How to choose PVC windows and doors
First PVC were installed in Germany than 25 years ago , their design meaning a big step in ensuring comfort and thermal insulation of houses at the highest level .
Unlike a normal window , wood , PVC windows, bring us many advantages
- require no maintenance works (eg to be painted )
- provide increased thermal insulation
- Increased insulation
- Sustainability ( by several 10 year guarantee on PVC profiles)
- and not least reliability
When it comes to choose the best windows for your home ou should note that there are several models on the market and cataloging classes of these profiles .
Depending on the thickness of the outer wall of the main profile , for example , they fall into three classes A, B and C. Class A minimum thickness of main wall should be less than or equal to 2.8 mm for the visible surface and greater than or equal to 2.5 mm for the surface which is not seen. For Class B , the minimum amount of main wall should be less than or equal to 2.5 mm for the visible surface and greater than or equal to 2.0 mm for the surface that is not visible . This classification profiles after wall thickness is designed to illustrate the variation of the profile and the window for various common applications in Europe.
The standard also shows quality requirements such as the layout, dimensions and tolerances , weight , contractility , mechanical shock resistance behavior after heating to 150 ° , aging resistance and weldability test .
For a quick comparison , you need to know that the price difference between a profile of class A and one class B is 10-12 percent , but the life of the class to rise by at least 20 % over that of class B.