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![Did you know Dunmow](/images/didyouknow.png)
Sound Insulation
Two parameters describe sound insulation; Dw and Rw. Dw is the insulation between rooms. Rw is the lab-tested insulation of a wall/floor...more
![Did you know Dunmow](/images/didyouknow.png)
Reverberation Time
The reverberation time of a room is defined as the time it takes for sound to decay by 60 dB after an abrupt termination...more
Part L2A
Conservation of fuel and power in new builds other than dwellings
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