Storm windows are one way that people use to reduce their utility bill. Good storm windows keep the warmth inside in the winter and the cold insider during the summer. They help to reduce drafts, frost and water condensation. Several standard colors that should allow homeowners to find a complimentary color.
The absolute simplest form of a storm window is to fasten a clear, heavy-duty plastic sheet to the inside of the window. There are also storm window kits that fit on the inside of your existing windows. These are a good option if you are concerned about the amount of money that it takes to have new windows installed. Or you may have a historic or other old house and do not wish the original parts to be changed. There are several methods of attachment for reusable rigid interior storm windows, but the best contain magnetic frames. They are also the easiest the install for the do-it-yourself type. Some care will be needed if the panes are removed for natural window use so that they are not scratched or damaged.
Exterior storm windows are harder to install and maintain. Since they are exposed to more weather, they may not last as long as interior storm windows. In some cases, it is more cost effective to replace the window. Many interior and exterior removable storm windows come with a coating that reduces UV light. This can save fading of furniture and rugs as well as keep the room cooler.
The other option is to have the whole window unit replaced. There are many options from vinyl, aluminum and wood casings, with or without screens or shutters. Research each type that you think you would like and get estimates. There are two track, triple track and two track slider storm window types. Be sure to get windows that are appropriate for your climate. The Energy Star program has divided the United States into four areas with recommendations for each one.
The supplier should make exact measurements of each window to be replaced. Look at the corner joints when examining windows from different manufacturers. Overlapped corner joints are better than mitered corners. If you can see through the corner even a tiny bit, you will have leaks. Check the hardware used for the locks and catches. Good quality is a sign of good construction.
After the windows are installed, be sure to check the sashes for each window. Slide the window and screen, if applicable, up and down several times. The movement should be smooth with no catches. If there are problems with catching, there was probably misalignment during installation and should be fixed before signing off on the work.
You may run across several ratings. The U-factor is meant to measure the rate of heat transfer between inside and outside. The lower the U-factor, the better it insulates. Most U-factors fall between .2 - 1.20. There is also a Solar Heat Gain Coefficient (SHGC) that is a measure of the proportion of solar energy entering a building. The lower the number, the better shielding it has. Typical numbers fall between zero and one.
