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Sizing Guides

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The most common cause of failure to Lead Sheet is due to the Lead being laid in too large a piece. This is due to the thermal movement of Lead causing fatigue, which will eventually cause cracks. The sizing chart below gives a guide to the maximum recommended sizes for different applications.

Over fixing can also cause premature failure. For further details on recommended sizes for other roofing and cladding applications please refer to: 
Rolled Lead Sheet - The  Complete Manual from the Lead Sheet Association. 

Sizing Guide


Lap Graph


Technical Data Sheets (Printable PDF's)

Sizing Guide

  • Failure of fitted Lead Sheet is usually due to over-sizing. See sizing guide.
  • Lead Sheet should be fitted in accordance with BS 6915 as detailed in Rolled Lead Sheet – The Complete Manual – from the LSA.