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![Did you know Porthmadog](/images/didyouknow.png)
The Decibel Scale
Gives an approx of human perception of loudness. This is because the human ear has a logarithmic response to changes in sound level...more
![Did you know Porthmadog](/images/didyouknow.png)
Sound Absorption
The loss of sound energy when sound waves come into contact with an absorbent material such as ceilings, walls, floors and other objects...more
Part L1A
Conservation of fuel and power IN NEW DWELLINGS
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Sound Testing HMO Quote in Porthmadog
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