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Figure 33.
Purbeck stone. In some quarries slabs are sawn off the face of masonry blocks to produce roofing with a natural surface. They are then edge-dressed. To look authentic the edge dressing must be done very subtly. It is all too easy to produce edges which are too straight, giving the roof an artificial appearance. Some quarries also saw flat slabs which are surface and edge-dressed. (Terry Hughes). |