Add about 2 inches 5 cm to each of your measurements before calculating the area.
How to lay a roof on a shed.
Fasten the truss by driving 8d finishing nails at an angle down through the board just above the birdsmouth notch and into the underlying wall plate.
This video will show you how to install roof shingles.
Calculate the area of your roof by combining the area of each surface.
Shed build time lapse.
Cutting your felt pieces.
Start by measuring the length and width of one side of the roof in.
Lay the starter row of metal shingles at the drip edge and affix to the roof with metal roofing nails.
Most metal shingles will be attached to the roof using metal shingle.
I do this on my shed but these basic principals can be applied to your house as well.
Attach the end rafters to the wall plates of your shed frame.
This will give you extra felt to hang over.
Work up from the initial row starting at the lower corner in a diagonal pattern staggering the shingles to prevent gaps.
In this video i show you the basics of roofing.