24-08-2019, 11:21 AM
I used this. At 6 mm thick it has a bit of weight to it and I think it has helped dampen some of the sound. Found it quite easy to cut.
https://www.amazon.co.uk/gp/product/B00A...UTF8&psc=1
Ian
https://www.amazon.co.uk/gp/product/B00A...UTF8&psc=1
Ian