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Double Glazing Film
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Double Glazing Film

an easy and cost effective kit to insulate your windows

9.95 inc. VAT

Heat shrinkable clear film, also known as secondary glazing film, or window insulation film, is an easy and cost effective way to sort out draughty windows without replacing them.

Stick it to your windows, and tighten with a hairdryer.

Cut down on energy bills, it'll help to stop up to 10% of heat that is otherwise lost through windows in a typical home.




Dimensions: Total area of film is 6 sq m. Sheet size 4015 x 1524mm

Window insulation film really works and is certainly much cheaper than installing double glazing! (It's also ideal if you live in a listed building or conservation area).

  • It is very easy to install, all you need is a hairdryer and a sharp knife (a craft knife will do). You could save up to 85 per year. *
  • Kit includes enough film to insulate four 1508 x 914 mm windows (4' 6 x 3' 0) and adhesive tape
  • Adhesive tape can be removed with hot soapy water when the double glazing film is no longer needed
  • Full instructions for installation are included

* How much could I save?
You could save up to £85 per year, and 420kg of carbon.

How to fit the secondary glazing film
  • Clean the inside of the window, and the frame, thoroughly and allow to dry
  • Apply the double sided tape around the frame
  • Cut a piece of film slightly larger than the taped area
  • Peel the backing from the tape on the top of the window frame - don't touch the tape!
  • Hold the inner side of the film away from you, apply the top edge to the tape, avoiding creases and wrinkles
  • Peel the backing from the tape at the sides of the window frame, and press the film onto it by pulling it out and down
  • If there are any creases, you can remove the film from a corner, and re-apply
  • Use a hairdryer on the lowest setting to heat the film, starting from the edge, whilst rubbing the tape with a soft cloth
  • Hold the hairdryer at last 2cm from the film and heat the rest to remove wrinkles
  • Leave for 10 seconds, then flick with your finger you should hear a drum-like sound
  • Use a sharp knife to trim the excess film

  • Not what you're after?
    View all the eco products in our energy efficiency and energy saving devices section, or click on any of the links on the left hand side to see more.

      double glazing film  quick and straightforward to install .Recently had upvc windows with double glazing fitted but still had condensation appearing on the inner surface. This has cut out the condensation problem immediately. highly recommended    S. IBBOTSON - CUMBRIA

      Double Glazing Film is a real find!  I have used this film on all my windows for the past two winters and I confirm that it certainly helps keep out the draughts in my old house. It is easy to fit and virtually invisible if fitted properly. I have already recommended it to several people.    June McAuliffe - Croydon, Surrey

      Glazing Film  Used this film last winter and it really made a difference to our draughty windows so bought it again this year and have just installed it. Quick, easy and effective and - virtually invisible!    June McAuliffe - Croydon, Surrey

      Happy with the film, shame about the tape  Despite following all the guidelines, the tape supplied just did not stick.I resorted to using my own. Also take heed of the advice on the corners. The film looks fine and its great fun to see the hot air smooth out the wrinkles to a smooth tight surface. Worth it when tape ok. Happy all in all.    Andrew Lee - Edinburgh

      Excellent product  My Mum using this in the 70's and it was excellent, so after moving in to a very old house and realising how draughty the old windows were, I was pleased to see you could still buy this - very easy to use and you can hardly see its there - and now I have a draught free house! Highly recommended!!    Page - Oxfordshire

    We offer 3 Delivery options in the UK:
    Click and Collect Hove - from 1.99 per order
    Standard UK delivery - from 3.95 per order
    Express UK delivery - from 6.95 per order.

    You'll only ever pay one delivery charge.

    Standard UK delivery is FREE for orders over 50.

    As the actual delivery cost depends on the size of your order, it'll be shown in the checkout when you add to basket.

    Click and Collect in Hove
    If you live in Brighton & Hove, we offer Click and Collect Hove service in association with Black Radish on Portland Road. To use this service, choose Click and Collect Hove from the drop down, and collect from Black Radish, 149 Portland Road when it's convenient, instead of having it delivered to your home or work. We'll let you know when it's ready to pick up.

    Standard Delivery
    We aim to deliver all UK mainland, Channel Islands & Northern Ireland packages within 3-5 working days. Please refer to our delivery page for further details including costs.

    Express Delivery
    We aim to deliver all UK mainland, Channel Islands & Northern Ireland packages within 2 working days or quicker. Please refer to our delivery page for further details including costs.

    If you need same day despatch, please phone us before 11am Monday to Friday.

    How We Send Things
    We send all orders by Royal Mail, or by courier if it's heavy. Royal Mail deliver Monday to Saturday, couriers deliver Monday to Friday.

    Deliveries are usually made between 9am and 5.30pm. A specific time slot cannot be specified with any of our delivery options.

    Please be aware that during our sales or promotions, or when there are circumstances beyond our control such as when there's snow on the roads, delivery may take longer.

    European Delivery is available to selected countries.
    For a full list of all countries that we ship to, and for full details regarding delivery; including delivery time and costs please click here.

    Nigel Says

    Nigel SaysI used this film in our home for several winters (til we got secondary glazing). Was always amazed by how effective it is. It absolutely works, and made sitting in the lounge bearable on cold days.