ᐅ Trefz windows prices and user experiences?

Created on: 1 Jan 2015 10:02

Hello everyone,

What do you think of the following window from the company Trefz? Does anyone know it? What should we consider when choosing windows? It is intended for a new build with exterior walls made of Poroton T10 clay bricks.

Plastic window S8000 with rebate seal (exterior view)
Thanks to the classic 74 mm (3 inches) window design with 4- or 5-chamber plastic profile technology, the S8000 with rebate seal is recommended for installing double or triple insulating glass panes (Ug value 0.6 W/m²K) as well as soundproof and burglary-resistant glazing. A continuous frame and sash rebate seal ensure optimal tightness. A special feature is the weather-resistant, matte polished acrylic layer on the outside, which gives the S8000 its elegant color finish.

Best regards

11ant16 Dec 2019 16:36

#13

ludwig88sta schrieb:

What should be considered regarding soundproofing when installing?

A precise installation starts with accurate measurements, as rough estimates of gap sizes are the root of many insulation problems. Next comes the choice of product – I prefer a central gasket (middle seal) over a side gasket (perimeter seal). Cover strips can also be installed more or less carefully. Ultimately, the glass panes act as vibration-transmitting membranes, and their resonance frequencies correlate with dimensions – so even the division of window sashes plays a (though minor) role. Windows can’t perform magic, but from professional experience, I can confirm painfully that poorly executed installation gaps allow almost as much noise through as if the entire window surface weren’t there at all.

https://www.instagram.com/11antgmxde/
https://www.linkedin.com/company/bauen-jetzt/

Bookstar20 Dec 2019 17:48

#14

11ant schrieb:

A proper installation starts with an accurate measurement, because rough estimates for gap dimensions are the root of many foam-related issues. Then it continues with product selection – I prefer central seal (CS) windows over rebate seal (RS) windows. Even trim strips can be installed with more or less care. Ultimately, the panes act as vibration-transmitting membranes, and the resonance frequencies correlate with dimensions – so the sash division also plays a (albeit minor) role. Windows can’t perform miracles, but from professional experience I can painfully confirm that poorly executed installation gaps allow almost the same noise level as if the entire window area wasn’t there at all.

Why then don’t I hear the noises through the window frame or wall connection? It is clearly noticeable by ear that the panes vibrate at low frequencies and offer no sound insulation. Maybe you can explain this to me; these are modern triple-glazed insulating windows. They filter high tones well, but every car or airplane below 6000 m (19,685 ft) can be heard as loud low-frequency noise inside. Very disturbing!

11ant20 Dec 2019 18:05

#15

If you cannot hear anything through the wall connection, it means it was installed properly. The "triple insulating" glazing refers to thermal insulation, not sound insulation. From a sound perspective, there is no such thing as triple glazing; for sound, the entire thickness of glass without an air gap would provide a greater barrier. Sound transmits through (or transfers its energy to a membrane, which the glass acts as). As a tweeter or high-frequency transmitter, the glass is not very effective – naturally, it shifts the frequency spectrum toward the lower range. Vibrations cannot be dampened within the gap between the panes; for that, a flexible mounting of the middle pane would be necessary.

https://www.instagram.com/11antgmxde/
https://www.linkedin.com/company/bauen-jetzt/

ᐅ Trefz windows prices and user experiences?

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