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26/03/15
In medical centers silence is one of the prior points. Doctor will not be able to receive patients, and for patients after surgery it will be more difficult to recover quickly if case of persistant hum of cars and annoying rumble, whistle, rattle, and other external irritants. The only solution in such a situation is to install PVC Windows as the best protection against noise.
Let's talk about the noise.
In the modern world there are health standards for acceptable level of noise in the premises. Afternoon acceptable level should not exceed 40 dB, and in the night it mustn't exceed 30 dB. Continuous traffic, construction sites near houses and industrial plants - all this creates 80 dB level of noise. Therefore, the main task of plastic windows is not just to save from noise, but to reduce its level by about 40-45 dB.
In average, plastic windows with ordinary glass provide noise reduction on 26-31 dB. If the glazing consists from several leaves of glass of different thickness or distance the noise can be reduced at 32-33 dB.
Factors influencing the soundproof characteristics of PVC windows:
• Glass thickness. Installation of glass with different thickness will reduce noise by 5 dB.
• The value of the air gap between the panes. The greater this distance the better the sound insulation properties. It is better if the thickness of the air chambers will be different too.
• Tightness of the porch. PVC window must contain at least two sealing gaskets between the constituent elements.
• Accessories should be of high quality, well-regulated, providing a snug fit of the window sashes to the frame.
• Proper installation plays an important role, mounting seams should be of high quality. Sections which were improper processed with foam can nullify all the efforts.
Which kind of windows would you prefer If you were going to replace the old ones in your house or apartment?