Install plastic window film - Specially designed plastic window film (also known as home window tinting) is an inexpensive, temporary solution that can help to insulate single pane glass doors during the coldest months of the year. Designed for windows, plastic window film is manufactured to be cut to size and can be tailored to fit any glass surface.

Preparing your sliding glass door for winter is essential to ensure you keep your home energy efficient in the winter, and keep your sliding door in great shape so that it lasts for years to come. By following the steps in the section below, you’ll also ensure that cold air stays outside and your home remains a comfortable place to relax during the winter months. Measure the width of your door: At the bottom, measure the width of the door from one side to the other. Window treatments, such as plastic window film, are another great way to winterproof a sliding patio door. Plastic window film can add an extra layer of insulation to your patio doors, ensuring that you keep your morale up and your energy bills down. Caulk the exterior of the door If your weather strips haven’t been replaced in a while, you could be experiencing air leaks that lead to a temperature loss. If you find that you have a draft in your house when your doors and windows are closed, then new weather stripping may be the solution you need.Measure and cut: Using your measuring tape, carefully measure the length of weather-stripping needed for each area. Cut the strips accordingly using scissors. Most people refer to this strategy as old school, but many of us will agree that it is still effective. Plastic insulation uses shrink-wrap that shrinks when exposed to heat, making it easy to install yet messy. Double-glazed glass tends to be less thermally conductive than the frame into which it’s built. As such, doors which incorporate lots of it tend to be more thermally efficient than you might expect. If it’s triple-glazed glass, then this is especially so. With that said, double-glazing does have a lifespan. If you can see condensation forming between the panels, it means that the seal has failed and that all of the inert, insulating gas has rushed out. That being the case, you might need to replace the glass insert – or, better yet, the entire door.

Wooden French doors tend to be more efficient than their uPVC equivalents because the material is much denser. Heat, therefore, has a far more difficult time passing from one side of the material to the other. Insulating External French Doors Weather-stripping is an effective way to seal gaps around the door frame. It helps create an airtight seal, preventing drafts from entering your home. Follow these steps to apply weather-stripping effectively: While sliding glass doors can provide you with all kinds of benefits in the summer, it’s important to keep them maintained so that they can bring just as much joy in the winter. Take a look at our other informative articles about sliding doors here:Caulk the exterior of the door - Exterior caulk can deteriorate over time. Increase the efficiency of your frame by removing any damaged caulk and carefully replacing it. Choose a high-quality window caulking rope and caulk gel to ensure your work lasts for years to come. If you’ve started to notice condensation in between the panes of glass in your double glazing units, then it is likely that the seal is broken, and the unit will need to be replaced. If you suspect your sliding glass door may be contributing to unwanted temperature fluctuations in your home, here are steps you can take to mitigate the loss of heat and energy. Five Ways to Winterize a Sliding Glass Patio Door The most popular measure of energy efficiency in your home is the U-value. This describes how effective a material is as an insulator. The lower the value, the less heat is able to pass through a given area of material in a given amount of time. It’s typically measured in watts per metre squared. A standard double-glazed window will have a U-value of just under three.