window insulation
Skip itA small market ($33K/yr) — this niche doesn't clear our bar today.
Quality gap
Incredible3.8★avg incumbent rating — lower means beatable quality
Returns
Great1.6%return rate — above 5% kills the launch gate
Brand share
Good71%top-5 brand share — brands hold most of the demand
Competition
Okay55%top-5 click share — leaders hold, buyers still browse
Avg price
Okay£10.74avg listing price — sweet spot $15–$100
Price range
Okay£4.65–£19.95cheapest to priciest tracked listing — scored on the share inside $15–$100
Growth
Bad-2.2%90-day search growth — must beat 0% to launch
Review moat
Bad8,583.5avg incumbent reviews — the moat a new listing must climb
Conversion
Bad1.2%search→purchase rate — share of searches ending in a sale
Market size
Bad£33K£33K/yr · 263K searches
According to Flapen's Amazon United Kingdom niche tracking, window insulation is a £33K/yr Amazon United Kingdom market (263K searches/yr). The top 5 brands hold 71% of demand. Demand peaks in Jan–Oct–Nov–Dec. Verdict: Skip it — 42/100.
Data updated Jul 22, 2026 · scored weekly · How we score niches
window insulation market data
- Units sold / yr
- 8K–10K
- avg 250–500/product
- Revenue / yr
- £86K–£107K
- units × avg price
- Conversion rate
- 1.2%
- Avg BSR
- #21
- Page quality
- 0%
- Prime
- 95%
- Sponsored
- 86%
- Out of stock
- 7.4%
- Avg brand age
- 35 months
- Avg seller age
- 182 days
Competition & brand share
The top 5 products take 55% of clicks — established leaders, but buyers still shop beyond them.Brands
14 falling
Sellers
35
Top-5 brand share
71%
Top 20: 100%
Top-5 click share
55%
Top 20: 97%
Open market
24%
- rabbitgoo40%
- Lifetree10%
- tesa UK9%
- BKSAI6%
- Aozzy6%
- Gufoltie5%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -2.2% search growth over the last 90 days.Peak months: Jan, Oct, Nov, Dec · busiest ÷ quietest = 12.8×
Top window insulation search terms
- thermal window film32K/yr
- window insulation74K/yr
- window insulation film33K/yr
- window insulation kit22K/yr
- secondary glazing kit for windows17K/yr
- secondary glazing10K/yr
- insulation window film6K/yr
- window thermal insulation7K/yr
- weatherproofing window insulation kits4K/yr
- soundproof window film3K/yr
Top window insulation 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 22 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
rabbitgoo Heat Reflective Window Film Privacy Silver 44.5x200cm
rabbitgoo£6.284.1★61,407 rev
rabbitgoo Heat Reflective Window Film Privacy Film for Glass Windows Silver 44.5×200cm One Way Mirror Tint with Tools Static Cling Anti Glare UV Sun Blocker for Home Office
rabbitgoo£6.434.0★1,457 rev
Lifetree Reflective One Way Window Film Privacy: Mirror Heat Control Sun Blocker Window Tint Film UV Protection Anti Glare No Glue Clear Daytime Privacy for Home Office (Silver 44.5 * 200cm)
Lifetree£5.693.9★22,425 rev
tesamoll Thermo Cover Window Insulating Film - Transparent Insulating Foil for Thermal Insulation of Windows - Includes Double Sided Tape for Easy Installation - 1.7 m x 1.5 m
tesa UK£8.103.8★10,919 rev
BKSAI Upgrade Window Insulation Film Kit Thicker Transparent Thermal Film for Winter with Strong Adhesive and Cold-Resistant Hook & Loop to Keep Draught and Cold Out Weatherproofing 1.7x1.5m
BKSAI£10.963.9★163 rev
Newest
by launch date
Silver 44.5x200cm wonderffolie One Way Clear Window Film Privacy Heat Reflective Mirror Window Film for Glass Windows UV Window Tint Film Daytime Anti Glare with Adhesive Thermal Solar Vinyl
wonderffolie£8.247 rev
Silver 44.5x200cm wonderffolie Reflective One Way Window Film Privacy Heat Mirror Window Film Anti Glare Sun Blocker UV Window Film Clear See Out Not in for Home Office
wonderffolie£8.333 rev
Fensfolie(70X200cm Silver) Window Film Privacy One WaySun Blocker Anti Glare UV Window Film Self Adhesive for Home and Office Mirror Window Tint Film Heat Control Sun Blocker
Fensfolie£17.962 rev
Fensfolie(44.5X200cm Silver) Window Film Privacy One WaySun Blocker Anti Glare UV Window Film Self Adhesive for Home and Office Mirror Window Tint Film Heat Control Sun Blocker
Fensfolie£8.967 rev
Evofensteere(44.5X200cm Silver) One Way Window Film Privacy Film Sun Blocker Anti Glare UV Window Film Self Adhesive for Home and Office with Tools Heat Reflective Mirror Window Tint Film Anti Glare
Evofensteere£8.257 rev
Trending
90-day click momentumSilver 44.5x200cm wonderffolie One Way Clear Window Film Privacy Heat Reflective Mirror Window Film for Glass Windows UV Window Tint Film Daytime Anti Glare with Adhesive Thermal Solar Vinyl
wonderffolie£8.242.8★
Silver 44.5x200cm wonderffolie Reflective One Way Window Film Privacy Heat Mirror Window Film Anti Glare Sun Blocker UV Window Film Clear See Out Not in for Home Office
wonderffolie£8.332.0★
Fensfolie(70X200cm Silver) Window Film Privacy One WaySun Blocker Anti Glare UV Window Film Self Adhesive for Home and Office Mirror Window Tint Film Heat Control Sun Blocker
Fensfolie£17.964.0★
rabbitgoo Heat Reflective Window Film Privacy Film for Glass Windows Silver 44.5×200cm One Way Mirror Tint with Tools Static Cling Anti Glare UV Sun Blocker for Home Office
rabbitgoo£6.434.0★
rabbitgoo Heat Reflective Window Film Privacy Silver 90x200cm
rabbitgoo£19.954.1★
What buyers say about window insulation
What buyers praise and complain about, mined from review topics.What buyers love
“Good for the money”
“Easy to use”
“Top quality and very easy to cut”
“Had no issues installing it”
“Great for privacy”
“works well even better than described”
“Easy fit”
“followed all instructions”
“On the heat reduction front it genuinely delivers”
“Easy to stick on”
What buyers complain about
“Poor adhesion”
“Does not do the job”
“the provided adhesive tape is poor in quality”
“Shockingly hot”
“Not durable”
“Not as described”
“Waste of money”
“Privacy view is not 100%”
“I didnt find installation straight forward”
“It's difficult to handle”
Top return reasons
Common questions
- Is window insulation profitable to sell on Amazon United Kingdom?
- The niche generates £33K/yr across 22 tracked products. 2 of 9 products launched in the last 360 days are still selling. 90-day search growth is -2.2%. Flapen's verdict: Skip it (42/100).
- How competitive is the window insulation niche?
- 14 brands and 35 sellers compete. The top 5 products take 55% of clicks and top 5 brands hold 71% of demand.
- What do buyers complain about in window insulation?
- Top complaints mined from reviews: Adhesion/Stickiness, Functionality-Overall, Quality-Overall. The return rate is 1.6%.
- When does demand for window insulation peak?
- Demand peaks in Jan–Oct–Nov–Dec; the busiest month runs 12.8× the quietest.
- What does it cost to enter the window insulation niche?
- Listings span £4.65–£19.95; the average listing price is £10.74 (sweet spot $15–$100). The average incumbent carries 8,584 reviews — the moat a new listing must climb.