Use a straightedge to help you transfer the angle you marked on the siding.
How cut roof house.
Make sure the underlayment lies smooth before you nail the top edge.
The underside is flatter than the top edge making it easier to cut across.
Stick on the underlayment.
Use a tape measure to measure the entire width of your building.
Because you have to control the panel while cutting the sheet.
Before you start cutting you first need to determine how long your roof rafters need to be and the angles at which you ll cut the top and bottom of the rafter.
Measure the bottom piece of siding to the proper length which is the length of the wall to the roof line minus 2 inches.
Sheet metal shears with parallel or angled guillotine knives and a circular saw are often used for cutting of sheet metal onto strips or workpieces.
Lay the roofing sheets on a flat surface with the underside up.
Project step by step 15 roll out the self stick underlayment.
Protect the roof against ice dams and windblown rain with self stick ice and water.
Find a stable surface like a workbench you can use to cut the sheets without moving them.
To measure the roof accurately you should find a fixed surface.
If there is an issue how to cut corrugated metal roofing the most reliable option would be using electric scissors.
Then you put the metal roof on the sturdy surface and switch the underside face of the roof.
Peel off the bottom backing.
After reclining the surface you need to estimate the cutting line by using a mark and a calibrated tape.
