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Understanding and controlling the ingress of driven rain through exposed, solid wall masonry structures

By
Elizabeth A. Laycock
Elizabeth A. Laycock
Sheffield Hallam University, City Campus, Howard Street, Sheffield S1 1WB, UK
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Christopher Wood
Christopher Wood
English Heritage, 1 Waterhouse Square, 138–142 Holborn, London EC1N 2ST, UK
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Published:
January 01, 2014

Abstract

Long-term performance of historic buildings can be affected by many environmental factors, some of which become more apparent as the competence of the fabric deteriorates. Many tall historic buildings suffer from water ingress when exposed to driving rain conditions, particularly church towers in the SW of England. It is important to recognize that leakage can occur not only through flaws in the roof of a building but also through significant thicknesses of solid masonry. Identification of the most appropriate intervention requires an understanding of the way in which water might enter the structure and the assessment of potential repair options. While the full work schedule used an integrated assessment involving laboratory, field and archival work to assess the repairs that might be undertaken on these solid wall structures, this paper focuses on the laboratory work carried out to inform the writing of a Technical Advice Note on the effects of wind-driven rain and moisture movement in historic structures. The laboratory work showed that grouting and rendering were effective at reducing water penetration without retarding drying rates, and that use of internal plastering also had a very beneficial effect.

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Contents

Geological Society, London, Special Publications

Stone in Historic Buildings: Characterization and Performance

J. Cassar
J. Cassar
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M. G. Winter
M. G. Winter
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B. R. Marker
B. R. Marker
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N. R. G. Walton
N. R. G. Walton
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D. C. Entwisle
D. C. Entwisle
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E. N. Bromhead
E. N. Bromhead
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J. W. N. Smith
J. W. N. Smith
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Geological Society of London
Volume
391
ISBN electronic:
9781862396678
Publication date:
January 01, 2014

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