To measure the roof accurately you should find a fixed surface.
How to cut metal roofing.
Using a circular.
You want a pair of straight cuts or left or right handed pair for cutting both straight and around corners.
First of all measure your roof and order the sheets the exact length you need.
Hand holding marker pen marking measurement on a metal stud.
The best tin snips are good for cutting any edge of corrugated iron that is going to be seen as they are easy to control when cutting.
When you re ready to cut place the sheet onto a flat wide and sturdy work surface.
Lay the roofing sheets on a flat surface with the underside up.
After reclining the surface you need to estimate the cutting line by using a mark and a calibrated tape.
Use snips if you need to make short cuts.
Make sure that they perfectly align with your measurements and remember that being even a tiny bit off can cause irreparable damage to your corrugated sheeting.
Once you are satisfied with your measurements and alignment start cutting the metal.
Because you have to control the panel while cutting the sheet.
Plan ahead prepare the metal and measure before you cut.
If you don t mind working by.
Marking the metal for cutting.
The cheapest way to cut metal roofing is with a pair of tin snips.
Then you put the metal roof on the sturdy surface and switch the underside face of the roof.