I am assuming that these are fireproof

I wouldn't assume that they are fireproof. But, as they're intended to be cut to size and slotted behind a central heating radiator that's A) full of water. B) Max temperature 70C. You can safely assume that there's no risk of them combusting. What you certainly shouldn't do, is put them close to a naked flame, or mount them behind an electric heater.

Can this be used on Vertical radiators?

By vertical do you mean that they are panelled radiators that are "flush" with the outside wall with a small gap between the wall and radiator? If this is so the insulation is easy to install.

Does this work with electric wall heaters?

I see no reason why it wouldn’t

Blostm Radiator Insulation Foil | Desertcart Colombia

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COP 253100

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In stock

Sold byAmazon ColombiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔥 Reflect your heat, reflect your savings!

SLASH YOUR HEATING BILLS - Reflects 97% of radiator heat back into your room, letting you lower your thermostat without sacrificing comfort.
YEAR ROUND CLIMATE CONTROL - Use in winter to retain heat or summer to reflect sunlight and keep rooms cooler—versatility that pays off all year.
EFFORTLESS NO FUSS INSTALLATION - Simply hang or stick with included adhesive pads—no tools or pros needed, and it discreetly disappears behind your radiator.
GENEROUS MULTI RADIATOR COVERAGE - A full 5-meter length covers 3+ radiators, maximizing your home's energy efficiency in one go.
BUILT TO LAST OXIDATION RESISTANT - Premium laminated aluminium foil with protective coating ensures durability and long-term performance.

BLOSTM Radiator Insulation Foil is a 5m x 60cm thick (3.6mm) bubble foil reflector made from laminated aluminium designed to reflect 97% of heat back into your room. Easy to install with adhesive pads or by hanging, it covers multiple radiators and helps reduce energy bills by improving heating efficiency. Its oxidation-resistant coating ensures durability, and it can also be used year-round to reflect heat or sunlight, making it a versatile, cost-saving home insulation solution.

Specifications

ASIN	B08V8T9CTX
Best Sellers Rank	35,006 in DIY & Tools ( See Top 100 in DIY & Tools ) 22 in Panel Insulation
Brand	BLOSTM
Country of Origin	China
Coverage	5m x 60cm (covers 3+ radiators)
Customer Reviews	4.4 4.4 out of 5 stars (2,829)
Included Components	5m x 60cm Insulation Foil
Item Dimensions L x W	5L x 0.6W metres
Item Thickness	3.6 Millimetres
Item Type Name	Insulation Bubble Foil
Manufacturer	BLOSTM
Material	Aluminium
Model Number	5m x 60cm
Part Number	BLRBF
Recommended Uses For Product	Radiator reflector panels, heat insulation, ceiling insulation, roof insulation, wall insulation, floor insulation, sunlight reflection, vapour barrier, water heaters, windows, RVs, greenhouses, attics, garages, pet hutch insulation
UPC	759049739593
Unit Count	1.0 count

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COP 253100

Duties & taxes included

In stock

Sold byAmazon ColombiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Colombia.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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