Internal Doors

As previously posted, it had been decided to construct the internal acoustic doors from MDF. However, it has now been discovered that a local company stock 686 wide Fire Rated doors, 44mm thick for just £32 inc. VAT. These are much denser and thicker than standard hollow core internal doors, so it has been decided to opt for these. At first, these doors will be installed as they are, but if they do not perform as well as expected, they will be uprated by applying a layer of T60 High Performance Acoustic Membrane onto one side, together with a layer of 25mm duct foam - thanks to www.customaudiodesigns.co.uk for this useful information. The T60 is stated to increase the SRI by upto 25.2dB, so a double door arrangement made from these products should perform extremely well.