fibreglass resin
Worth a lookShows low returns (0.3%), but a small market ($34K/yr) keeps it on the watch list.
Returns
Incredible0.3%return rate — above 5% kills the launch gate
Price range
Great£7.09–£50.11cheapest to priciest tracked listing — scored on the share inside $15–$100
Review moat
Great423.82avg incumbent reviews — the moat a new listing must climb
Avg price
Great£15.75avg listing price — sweet spot $15–$100
Conversion
Good5.5%search→purchase rate — share of searches ending in a sale
Growth
Good+35.9%90-day search growth — must beat 0% to launch
Brand share
Okay85%top-5 brand share — brands hold most of the demand
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Competition
Okay66%top-5 click share — leaders hold, buyers still browse
Market size
Bad£34K£34K/yr · 39K searches
According to Flapen's Amazon United Kingdom niche tracking, fibreglass resin is a £34K/yr Amazon United Kingdom market (39K searches/yr). The top 5 brands hold 85% of demand. Verdict: Worth a look — 50/100.
Data updated Jul 17, 2026 · scored weekly · How we score niches
fibreglass resin market data
- Units sold / yr
- 2K–2K
- avg 0–100/product
- Revenue / yr
- £24K–£32K
- units × avg price
- Conversion rate
- 5.5%
- Avg BSR
- #38
- Page quality
- 0%
- Prime
- 47%
- Sponsored
- 29%
- Out of stock
- 0.0%
- Avg brand age
- 57 months
- Avg seller age
- 181 days
Competition & brand share
The top 5 products take 66% of clicks — established leaders, but buyers still shop beyond them.Brands
11 falling
Sellers
33
Top-5 brand share
85%
Top 20: 100%
Top-5 click share
66%
Top 20: 100%
Open market
12%
- Swindon Composite Supplies52%
- Swindon Watersports13%
- Swindon Composite Supplies10%
- Limino6%
- U-POL5%
- RESIN GLORY3%
- Open — no brand owns it (5 brands, 12%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +35.9% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 2.0×
Top fibreglass resin search terms
- fibreglass resin13K/yr
- fiberglass resin and hardener6K/yr
- polyester resin8K/yr
- fibre glass resin and hardener5K/yr
- fiberglass resin4K/yr
- fibreglass resin and hardener3K/yr
Top fibreglass resin 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.
All 17 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Swindon Composite Supplies : Fibreglass Resin Polyester Value - GRP Roofing Ponds Laminating by Swindon Composite Supplies (1.0 Kilograms)
Swindon Composite Supplies£11.344.7★198 rev
Swindon Watersports Polyester Resin Kit -Supplied with Hardener Lloyds Approved -Professional Quality Encore 30 (Encore 30-2.5Kg)
Swindon Watersports£20.244.6★44 rev
Swindon Composite Supplies : Fibreglass Resin Polyester Value - GRP Roofing Ponds Laminating (5.0 Kilograms)
Swindon Composite Supplies£28.374.7★198 rev
Polyester Resin Kit Fibreglass Resin -Inc Hardener Lloyds Pro Quality Encore 30 H13212 TAE (1000g)
Swindon Composite Supplies£14.304.6★603 rev
Swindon Composite Supplies : Fibreglass Resin Repair Kit - 1 Sq M of Fibreglass Matting 1kg Polyester Value Resin - GRP Roofing Ponds Laminating by Swindon Composite Supplies (1000 Grams)
Swindon Composite Supplies£13.714.7★198 rev
Newest
by launch dateSwindon Watersports Polyester Resin Kit -Supplied with Hardener Lloyds Approved -Professional Quality Encore 30 (Encore 30-2.5Kg)
Swindon Watersports£20.2444 rev
Marine Fiberglass Repair Kit - 100ml Epoxy Resin Glue for Fiberglass Tub Scratch Repair UV Resistance Water Proof Fiberglass Resin Filler - Gel Coat Repair Kit for Boats Jet Skis Surf Boat Kayak
Limino£8.32181 rev
Swindon Composite Supplies : Fibreglass Resin Repair Kit - 1 Sq M of Fibreglass Matting 1kg Polyester Value Resin - GRP Roofing Ponds Laminating by Swindon Composite Supplies (1000 Grams)
Swindon Composite Supplies£13.71198 rev
Swindon Watersports Polyester Resin Kit Fibreglass Resin -Inc Hardener Lloyds Pro Quality Encore 30 1kg 1000g H13212 TAE
Swindon Composite Supplies£13.8444 rev
Swindon Composite Supplies : Fibreglass Resin Polyester Value - GRP Roofing Ponds Laminating by Swindon Composite Supplies (1.0 Kilograms)
Swindon Composite Supplies£11.34198 rev
Trending
90-day click momentum
Resin Glory 1L (32 oz) - 1:1 Ratio Epoxy Resin Kit - Crystal Clear Food Safe UV Stable for Crafts Jewellery Wood Coasters Mould Casting - Low Viscosity Self-Levelling for Beginners & Pros
RESIN GLORY£16.214.6★
Epoxy Resin Kits for Beginners - DR. RESIN 16oz/473ml Crystal Clear Epoxy Resin Kit 2 Part Resin for Craft Casting Tabletop Jewelry Making and Coating
DR. RESIN£9.034.5★
General Purpose GRP Fibreglass Boat Marine Laminating Repair Polyester Resin 5Kg + Catalyst 100g - Lloyds Approved
Trade Paints£50.114.7★
Swindon Composite Supplies : Fibreglass Resin Polyester Value - GRP Roofing Ponds Laminating by Swindon Composite Supplies (1.0 Kilograms)
Swindon Composite Supplies£11.344.7★
Swindon Watersports Polyester Resin Kit -Supplied with Hardener Lloyds Approved -Professional Quality Encore 30 (Encore 30-2.5Kg)
Swindon Watersports£20.244.6★
What buyers say about fibreglass resin
What buyers praise and complain about, mined from review topics.What buyers love
“Easy to use”
“Excellent kit”
“Did the job perfectly”
“Great value”
“Everything you need to do a quick repair at a reasonable price”
“Excellent clear instructions. for a change”
“Excellent value resin that has a good working time”
“handy size for small jobs”
“Well its done it takes longer to go off”
“great stuff done the job well very strong”
What buyers complain about
“Have concrete bird bath which was leaking”
“Tiny”
“when I came to use it it was solid so no use whatsoever”
“very brittle once hardened”
“Amateurish”
“Not great value for money”
“Its blue in the container”
“there is no means provided of measuring the small amount of hardener required - i had to raid the wife's baking measures for an accurate 5ml spoon”
Top return reasons
Common questions
- Is fibreglass resin profitable to sell on Amazon United Kingdom?
- The niche generates £34K/yr across 17 tracked products. 90-day search growth is +35.9%. Flapen's verdict: Worth a look (50/100).
- How competitive is the fibreglass resin niche?
- 11 brands and 33 sellers compete. The top 5 products take 66% of clicks and top 5 brands hold 85% of demand.
- What do buyers complain about in fibreglass resin?
- Top complaints mined from reviews: Leak-Proof, Size-Overall, Material Quality. The return rate is 0.3%.
- When does demand for fibreglass resin peak?
- Demand is steady year-round — the busiest month runs 2.0× the quietest.
- What does it cost to enter the fibreglass resin niche?
- Listings span £7.09–£50.11; the average listing price is £15.75 (sweet spot $15–$100). The average incumbent carries 424 reviews — the moat a new listing must climb.