When does noise become “annoying”?
A common conclusion is that noise typically starts to annoy people in a day-to-day situation when the sound levels exceed 63 decibels for more than 10% of the time, this being approximately 6 minutes in the hour. When this 63 decibel level is sustained for more that 10% of the time or if it rises over 68 decibels, the number of people who will report annoyance increases rapidly.
The key to understanding the benefits of retrofit secondary double glazing for noise control, is to acknowledge that by taking the edge off the noise you will create a more comfortable living environment. MagicSeal Retrofit Secondary Double Glazing aims to knock the peak noise down by between 5-13 decibels, of the noise traveling through the window. The sound may peak above the ‘annoying’ level from time to time, but the cumulative effect of these peaks is lessened over the hour because of the increased acoustic insulation MagicSeal can provide.
A quieter living environment. (How it Works)
For acoustic benefits MagicSeal Retrofit Secondary Double Glazing is fitted to the existing window in such a way as to maximize the air space between the pane of glass and the MagicSeal panel.
With the aid of our unique magnetic sealing system the large sealed air gap acts as an insulation baffle in which some of the sound making its way through the first pane dissipates after bouncing off the second pane, therefore reducing the amount of sound transmitted through the window.
Due to different types of material (acrylic over glass) both panes vibrate and pass different frequencies at varying time intervals thereby damping down the noise waves. In other words both panes DO NOT vibrate in sympathy as a double glass unit would. Therefore MagicSeal’s Retrofit Secondary Double Glazing totally out performs a standard Double Glazing unit (DGU)
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Tested and Proven Results
MagicSeal’s Retrofit Secondary Double Glazing window system has been independently tested under the Window Energy Rating Scheme (WERS) in line with National Fenestration Rating Council (NFRC) regulations.