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This guide is designed for a home owner in UK with no window or construction experience. [url=http://www.getconversational.com]hollister france[/url] It is intended to teach you the basic terms sales professionals will use when you receive an estimate. And more importantly, this guide is designed to show you how to perform an ?apples to apples? comparison of different double glazing.
Rating Organizations Many double glazed window sales professionals will perform show while in your home, talking about their double glazing great features and demonstrating it?s performance. While these shows can be fun, and include a lot of great sounding terms like 7th [url=http://www.rtnagel.com/louboutin.php]louboutin pas cher[/url] generation self cleaning coat, they do NOT show you how to compare two different kind of double glazing. Luckily for you, there are two non-profit industry organizations that perform scientific tests on double glazing and make the results available for free. The bfrc.org Your sales representative should [url=http://www.achbanker.com/home.php]www.achbanker.com/home.php[/url] be [url=http://www.vivid-host.com/barbour.htm]www.vivid-host.com/barbour.htm[/url] able to provide you with all the rating for the double glazed windows they are presenting. And if the sales representative won?t provide you with this information it probably means he doesn?t want you to know how his window performed, or possibly even more alarming he doesn?t know the product he is presenting.
The glass of a window makes up a majority of the surface area of a window and results in most of the heat loss. That is why most sales professionals will spend time explaining something like their unique 12th generation film coat Low E, with 16mm super spacer between the glass, or they might bring in a heat source (heat lamp or torch) and a heat meter to show how much heat transfers from one side of the glass to the other.
While all these demonstrations may be fun, as mentioned above BFRC provides the results of tests conducted in laboratories with controlled settings that are much more precise than can be achieved in your home.The most often talked about number in glass performance is the U-Value. U-factor is a measure of how well a window prevents heat from escaping your home, and the lower the U-Factor the better the window is at preventing heat from escaping. While Ufactors
generally range from a high of 1.2 to a low of 0.17, it is important to make sure you purchase a window with a U-factor of 0.30 or less, as 0.30 is the highest U-factor that is eligible for a federal tax credit under the new 2009 stimulus package. (Note: while a lower U-factor demonstrates better performance, there may be a point where you won?t see a full return on your extra investment if you don?t stay in your home for a very long [url=http://www.getconversational.com]hollister pas cher[/url] time.)
Some sales professionals like to talk about R-value. R-value is similar to U-Value in that it is a measure of how much heat transfers from one side of the glass to the other, and used to be the way double glazed windows were compared for heat loss. However the industry has moved away from U-value as it is only a measure of heat loss at the center of the glass, where as energy rating is a measure of heat loss across the whole window. The next measure of heat transference is the Solar Heat Gain Coefficient (Solar Gain). Solar Gain is a measurement of how well a window keeps heat from the sun from entering your home (radiation heat). Solar Gain is measured as a value between 1 and 0, and [url=http://www.hanesmorgan.com]hollister outlet[/url] the lower the Solar Gain the better a window is at keeping heat from the sun out of your home.
And while sales professionals may demonstrate the energy efficiency of their glass with various tools in your home, you can compare apples to apples by looking at the U-factor and Solar Gain.
At the end of the day, it doesn?t matter if a window has [url=http://www.mansmanifesto.com]doudoune moncler homme[/url] patented special technology, with all the bells and whistles, all that matters is how well your windows keep your heat in your home
during the winter, and the cold in your home during the summer.
The seal and strength, While no window manufacturer likes to admit it, all double glazed windows leak some air. Again there are laboratories that test how much air a window leaks, and provide an Air Leakage (AL) measurement.
Some manufacturers like to talk about the strength of their window. While all residential
windows are required to meet minimum standards for certification, a stronger window can be indicative of a better constructed window which will stand the test of time better. Windows strength is measured by the amount of wind it can successfully resist, with a number known as Design Pressure. Even the best window will perform poorly when improperly installed. [url=http://www.mansmanifesto.com]www.mansmanifesto.com[/url] That is why it is important to choose a company that will install your windows properly. While it is usually impractical to inspect the company?s work, there are some easy ways to get an idea of how a company performs. Only buy from companies [url=http://www.sandvikfw.net/shopuk.php]hollister outlet sale[/url] that stand behind what they are selling. Some companies will sell you a window and tell you service will be handled by the manufacturer. While they may promote the idea of having a factory representative come out and service your windows, this could lead to you being stuck in the middle of argument. Almost every manufacturer?s warranty does NOT cover improper installation. So when the factory representative comes out and inspects the windows, he or she may tell you the windows were installed incorrectly, and you need to see the company you purchased the windows from. The company you purchased the double glazed windows from may say the windows were installed correctly, and to see the manufacturer. Where as, if the company who installed the double glazing comes out to fix the windows, they won?t try passing the [url=http://www.msc-sahc.org/moncler.asp]moncler doudoune[/url] buck as there is no one to pass the buck to, and you will get your windows repaired.
A life time warranty is only good for the life time of the company offering the warranty. The average life expectancy of a new home improvement company is less than 3 years. In fact some unscrupulous businessmen have been known to start a company, run it for a few years offering to fix everything for free forever, [url=http://www.vivid-host.com/barbour.htm]barbour uk outlet[/url] and then go out of business a couple of years later. Then, shortly after going out of business, start a new company and begin the cycle again. To avoid this, make sure and ask how long the company has been in business (the author recommends 15 years or more).
Another thing you can do to ensure you are not dealing with a fly-by-night company is ask if they have a show room. Additionally, check out their website. If the website doesn?t look professional, the company probably isn?t either.
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Lee [url=http://www.rivaluta.it/hot/hogan.asp]hogan outlet[/url] Crouch from Double Glazing Shop has written many guides including and
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