Acetal Clips for Roof Tiles

Acetal Clips for Roof Tiles W.H. Boddington Limited 

The figure illustrates the clip currently produced, which is the Mark 9 version. An earlier design of clip was the Mark 8, which was derived from the design of a galvanized-steel clip produced and used in West Germany. Galvanized clips may not be used in the U.K., and the acetal copy was produced for this purpose. It was much cheaper than the alternative stainless-steel clip which was in use before the acetal clip was produced. The Mark 8 clip is now being replaced by the Mark 9 version. 

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This study is concerned with clips used with cast concrete roof tiles. They are moulded from acetal copolymer by W.H. Boddington and Co. Ltd, Horsmorden, Kent, for Redland Tiles Ltd. The function of the clips is to hold the tail of one tile and the head of the tile in the course below to the wooden batten. Its shape and design can be seen in Figure 5.1. The tiles have grooves into which the sidelock hook of the clip is fitted. The square section then locates on the lower tile, and the curved spring section passes under the roof batten to clip on with the lower hook. 

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