower Seal Filler Sealant Tool**BLISSMART**£6.61**305 rev1y ago](https://www.amazon.co.uk/dp/B0F4C135ZX) [**UniBond Re-New White Silicone Sealant for Kitchen & Bath One-Step Bathroom Sealant Renewal Waterproof Kitchen Silicone with Triple Mould Resistance 1 x 80ml**Unibond**£5.62**2,203 rev3y ago](https://www.amazon.co.uk/dp/B0BS1CMH6N) [**Dryzone Silicone Sealant White Anti-Mould - Waterproof Premium Sanitary-Grade Low VOC Sealant for Bathroom and Kitchen**Dryzone**£6.23**2,463 rev5y ago](https://www.amazon.co.uk/dp/B0BT89KCPW)
**~~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★**▲ 322%**](https://www.amazon.co.uk/dp/B0FRNBXTX6) [**Sika SikaSeal Sanitary Silicone + (Previously Everflex 500) Waterproof Anti-Fungal Quick Curing Translucent 295ml**Sika**£3.76**4.6★**▲ 115%**](https://www.amazon.co.uk/dp/B001GU6CQ4) [**Everbuild Bath and Kitchen Acrylic Sealant Anti Mould Formulation White 290ml cartridge**Sika**£1.97**4.1★**▲ 77%**](https://www.amazon.co.uk/dp/B000OLDX0O) [**UniBond Re-New White Silicone Sealant for Kitchen & Bath One-Step Bathroom Sealant Renewal Waterproof Kitchen Silicone with Triple Mould Resistance 1 x 80ml**Unibond**£5.62**4.1★**▲ 53%**](https://www.amazon.co.uk/dp/B0BS1CMH6N) [**Everbuild General Purpose Silicone Sealant Waterproof Suitable for Interior and Exterior Use White 280ml**Sika**£3.01**4.5★**▲ 20%**](https://www.amazon.co.uk/dp/B000OLDX4U)
**~~View all trending →~~**
## **What buyers say about silicone sealant**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**23%
*“Good product great result”*
**Value For Money**15%
*“Excellent value for money”*
**Ease Of Use**13%
*“Easy to use”*
**Advertised Vs Actual Product**13%
*“just what you need”*
**Efficiency**5%
*“Has done the job ok”*
**Leak-Proof**3%
*“Sealing made easy – Sealing your bathrooms”*
**Material Quality**3%
*“Very good quality silicone, very good value for money and easy to apply and use, looks very smooth and leaves a perfect finish”*
**Water Resistance**2%
*“Excellent Waterproof Finish”*
**Ease Of Cleaning**2%
*“It has remained easy to keep clean”*
**Color**2%
*“The white colour is clean”*
### **What buyers complain about **
**Ease Of Use**17%
*“Difficult to use”*
**Value For Money**8%
*“In my opinion its cheaper to buy a tube of the stuff”*
**Quality-Overall**8%
*“What complete rubbish”*
**Functionality-Overall**6%
*“Cant squeeze the stuff out”*
**Ease Of Cleaning**5%
*“even harder to clean up afterwards”*
**Thickness**5%
*“almost like thin plastic”*
**Advertised Vs Actual Product**4%
*“Didn't go as far as it states on the description”*
**Size-Overall**4%
*“The size of the tube is small compared to other products out there”*
**Color**3%
*“Turned black within a few weeks”*
**Spray/Flow**3%
*“Horrible Nozzle Idea”*
### **Top return reasons **
**Color**45%
**Functionality-Overall**10%
**Size-Overall**5%
**Advertised Vs Actual Product**5%
**Defective Material/Parts**4%
**Adhesion/Stickiness**3%
**Value For Money**3%
**Quality-Overall**3%
**Add-Ons/Attachments**3%
**Leak-Proof**3%
## **Common questions**
- **Is silicone sealant profitable to sell on Amazon United Kingdom?**
- The niche generates £909K/yr across 13 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is -14.6%. Flapen's verdict: Skip it (47/100).
- **How competitive is the silicone sealant niche?**
- 6 brands and 91 sellers compete. The top 5 products take 66% of clicks and top 5 brands hold 98% of demand.
- **What do buyers complain about in silicone sealant?**
- Top complaints mined from reviews: Ease Of Use, Value For Money, Quality-Overall. The return rate is 0.6%.
- **When does demand for silicone sealant peak?**
- Demand is steady year-round — the busiest month runs 1.3× the quietest.
- **What does it cost to enter the silicone sealant niche?**
- Listings span £1.97–£7.40; the average listing price is £5.07 (sweet spot $15–$100). The average incumbent carries 4,931 reviews — the moat a new listing must climb.
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