Zinc Roofing Metal roof works are usually carried out with 2 men gangs of skilled labour. The rates do not include for the timber backing structures etc. Flat Roof Zinc Work = 2.3 m2/day Sloping Roof Zinc Work = 1.9 m2/day Book traversal links for Zinc Roofing ‹ Titanium Roofing Up Rainwater Works › Log in or register to post comments