The ridges are thatched differently to the main “coat” of a roof to make a watertight crown. A good ridge also protects the main coat and prolongs its life. A thatched roof needs a new ridge every 10 years or so. There are two types of ridge:
Block cut ridge
Block cut ridges have several layers, and last the longest. The bottom layer, called the skirt, can be cut into an intricate pattern to create an ornamental ridge. You can choose your own pattern, or Tim can suggest a pattern to suit the contours of the house.
Flush ridge
A flush ridge is laid flat against the roof. It enables a constant water flow over the coat, which prolongs its life. This type of ridge is traditionally done on long-straw roofs. The pattern work of the spars in the ridge is not just ornamental, it is essential to tighten and smooth the straw. This technique can be applied to older thatches to prolong the life of the coat at least cost.
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TALK TO TIM
Do you want advice about your ridge? Call or email Hampshire's friendly Master Thatcher!