Using Secondary Glazing to reduce noise

For technical information on Noise Reduction and Easyfix DIY secondary glazing products, visit our online purchasing site, starting at this page www.secondaryd...
Apart from retaining heat, Secondary Glazing reduces invasive noise. We experiment with a car horn and noise meter to demonstrate the reductions possible with Easyfix DIY Secondary Glazing.

[@shishishi7256]

Do u working in canada

[@agfdsa123]

The 2ndary glazing sounded like no significant effect & maybe too thin?

[@xTheITx]

Unfortunately microphones vary their volume automatically, so you can't judge by the sound you hear in the video, hence why they're using a sound meter

[@engineeringvision9507]

15dB is a lot