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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

Good Hearing?
A typical person with good hearing can hear from about 20Hz to 20kHz (the audio bandwidth). A person's voice will usually range from 500Hz to 2kHz...more
Part L1B
Conservation of fuel and power in Existing Dwellings

Builth Wells - SAP Extension Assessment - 029 2193 0147
The office that covers this area is: Cardiff
Phone Number: 029 2193 0147 Email: builth-wells@e2consultants.co.uk
Our other services include:
SAP Extension Assessment can also be known as:
SAP Extension Calculations,


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