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What Do the Codes Mean on Lead Flashing?

Elena Rostova • • 4 min read
What Do the Codes Mean on Lead Flashing?
Lead codes determine the weight (and hence the thickness) of lead sheet. The number in the code simply equates to the weight in lbs, per square foot of lead. When installed correctly, the lead will often outlast the life of the building.

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Accordingly, what is lead flashing code?

Lead Code Thickness Weight (kg/m2)
Code 3 1.32mm 14.97
Code 4 1.80mm 20.41
Code 5 2.24mm 25.40
Code 6 2.65mm 30.10

One may also ask, what is Code 5 lead flashing used for? Code 5 lead flashing rolls can be used for anything from tapered valley gutters and flat roofing through to pitched roofs, canopies and vertical cladding.

Moreover, what is the difference between Code 3 and 4 lead flashing?

While Code 3 is suitable for soakers, Code 4 is the minimum thickness to use for all flashings. An alternative method for more exposed situations is a single-step flashing which can be used over soakers, cover flashings or secret gutters. 15 All dimensions are in mm, except where otherwise stated.

What is the minimum upstand for lead flashing?

The vertical lead upstand needed on a pitched roof is less critical than on a flat roof, although the recommended minimum is 75mm, 50mm will be fine on a porch.

Related Question Answers

What is Code 3 lead flashing?

Code 3 lead is the thinnest gauge of lead used in commercial roofing and is suitable for light applications such as soakers at the abutment.. As it is a thin gauge, Code 3 lead is easy to work with and, as with all lead flashing, the low melting point of lead means that you don't use as much fuel to melt the material.

How long should lead flashing last?

100 years
Elena Rostova
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Elena Rostova

Elena Rostova holds a Master's degree in Public Health Journalism. She covers groundbreaking medical research, holistic wellness trends, mental health awareness, and nutritional science.