Glass Insulation

What About It?


As windows are notoriously poor at insulating buildings, some manufacturers have developed speciality insulating films. These films are designed to be installed directly to your existing glazing and can increase the insulating properties of your windows by >41%.

As a cost effective alternative to window replacement these films meet the needs of the more cost conscious project manager or home owner. Perfect for listed building managers that cannot install double or triple glazing or for homeowners that do not wish to go through the hassle and expense of replacing their current windows with upgraded double or triple glazing.

As a comparison, these films give close to the same benefits as upgrading your windows with an extra pane of glass at a fraction of the cost and an ROI through energy savings in as much as 5% of the time it takes window replacement to pay back.

Benefits of Insulating Window Films.


  • Up to 41% winter heat loss reduction.
  • Up to 44% summer heat gain reduction.
  • Rejects 99% of UV rays reducing the risk of skin cancer and the fading of furniture and furnishings.
  • Promotes comfortable indoor temperatures in every season, day and night.
  • Increases year round energy savings and reduces your carbon footprint.
  • Allows maximum light into your home with minimal solar heat.
  • Enhances your views from the inside out by lowering interior reflection.
  • Can provide some added privacy from the outside.
  • Helps prevent hot and cold spots near windows around your premises

Are the films for this service tinted/reflective?


Our most recommended film for insulating properties has very high visible light transmittance with just enough “tint” to break harsh light, you can barely tell it’s on the window. Reflections are a common concern of a lot of our new customers. You’ll find that the interior light reflectance is marginally lower than that of glass without film and the exterior is marginally more reflective. This ensures that your view from the inside is close to perfect, by that we mean better than without film!

Warranty Details.


  • Warranty Length: 16 Years


  • Discolouration
  • Peeling
  • Hazing
  • Delamination
  • Crazing
  • Bubbling

All of our jobs are covered by a manufacturer backed warranty. You and your installer will complete a short warranty form on the day of your installation. This should be kept with a copy of your invoice from us. We will always be your first port of call if you experience any issues covered by warranty during the stated period. If, for some reason, you can’t get hold of us if there’s a problem, you can contact your nearest authorised installer for that film and the manufacturer will cover all the costs involved with rectifying the issue, as long as it’s covered in the warranty criteria.

Why choose Perthshire Window Films?


Because we’re the best! We’ve chosen our products not for ease of installation or because they’re cheap! We’ve chosen to supply our customers with some of the most superior products on the market right now. We continuously develop our knowledge, our staff skill sets and our understanding of what you, our customers expect. We do more than just install film. First we make sure that a window film will actually serve you well, will it solve the problem you have, in the way you need it solved? Then we determine if you’re glazing is suitable for the type of film you need to solve your problem, we come to your home, project site or place of work, wherever the glass in question is situated. We test your glass using specialised meters and detectors to determine its structure, is it monolithic, float, toughened, laminated etc… Your ideal film will be offered to you based on all the data we collect about your needs and your glazing structure. Only then will we discuss installation, there’s no point wasting your time. In the end, all we care about is making you happy! If we can give you years of problem free comfort in your home, you’ll almost certainly speak highly of us and what we do. We are fully insured to work on your glazing in your property. Don’t waste your time, speak to the professionals today.