How to Weather-Proof Commercial Windows

11/12/2019

As winter approaches, it’s time to take steps to ensure your windows will last through the season as well as provide thermal comfort for your building’s occupants.
FacilitiesNet offers the following advice for weather-proofing commercial windows:

Windows have long been a source of excessive heat loss due to non-energy-efficient materials and components. Now, material technology has advanced to the point where not only are energy-efficient replacement windows available, but methods exist to increase the energy efficiency of existing windows.

If the existing windows are old and inefficient, replacing them may be the best option. Modern energy-efficient windows generally pay for themselves through lower heating and cooling costs and — in some cases — reduced lighting costs. Energy-efficient methods and materials now available include these:

• • In colder climates, major glazing should face south to collect solar heat during the winter.
  • In warm climates, install overhangs or films on the sun’s side to prevent excessive heat gain.
  • Windows should allow for adequate daylight, but facility managers should plan to minimize heat gain and glare with film, shading, etc., based on the orientation of the windows
  • Windows with low solar heat gain coefficients (SHGCs) are more effective in reducing cooling loads.
  • When selecting windows for energy efficiency, consider their energy performance ratings in relation to the climate where the building is located.
  • A window’s energy efficiency is based on all of its components. For instance, window frames conduct heat and should be considered carefully when selecting a window assembly.
  • The type of glazing used should be determined by the building’s orientation, climate, design, and other similar factors.

When keeping existing windows, consider these three main options: adding storm windows, weather stripping, or using weather coverings. Adding storm windows reduces air leakage and improves comfort. Applying weather stripping at joint openings eliminates heat loss. Window treatments, such as film, can reduce heat loss in the winter and heat gain in the summer.

With these weather-proofing options, your windows can be ready for the cold winter season. Do you need new energy-efficient windows ahead of the winter season? Contact our team today to find the best solution to fit your needs.