A standard minimum for a sheet of metal placed on the roof so that it overhangs the edge is at least of an inch to 1 inch 2 2 5cm.
Metal sheet roof structure.
While sometimes caused by inferior metal or too low gauge thickness too often it is caused by under or over tightening of roof fasteners that causes the metal to stretch.
Oil canning in metal roofing is an observed waviness or buckling across the flat areas of sheet metal panels that does not normally affect the roof s structural integrity.
In fact if you re building a house or an addition you can often downsize or reduce the number of roof support members.
Because of the material s light weight you can save on engineering and building the supporting structure.
Item 77000 model 1418c.
Tuftex polycarb 2 17 ft x 12 ft corrugated clear polycarbonate plastic roof panel.
On the other hand a maximum is around 8 11 inches 20 30cm.
A lightweight roof is very useful for large and or old structures as it helps to maintain the overall structural integrity of the building.