Winsa is responsible for providing the FÜK and Technical File on CE marking to its dealers and/or manufacturers with a signed contract. Dealers and/or distributors, Winsa's

They can use the ITT results made by notified bodies only if they produce in accordance with the FÜK and Technical File.

The mandatory tests for window performance under the CE marking are as follows:

1.) Air Permeability: It is determined by air permeability test. With this test, the air permeability of the window against pressures at different levels applied to the window is determined.

losses are measured. In grades 1 to 4, the best grade is 4.

2.) Water Permeability: Determined by the water permeability test. This test measures the performance of the window in rain and high winds. Unpressurized

In the initial test, the window is subjected to a gradual increase in pressure and classified according to its performance.

3.) Resistance to Wind Load: It is determined by wind load resistance test. The joinery is subjected to positive and negative test pressures. At each test pressure, The resistance to damage due to wind loads and the amount of deflection perpendicular to the surface are measured and evaluated. In addition, the specimen is subjected to positive and negative

50 cycles with pressures are applied.

4.)Acoustic Performance: Acoustic performance can be determined in 2 ways. First, it is determined by sound insulation testing. Secondly the acoustic performance of the window,

Depending on the sound insulation value of the glass, it can also be calculated by the tabular method.

The acoustic performance of the window is described as Rw (C;Ctr). What needs to be done in the table method is to first obtain the Rw (C;Ctr) values of the glass used from the manufacturer.

to learn and with the help of the table, the sound reduction of the window depending on the variables such as window type, window dimensions, air permeability and number of seals, etc.

coefficient.

5.) Thermal conductivity (U-value) of the window: It can be done by computer calculation through thermal simulation or by the experimental method (hot box). The test method is more

It gives good results but is more expensive.

In the hot box method, a 1.4 m long double hinged, sheet metal and gasketed frame-wing section is placed in the test rig. The chamber surfaces outside the profile are insulated. Heat is supplied from the heat source inside the room. Heat loss i.e. Delta Q value is determined. The total profile area is calculated in m2. Temperature from internal and external temperatures

The difference is determined by Delta T.