Radiator reflector panels are sheets of reflective foil that sit behind a radiator so that more of its heat is bounced back into the room instead of warming the wall behind it.
Prices checked on Amazon UK, 27 October 2026.
Radiator reflector panels are sheets of reflective foil that sit behind a radiator so that more of its heat is bounced back into the room instead of warming the wall behind it. They make most sense on radiators fixed to external walls, where that heat would otherwise leak outside, and they are one of the cheapest draught and heat-loss fixes you can do yourself in an afternoon. Most are sold as 60cm wide rolls that you cut to the size of each radiator; some come as ready-made panels. The differences are roll length, thickness and whether fixing pads are included, so the table below lists each from the Amazon UK listing. For more cheap winter fixes, see our window insulation film and draught excluder guides. We found 6 radiator reflector panels and foils in stock on Amazon UK with a live buy-box price when we checked on 27 October 2026. Our overall pick is the Radflek Radiator Reflector Panels, Pack of 2 at £19.99, the budget pick is the BLOSTM Radiator Insulation Foil, 5m x 60cm at £12.49, and our pick for doing the whole house is the CUQOO Radiator Foil Reflector Roll, 25m x 60cm at £25.99. Prices and stock change often, so check both on Amazon before you buy.
Quick comparison
| Product | Price | Best for | Size (listing) | Thickness | Fixing (listing) | Heat reflection claim (listing) |
|---|---|---|---|---|---|---|
| Radflek Radiator Reflector Panels, Pack of 2 | £19.99 | Ready-made panels | 2 panels | – | Instructions for wall and floor mounted radiators | 95% |
| BLOSTM Radiator Insulation Foil, 5m x 60cm | £12.49 | Lowest price | 5m x 60cm | 3.6mm | Hang from radiator brackets, cut to size | 97% |
| CUQOO Radiator Foil Reflector Roll, 25m x 60cm | £25.99 | Most foil for the money | 25m x 60cm | 3.6mm | Cut to size | – |
| BLOSTM Foil Insulation Roll, 10m x 60cm | £18.99 | Mid-size roll | 10m x 60cm | 2.4mm | Cut to size; adhesive pads not included | 97% |
| Vivo Technologies Radiator Reflector Foil, 5m x 60cm | £12.99 | Alternative 5m roll | 5m x 60cm | – | Cut to size | 98% |
| 4BAOHUI Radiator Reflector Panels 5m x 60cm with Adhesive Pads | £14.89 | Adhesive pads included | 5m x 60cm | 3mm | Adhesive pads included | 97% |
Specs from each Amazon UK listing (– = not stated on the listing); prices checked on Amazon UK on 27 October 2026.
Our picks
Radflek Radiator Reflector Panels
Radflek Radiator Reflector Panels
£19.99
Best overall
BLOSTM Radiator Insulation Foil
BLOSTM Radiator Insulation Foil
£12.49
Best budget
CUQOO Radiator Foil Reflector Roll
CUQOO Radiator Foil Reflector Roll
£25.99
Best for families
How we pick
We shortlist products sold on Amazon UK using capacity, features, customer ratings and price band. We do not lab-test every model unless a page says so. The Amazon page is the live price. How we recommend.
Compare at a glance
| Product | Last Amazon price | Buy |
|---|---|---|
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£19.99
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£12.49
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£25.99
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£18.99
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£12.99
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£14.89
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The products
Buying advice
Our top picks
Best overall: Radflek Radiator Reflector Panels, Pack of 2 (£19.99). Two ready-made reflector panels rather than a roll to cut, with instructions for both wall and floor mounted radiators. The listing claims they reflect 95% of the heat from the back of the radiator.
Best budget: BLOSTM Radiator Insulation Foil, 5m x 60cm (£12.49). The cheapest roll here: 5m x 60cm of 3.6mm bubble foil that the title says covers 3 or more radiators. The listing says you hang it from the radiator's wall brackets and can cut it to size.
Best for the whole house: CUQOO Radiator Foil Reflector Roll, 25m x 60cm (£25.99). A 25m roll of 3.6mm three-layer foil with a bubble core, enough for many radiators. The listing describes reflective aluminium on both outer surfaces.
Other radiator reflector foils worth a look
BLOSTM Foil Insulation Roll, 10m x 60cm (£18.99). A 10m roll of 2.4mm bubble foil. The listing notes that adhesive pads are not included.
Vivo Technologies Radiator Reflector Foil, 5m x 60cm (£12.99). A 5m x 60cm double-sided bubble foil in laminated aluminium. The listing claims it reflects 98% of heat back into the room and says it can be cut to any shape.
4BAOHUI Radiator Reflector Panels 5m x 60cm with Adhesive Pads (£14.89). A 5m x 60cm roll of 3mm foam-backed foil with adhesive pads included, according to the title and listing.
Where reflector panels help most
Reflector panels matter most behind radiators on external walls, especially older solid walls without cavity insulation, because that is where heat escapes outside. Behind a radiator on an internal wall, the heat that goes into the wall mostly stays in your home, so the benefit is smaller.
Measure each radiator and cut the foil slightly smaller than the radiator so it is hidden. A 5m roll such as the BLOSTM (£12.49) or Vivo (£12.99) covers a few radiators; for a whole house, the 25m CUQOO roll (£25.99) costs less per metre.
What to look for in radiator reflector panels
Roll length. Most rolls are 60cm wide; compare the length in the table with the number and size of your radiators.
Thickness. Listings range from 2.4mm to 3.6mm. Thicker bubble foil is stiffer and easier to slide behind a radiator without creasing.
Fixing. Some listings include adhesive pads; others hang from the radiator brackets or need pads bought separately.
Claims. The 95% to 98% heat reflection figures are each seller's own claims, not something we have measured.
Ready-made or cut to size. Ready-made panels such as Radflek are quicker; rolls are cheaper per radiator.
Leave a gap. Keep the foil off the radiator itself and away from valves, and follow the fitting instructions.
How we chose these picks
We only included products that were in stock on Amazon UK with a single live buy-box price in pounds when we checked on 27 October 2026, read with a UK delivery address. We skipped listings showing low stock, no stock line or unclear details, and we avoided repeating products already featured in our other guides. Specs in the comparison table come from each product's Amazon UK listing, and a dash means the listing does not state that detail. Descriptions are based on what each listing says; we have not tested these products ourselves, and we have not used star ratings or review counts.
Prices were checked on Amazon UK on 27 October 2026 and can change at any time. Check the current price, details and delivery date on Amazon before you order.
Frequently asked questions
Do radiator reflectors work?
They reduce the heat that soaks into the wall behind a radiator, which matters most on external walls. The listings in this guide claim 95% to 98% of radiant heat is reflected back; these are the sellers' figures, and the benefit is smaller behind radiators on internal walls.
Are radiator reflector panels worth it?
They are cheap, with rolls here from £12.49, and take minutes to fit, so they are one of the lowest-cost heat-loss fixes. They are most worthwhile behind radiators on external walls without cavity insulation.
Do radiator reflectors work on internal walls?
They still reflect heat, but heat that goes into an internal wall mostly stays inside your home, so the saving is much smaller than on an external wall. Prioritise radiators on outside walls.
How do radiator reflectors work?
They are a reflective aluminium layer, often with a bubble core, that sits between the radiator and the wall. Instead of being absorbed by the wall, more of the radiator's heat is bounced back into the room.
