Some storm windows have fixed, full length screens and glass panels that slide out of the way for ventilation. Some are easily removed for cleaning, others are not. All of these features add some convenience and higher costs. When selecting weatherstripping, you should consider the durability of the material as well as what would work best for what you are weatherstripping. Bent metal weatherstripping is also one of the most expensive weatherstripping materials.
Bent plastics are similar to the bent metals, but are less expensive.
They are also less durable. Most rubber and foam materials stay flexible for years, are inexpensive, easily replaced and effectively seal air leaks. You should choose the appropriate door sweeps and thresholds for the bottom of the doors as well. For the best possible results from your investment, you should make certain that the weatherstripping material will stay flexible under extreme weather conditions. Also be sure to follow the manufacturer s instructions.