Part E "Resistance to the Passage of Sound"
All timber framed buildings rely on finishes applied to walls and floors to provide acoustic resistance. There are a number of solutions available and the excellent UKTFA publication "Resistance to the passage of sound" is a good reference document for those seeking to develop their own solution to Part E.
Prestoplan's recommended detail is included in the company's "Design Principles" manual and is recognised as a "Robust Detail".
The relevant Robust Detail number is E-FT-3 for PresWeb joists in separating floors.
Clients also need to be aware that there are a number of situations were robust Details cannot be applied. These include room in the roof, vertically stepped party walls, terraces and buildings without masonry cladding. Clients who wish to build designs with these features may wish to consider testing with a view to submitting new candidate details to Robust Details Ltd.
Party walls are also robust detail compliant with detail numbers E-WT-1 and E-WT-2
House floors are required to meet a 40 dB Rw laboratory rating for Part E compliance. There are two options.
- 22 mm Chipboard, 252 mm PresWeb joist without insulation and 15mm ceiling plasterboard (Test code V13249A) or
- 18 mm Plywood, 252 mm PresWeb joist with 100 mm of 10 kg/cu m insulation and 15mm ceiling plasterboard (Test code V13250A). To refer to the test evidence click the link below.
PresWeb Laboratory Acoustic Test
