Energy-Efficient Window FAQs

Energy-efficient windows are undoubtedly in demand right now, but a lot of homeowners are curious about why that is the case. To shed more light on the matter, our experts have answered some of the most common questions about energy-efficient replacement windows.

What Is Insulated Glass?

Many energy-efficient windows are often said to have “insulated glass.” This refers to units that feature two or more separate glass panes separated by insulation. Although the glass panes in themselves are not insulated, the gap between them combined with the sealant improves the window’s thermal efficiency.

What Is a Gas Fill?

High-end, energy-efficient windows may have special gas-fill panes. According to our window replacement experts, the term “gas fill” refers to the inert gas used to fill up the gap between individual glass panes. The gas has better thermal-resistance than regular air, further enhancing the insulating qualities of vinyl windows.

What Is Low-E Glass?

Low-E, or Low-emittance, glass is a type of glass that is capable of significantly reducing the amount of heat and ultraviolet rays that pass through the glass surface. This is made possible by a special coating. The coating may be tinted with a gray or greenish shade, but low-E glass with clear coatings are also available.

What are U and R-values?

The U-value and the R-value are two important values that denote the level of insulation provided by something. However, wood window installation experts will almost exclusively use “U-value” because it’s a term specific to windows and doors. The R-value works in a similar way, but it is used in relation to walls, the roof and other parts of the home where U-value doesn’t translate well.

Get energy-efficient windows installed by our team of experts. Homecraft® Inc. is the leading home exterior contractor in Newark, Middleton and Bear, DE. Call us at (302) 703-1109 or fill out this contact form to request a quote.