Digest 338 Insulation against external noise

Publication Year

1988

Document Status

Archived

Abstract

Explains how the external envelope of a building (the windows, walls and roof) affects the level of noise that is transmitted from outside to inside. It depends on a number of factors: the mass of the envelope, its continuity and the extra insulation afforded by double-leaf construction. There are also certain planning measures that will minimise the exposure to outside noise. The proportion of wall area that is occupied by window glazing has an appreciable effect on the overall performance of the window/wall area unless the windows are designed to a standard that matches the wall construction. Open windows greatly reduce the overall performance. It is therefore necessary to consider the ventilation needs of buildings in noisy locations.

Document History

Whilst this publication can still be purchased some of the information in it has been superseded by more recent research and standards. The BRE Group does not accept any responsibility whatsoever for any loss or damage, including - without limitation - indirect or consequential loss or damage arising from use, or loss of use, of data or profits arising out of, or in connection with, the use of this document. Replaces - BRE Digest 128 and 129.

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