WHY REPLACE OLD WINDOWS?
The Learning Center
If you are looking for ways to improve the performance of your existing windows, significant energy savings can be achieved simply by
applying the measures found below.
Install weather-stripping. Loose-fitting windows are a major source of air leaks. Installing weather-stripping closes the gaps between the
window sash and frame on vertically and horizontally sliding windows and casement windows. The area where the two sashes meet in
the center of a double hung (vertically sliding) window also should be weather-stripped. A basic rule is to use weather-stripping in
junctures of surfaces that move or slide together, and to use caulk on the non-moving parts.
Apply caulk on the inside where the window frame meets the wall to seal another potential source of air leaks. Caulk can also be applied
between the frame and sash on permanent non-sliding sections. Although exterior caulking is important for weatherproofing, it does little
to save energy. Interior caulking at window and door penetrations, on the other hand, can have a major effect on energy use and
household comfort.
Replacing sashes or re-glazing a window are alternatives to replacing an entire unit. Window manufacturers have combined the benefits
of new glazing technologies with compact replacement tracks. These new systems make window upgrades a cost effective alternative.
The value of this investment depends on the condition of your existing window frame. If your frame is in good condition and you are
willing to maintain it, a replacement window package may be a great investment. Use the U-factor and Solar Heat Gain Coefficient as
tools in choosing your new windows.
< back to list of questions about replacing windows
5. Can I improve the energy efficiency of my existing windows?
3245 Miracle Drive
Murrysville, PA 15668
724-387-2991
PA Contractor ID
PA001856
The Learning Center
If you are looking for ways to improve the performance of your existing windows, significant energy savings can be achieved simply by
applying the measures found below.
Install weather-stripping. Loose-fitting windows are a major source of air leaks. Installing weather-stripping closes the gaps between the
window sash and frame on vertically and horizontally sliding windows and casement windows. The area where the two sashes meet in
the center of a double hung (vertically sliding) window also should be weather-stripped. A basic rule is to use weather-stripping in
junctures of surfaces that move or slide together, and to use caulk on the non-moving parts.
Apply caulk on the inside where the window frame meets the wall to seal another potential source of air leaks. Caulk can also be applied
between the frame and sash on permanent non-sliding sections. Although exterior caulking is important for weatherproofing, it does little
to save energy. Interior caulking at window and door penetrations, on the other hand, can have a major effect on energy use and
household comfort.
Replacing sashes or re-glazing a window are alternatives to replacing an entire unit. Window manufacturers have combined the benefits
of new glazing technologies with compact replacement tracks. These new systems make window upgrades a cost effective alternative.
The value of this investment depends on the condition of your existing window frame. If your frame is in good condition and you are
willing to maintain it, a replacement window package may be a great investment. Use the U-factor and Solar Heat Gain Coefficient as
tools in choosing your new windows.
< back to list of questions about replacing windows
5. Can I improve the energy efficiency of my existing windows?
3245 Miracle Drive
Murrysville, PA 15668
724-387-2991
PA Contractor ID
PA001856
