A sliding glass door can be a great source of heat loss in the home. Many homes and apartments sport these doors. They are attractive, especially when they look out upon a splendid garden or patio where tea is served by gloved butlers, and you can get a few laughs when people mistakenly plow into them. However, they sure aren't doing you any favors energy-wise.
There are ways to make sliding glass doors more energy efficient. Here are some tips.
How to Insulate Sliding Glass Doors
1. If your sliding glass doors run on a track, keep the track clean. If rocks, gravel and clumps of dirt have fallen into the threshold, the door may not be set correctly on the track. This allows cold air in or air-conditioned air out.
2. Caulk around the edges of the sliding glass doors. If you've recently moved into a domicile that has sliding glass doors, those doors may have been put in haphazardly or their weight may have shifted. It's advised that you properly seal the cracks where the doors meets the house.
4. Double-glazed inserts can be installed to existing sliding doors. You will have to take the doors apart.
5. Build it Solar has a novel method of insulating sliding glass doors. They affixed an insulation panel to their sliding glass. This panel slides on the same track as the door. Pretty neat stuff. They saved $40 per winter and 200lb of CO2.