Zinc
Minimum pitch
5 deg
Typical pitch
15 deg
Install rate
132
Service life
80 yr
Weight
12 kg
Goes down to five degrees, which is why it turns up over extensions where nothing else works. Almost all of the price is labour, so a complexity uplift bites harder here than anywhere else on this list.
Every rate on this page is an install rate before tear off, complexity, scaffolding, waste and contingency. Put it through the estimator to see what a whole job in this material costs.
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