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.
Metal sheet roof structure.
Tuftex polycarb 2 17 ft x 12 ft corrugated clear polycarbonate plastic roof panel.
Because of the material s light weight you can save on engineering and building the supporting structure.
A lightweight roof is very useful for large and or old structures as it helps to maintain the overall structural integrity of the building.
On the other hand a maximum is around 8 11 inches 20 30cm.
Item 77000 model 1418c.
In fact if you re building a house or an addition you can often downsize or reduce the number of roof support members.
Metal roofing is also lightweight creates little stress on the load bearing roof support structures and can be installed on top of an existing roof.
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.