Here's a 10mm thick, heavy rubber/Felt composite that has pretty good sound insulation properties.

A bonded layer of dense felt with a bonded layer of granulated rubber.

Easily cut with a sharp knife or heavy scissors.

Sold in multiples of 1mtr length from a 1.37mtr wide roll - 1.3 Square Metres.

Maximum length in one piece 7mtrs (10 square metres.)

Weight 2.2 Kg per square metre.

NOTE: We recommend using this felt side down.

RUBBERFELT #RUBFELT