Most assume that all such glass spaces must be this way; be assured, this is not the case. Just as all cars are not built alike, all sunrooms, solariums, conservatories, and/or greenhouses are not. This is, in part, why we tend not to randomly categorize the spaces that Perma-Wood builds into one of the aforementioned groupings; the terms get used so loosely in the industry today that it is more accurate for us to simply say that we build “ additions”, albeit “glass” additions. With this goal in mind, there are really two major factors that contribute to climate control. The first is Mechanical (i.e. heating and cooling) and of course the second is the “Glass”. Technology in the glass industry has changed tremendously in the last 20+ years – no different really than many of the other things that are a part of our everyday life today: flat screen TVs, iPods, Blackberrys and the rest. Whereas the average R value (winter measurement of window resistance to heat transfer) of a window in the homes that many of us grew up in was a not so lofty R1 or R2, we recently built and installed a room in the Toronto area with R16 windows! The same can be said about the summertime performance with relative heat gain numbers being achieved today that are in the order of 600% more efficient than the typical clear double glazed window many of us have in our homes. By combining this quality of glass product, with proper mechanical consideration, as defined by our HVAC engineer, the room that results has the ability to readily achieve year round comfort in the harsh Canadian climate in which we live. This is why we commonly tell potential clients who want to use this room as living space: “if we are going to build a glass room in Canada, where summertime temperatures can reach 35 degrees Celsius and wintertime temperature can fall to -35, best to do it once, do it right, or don’t do it at all”.