What is Code Yellow Lead?

Set out within BSEN 12588:2006, Code Yellow [1.50mm] conveniently falls between old imperial Code 3 [1.32mm] and Code 4 [1.80mm] and is used for the same flashing applications. Code Yellow is typically chosen as a cost-effective alternative to using Code 4 without compromising on longevity whilst still achieving industry guarantees and warranties when installed to BS6915 and BS5534.

As with all Colour Codes, there are constraints, which include maximum install lengths of 1.50 metres and the lead element area is not to exceed 0.35 m2. E.g. A traditional 9” flashing; 1.50m x 225mm [9”] = 0.34m2.

Flashing applications include [not exclusively]: abutment, step flashings and soakers, chimney flashings, gutters and back aprons, lead slates, cover flashings and damp-proof course. Code Yellow can be welded.