When buildings are constructed there is always likely to be some movement occurring as a result of the following: -

a) Changes in the moisture content of some of the materials used in the construction.

b) Deformation and deflections within the structure as it accommodates the weight of the materials being supported.

c) Changes in temperature.

It is the effects of the movement from the above causes that have to be accommodated so that the installed tiling will not be adversely affected. Movement due to a) and b) frequently continue to occur for some time after completion of the construction. The architect or specifier should select background materials, methods of construction and work schedules that minimise the effect of any movement in the building after the tiles have been fixed.

Is an extremely complex subject and The Tile Association has just published a new technical document to clarify the problem and possible solutions. Its title is "Movement Joints in Internal Tiling" and it covers where cracks are likely to occur, where movement joints should be used and how many and the type of movement joint needed for particular projects. It isn't only large new build projects that require movement joints.

This new publication will be posted out free of charge to all TTA members. Non members can purchase the publication as hard copy or PDF file via the TTA website, http://www.tiles.org.uk/about/publications.shtml, where they will find the full list of TTA technical publications or by contacting The Tile Association on 020 8663 0946

For further information contact a TTA member tile supplier, phone 020 8663 0946 or look on TTA website at http://www.tiles.org.uk/.

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