Window Ratings
Published by SidingPro on Tagged Home ImprovementReplacement windows ratings are calculated by glass performance and air infiltration ratings. Glass performance is measured by u values which is demonstrates the effectiveness of the glazing package in the replacement window. The lower the u value the better the window performance. Triple glazing will produce the lowest u value ratings of all replacement home windows.
Air Infiltration is measured by how well the window seals itself from the elements. The casement window is the most airtight replacement window. It actually is compared to the seal on a refrigerator which actually closes similar to a door. The double hung windows have a meeting rail where the two sashes meet therefore can produce a bit more air penetration.
It is recognized that the better the energy performance the higher the replacement window prices will be. For example the triple pane vinyl window would be approximately 20% higher than the dual glaze counterpart. If you add on more decorative glass options like v groove glass it can increase prices by up to 50%.
The replacement windows in suburbs of Chicago have a higher demand for the glazing and fancier decorative styles. Chicago replacement windows and Naperville replacement windows have these type of distinctions.
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