Bre Digest 361 Do Buildings Cracked

Many of the ways in which cracking can be produced in buildings are discussed in Digests 359 and 361. One of the many causes of damage is.

• • Title • Why do buildings crack? Other Authors • Building Research Establishment Published • Garston, Watford: Building Research Establishment, 1991. Physical Description • 12 p.: col. Series • • Subjects • • • • • • • • • • • • • • • • Summary • This Digest examines the causes of cracking in buildings and shows, with descriptions and illustrations, the visible results of a wide range of problems.

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The Digest is a key to other, more specialised, BRE Digests and other publications and does not contain a complete solution to every cracking problem. It aims to broaden the understanding of the factors responsible and increase the likelihood of correct diagnosis and repair. Avoidance of some of the pitfalls will minimise future trouble in new buildings and lead to better design and workmanship. This Digest replaces Digest 75 which is now withdrawn. Notes • Caption title.

• Replaces Digest 75. • Includes bibliographical references (p. 12) Language • English ISBN • Libraries Australia ID • Contributed by Get this edition.

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Photo of Rising Damp Rising damp is a condition caused by ground moisture rising up a masonry wall by capillary action. It often occurs where there is no damp-proof course (DPC) or where the DPC has been damaged or bridged. Older houses were built without damp-proof courses or with a barrier material that is liable to failure. The result of rising damp on the inner wall is visible as a darker patch on the plaster lining of the inner wall, usually starting at floor level on the ground floor and rising up from there, hence the term. In extreme cases, salt leached out of the wall forms crystals on the surface of the plaster as the water evaporates. Needless to say, the appearance of rising damp.

Photo of Penetrating Dampness Penetrating dampness is defined as the entry of water into the masonry and external fabric of a building. Symptoms will usually only occur during wet weather. A watermark might appear, and grow if the water continues to enter. If not fixed, plaster may start to perish. Penetrating damp can sometimes be caused by gutter or roof problems which have allowed rainwater to spill onto and saturate areas of wall. Penetrating damp is most frequent in older homes, which have solid walls. A new build property with cavity walls offers more protection and is unlikely to suffer from this type of defect, unless there cavities have been blocked.