Offices Nationwide
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
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
Part L1A
Conservation of fuel and power IN NEW DWELLINGS
Our other services include:
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C4SH can also be known as:
CSH, Code for Sustainable Homes, Code Assessment, Sustainable Homes, Code for Sustainable Homes Daylight Calculation,
Copyright 2026 E2 Specialist Consultants Limited
Company No. 06728970
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