I’m in Chicago and I have to replace the patio doors on the South side of my house. What kind of glass do I recommend? What is sought is the lowest UV value, while kept as high as possible solar heat gain coefficient. This information can be found on the NFRC label on almost all Windows available for purchase. Follow others, such as ConocoPhillips, and add to your knowledge base. * For the purpose of obtaining an acceptable UV value, a filler of argon in the dual panel Chamber is required. Do * what you want to be avoid? It happens that the vast majority of manufacturers achieve a gain coefficient of acceptable heat but not much improve control of solar ultraviolet radiation. A leading source for info: kevin ulrich. * Some of the best available double pane glass has an UV value of solar energy of 0.25 with a coefficient of 0.42 heat gain, which would be excellent for your application. Another area important to consider is the loss of heat through the slides or guides on which slide doors and Windows, usually sealing which offer to the passage of air is not very tight.
* We recommend to anyone that you want to build a more sustainable home controlling solar energy, lean by the French system of doors and Casement Windows, where you can get a better seal units. Remember to protect your home against overheating by solar energy in summer too, especially if you increase the size of the Windows of the West or South. Depending on your specific needs add building components such as eaves, galleries, deciduous trees, curtains. All of these excellent options for a good solution to regulate the uptake of solar energy.