A man in a red sweater and jeans installs foil insulation behind a radiator using tesa tape. A snowy scene is visible outside the window, and the room has blue walls with white curtains. (This text has been generated by AI)

Radiator Insulation

There are several areas in the home where heat escapes due to poor insulation, with the wall behind the radiator being a key culprit. Our radiator insulation foil is designed to tackle this problem by reflecting heat back into your room. This simple solution helps you maintain a comfortable indoor temperature, reduce energy loss, and lower your heating bills. Easy to install, it’s an effective way to improve your home’s energy efficiency.

tesamoll® Heat reflector foil

tesamoll® Heat reflector foil

tesamoll® Heat reflector foil is an energy saving foil that reduces the loss of energy through the walls by reflecting the heat generated by radiators.

  • Aluminium-coated foam material
  • Suitable for mounting behind heating radiators
  • Fixing materials not included
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Efficient Radiator Insulation – with tesa® Reflective Foil

If your rooms remain chilly even when the heating is on, it’s often due to heat escaping through the wall behind the radiator. This is a frequent problem in older houses or properties with inadequate insulation. An easy and effective solution is to use radiator reflector foil insulation.

The aluminium-coated surface reflects warmth back into your room, while the polyethylene foam layer provides extra insulation. Simply install the foil behind your radiator—no major renovations or structural changes required. This helps retain heat and block out cold air, making your home warmer and more comfortable.

How to Apply Radiator Reflector Foil: Step-by-Step Guide

01Measure Radiator and Brackets

Take note of the full width of your radiator and the exact position of the brackets. In many cases, you can just measure the width of the bracket itself. Next, mark the distance from the top of the radiator down to the bracket. This ensures the reflective foil fits neatly and securely behind your radiator for the best results.

02Cut Reflector Foil

You can easily cut the reflector foil to size. This lets you tailor the insulation to fit your radiator perfectly, ensuring nothing sticks out from behind and giving a neat, professional finish.

03Apply the Reflector Foil

Now simply slide the reflector foil behind your radiator. This quick and easy step helps you enjoy a warmer home in no time. For best results and to prevent mould, make sure the foil does not sit directly against the wall—leave a small gap for air circulation.

Benefits of Our Radiator Reflector Foil:

  1. Made from high-quality, effective materials
  2. Customisable to fit any radiator
  3. Simple installation—no fixings needed
  4. Safe for use with temperatures up to 70 °C
  5. Discreet design—just 3 mm thick, barely noticeable

A cost-effective alternative to costly wall renovations

Radiator reflector foil is a practical, affordable, and just as effective alternative to costly renovations. Simply cut the foil to size and slide it behind your radiator. In just two easy steps, you can significantly reduce heat loss right at the source.

Its effectiveness comes from the premium materials used, which provide both insulation and a protective barrier. This keeps warm air inside and cold air out, helping your room stay cosy and warm.

A common concern with reflector foils is mould growth. However, with our radiator insulation foil, there’s no need to worry. We’ve designed it without any adhesives or fasteners, so the foil doesn’t sit directly against the wall. This allows for vital air circulation and helps prevent mould from forming.

Frequently Asked Questions and Answers about Radiator Reflector Foil

Radiator reflector foil is particularly effective in radiator recesses, which are often found in older properties. These spaces typically have poorly insulated external walls, resulting in considerable heat loss. By fitting reflective foil behind your radiator, you can reflect warmth back into the room and help prevent cold draughts from entering through the wall. This simple solution is ideal for improving energy efficiency and keeping your home cosier.

tesamoll® Heat reflector foil

On one side, the aluminium coating of the reflector foil ensures that heat from the radiator is directed back into the room. On the other side, the polyethylene foam layer helps stop cold air from entering. The reflector foil serves as both insulation and a protective barrier. Heat frequently escapes through the wall directly behind the radiator, but using radiator reflector foil provides an effective and straightforward alternative to major renovation work.

tesamoll® Heat reflector foil

You can fit your radiator reflector foil in just three simple steps. First, measure the width of your radiator and note the position of the brackets. Next, cut the reflector foil to the right size and slide it behind the radiator. This quick DIY job can help you reduce your heating costs straight away.

tesamoll® Heat reflector foil

Mould can develop if the radiator reflector foil is placed directly against the wall, as this stops air from circulating and creates a damp environment. That’s why our radiator reflector foil does not require any adhesive or fixing materials—simply position it behind the radiator to allow air flow and help prevent mould.

tesamoll® Heat reflector foil

tesa® INSULATION– Saving Energy and Costs by Insulating a Radiator

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The radiator heat reflector foil is one of the smart tesamoll® products that enable you to save energy in no time at all. While our tesamoll® draught excluder seals and profiles help reduce energy loss via doors and windows, our radiator insulation ensures that the warmth that would otherwise be absorbed by the wall behind the radiator is reflected into the room. Insulating Radiators via Heat Reflector Foil… Child's Play Even for Amateurs You don’t need to be an expert to install radiator insulation. All you need is the tesamoll® radiator foil, a tape measure and scissors. You simply measure the area behind the radiator, cut the foil to the right size, and then place it behind the radiator. Unlike most tesa® products, adhesive doesn’t play any role here since that would actually be counterproductive. Gluing the foil to the wall with an adhesive tape could lead to mould formation.
Person measuring the width of a white radiator under a window using a ruler, with a packaged radiator cover or insulation product placed nearby
tesaMoll® Easy to Use
Person installing a reflective insulation sheet on a white radiator beneath a window, with a brick building visible outside.
tesaMoll® Heat Reflector Foil Slips Down Behind the Radiator
Close-up of a white radiator with a thermostatic valve, fitted against a wall, with a reflective insulation panel positioned behind it.
tesaMoll® Heat Reflector Foil Stops Heat Seeping into the Wall
Hands cutting a silver reflective radiator insulation sheet with red scissors, with a white radiator and thermostatic valve in the background.
Cut tesaMoll® Heat Reflector Foil to Size