You will need to begin at the very bottom of one side of the roof.
How to felt a big shed roof.
Make sure it stays flat.
Then rolling the felt lengthwise move it across the surface of the roof shed.
Once measured and cut line the first piece of felt up so that it over hangs the edge of the roof on three sides by enough to cover the side pieces of the roof.
This short video takes you through an easy step by step guide of how to felt a shed roof.
How to felt a shed roof with wickes enjoy your garden with the wickes garden sheds and buildings range which includes sheds summerhouses greenhouses log c.