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Heat Rejection & Window Insulation Film

Our heat control window films are designed to reduce heat gain whilst allowing plenty of natural light through. Ideal for your home, office or retail outlet, you can purchase our window insulation films by the meter or cut to size. As a rule external films are the most efficient, followed by tinted and reflective films. Our SER and HRF films are ideal for retail outlets as they have virtually no associated loss of natural light.

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Category Description

Make your home or office cooler

  • Target excess heat
  • Target excess sunlight and glare
  • Reduce 99% of UV rays
  • Available the metre or cut to size
  • Clear options ideal for retail store windows

Our solar heat control films are ideal for your home, business premises or retail outlets, and can be applied directly on any smooth glass surface. Window film is truly revolutionary as it enhances your comfort for a fraction of the cost of curtains and blinds, whilst still allowing you to see out. Window films are self adhesive or static cling products which are easy to retro fit to your windows and doors, or on a conservatory. The effect is immediate and you should notice a temperature difference especially on hot summer days.

Another benefit of these solar films is that they also stop up to 99% of UV rays, which in great part cause fading of furnishings, carpets and wooden floors.

Window Film Composition

Most solar control tints are made of layers of different materials and fine metal particles, which are bonded together. This is what makes residential and commercial films different to car tints, as car tints are usually just single layered dyed films. These films act in a spectrally selective way, mainly by targeting short wave infrared (SWIR) components of the light spectrum, preventing the heat gain cycle from taking place, and therefore making your room cooler.

Too much glare

If excess glare is also an issue, and you struggle to watch your television or computer screen, you might want to consider a tinted or heat reflective window film which will also reduce the amount of natural light to enhance your comfort. Glare reduction can only be achieved by making the glass darker and shielding the sun rays, just like sunglasses or car tints would do. Most of our solar films come in 3 grades from dark to light, so you can mitigate the loss of light to suit your requirements.

Double glazed units

When applying heat reducing film on double glazed units, there are a few considerations. Firstly, the darker film can only be applied if the internal pane of the unit is made of toughened glass, so please make sure you check the kite mark on the glass and the film's specifications first. Double glazed units can act as large radiators trapping the heat within the panes. Therefore the most efficient heat control films are the external grade ones as they stop the heat building up within the panes and therefore getting trapped in the room.

Shops and retail outlets

If excess heat is an issue in your shop or store, and you don't want to compromise the view through the window, our HRF-40 heat rejection film has a very slight colour hardly noticeable once on the glass. This window film is very popular with large stores, and especially food stores. It also reduces UV light by 99% helping prevent your displays from fading.

Buy with confidence from Purlfrost

Our website is packed with practical solar control window film available for delivery in the United Kingdom from our London office building. Our customer service and experience is second to none and we are the highest rated window film company on Truspilot with over 10000 reviews from satisfied customers. We hold plenty of stock of a wide range of window films and tend to ship your items within 24h of your purchase, using either Royal Mail or TNT for shipping and prompt delivery throughout the country. Free shipping is available for orders over £100.00.

Frequently Asked Questions
  • Is the heat control film removable?

    Absolutely. You will need a spray bottle and some soapy water, and as wide a glass scraper as you can get. Click here to view our range of window film installation and removal tools

  • How much money will I save on air conditioning bills?

    Every case is different but even a few degrees difference will make for big saving on air conditioning costs. Solar control window films will also help with your heating bills by keeping some of the heat that would otherwise escape through the glass.

  • What is the best heat rejection window film?

    For single pane glass, any of the films will be suitable and have an impact on the temperature. When it comes to double glazed units, the issue is complicated by the fact that a film would trap some of the heat within the pane so for best results an external film is by far the best option. If you don't have the ability to apply the film externally, then an internal tinted or reflective film is the best option. For retail outlets where a tinted film is not an option, our HRF-40 and SER-50 films are the best option as they our virtually colourless once applied to the glass.

  • Is window insulation film easy to DIY?

    Window film is easy to DIY and 99% of our customers apply their film themselves. The principle is simple using soapy water to slide the film in position, then squeegee out the solution and trim to suit. We supply you with easy to follow instructions and a free application tool with your order when you buy film online with us. Take a minute to watch our video tutorial.

  • What is heat gain?

    Heat gain, also known as greenhouse effect, is what makes your home or office too hot on sunny days. Once sunlight goes through the glass and gets in contact with carpets, furniture and other objects, it is converted to long-wave infrared radiation which is unable to escape back through the glass, therefore creating and trapping heat inside the room. 

  • How do I clean heat rejection film?

    Just clean with soapy water and a squeegee, that's all. Do not use anything abrasive on the film or it will scratch it. Wait 4 weeks after installation before you clean the film.

  • Is there a warranty?

    Most of our heat rejection films come with a 7 to10 year warranty, but will last much longer in the right conditions. External films have a lower warranty. Please check the product's Specifications.

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