Do you know…
Windows can account for between 10 and 25 percent of the total energy consumption for the heating and cooling of the average home?

Do you know…
New window technology such as low-E glass, warm edge spacers and insulating frames can improve window performance by as much as 45 percent?

Do you know…
You can purchase the very finest window on the market and if it is not installed properly you will still feel drafts and lose valuable heating and cooling through your windows?

Do you know…
Energy efficient windows can help reduce the peak heating and cooling loads in your home helping you to keep more consistent heating and cooling in your home as well as reducing the draw?

At Contractor's Building Supply we are always on the lookout for ways we can help you save green by going green. One of the simplest and most effective way to reduce your utility bills is by replacing old, worn and drafty windows with

In recent years there have been many advancements in window components including low-e glass, warm edge spacers and more efficient insulating frames.

Thermolock has stayed ahead of the game with some of the most advanced technology in the market to provide you with a high performing window at a price you can afford. Thermolock windows will provide you with years of comfort with little or no maintenance.

Whether you are looking for replacement windows or are building a new home our windows can provide you with beautiful choices.

Contractor's Building Supply is a Proud Energy Star partner. With windows rated by the National Fenestration Rating Council you can be assured you will receive only the finest products. Beginning with our friendly and knowledgeable customer service staff, to our prompt and courteous delivery staff all the way through our installation and service crews your satisfaction is our utmost priority.

•  The difference between the performance of cold edge spacers and the best warm edge spacers is an approximate 0.4 U-value, or a difference of approximately 1,600 pounds of CO2 per home per year. This also translates into as much as $205 in heating energy costs, not to mention less condensation and a more comfortable living space. Results modeled using Resfen 5.0 and converted to CO2 based on conversion data from www.eia.doe.gov energy calculator.
• Given that windows have an average lifespan of 20 years, this means a reduction in the environment of nearly 16 tons of CO2 production over the life of that window system (extrapolated from calculation above).
• If every home in America had the most efficient warm edge spacers, it would reduce the amount of CO2 in the environment by more than 56 million tons a year (extrapolated from calculation above).
• If just every new window installed had the most efficient warm edge spacer, the environment would be spared three million tons of CO2 a year (extrapolated from calculation above).
• Because it takes three trees to absorb one ton of CO2, it would take nine million trees just to absorb the CO2 produced by one year’s worth of inefficient windows (three trees for one ton of CO2 is taken from Climate Change Calculator on www.americanforests.org).
• Using the same calculations, the difference between the old standard windows and today’s high performance products is even more dramatic. A typical 2,000-square-foot home with 300 square feet of windows featuring double-glazed clear glass, standard spacers and no argon will produce 5.3 tons more of CO2 per year, compared to the high performance windows featuring the best warm edge spacer, low-E glass and argon gas. A single-glazed window with clear glass will require 8.8 tons more of energy-related CO2 production to heat and cool the home annually.