First cut your rafter boards to size using a circular saw to make sure they fit your roof.
How to fit shed roof felt.
Never install the felt vertically across your roof.
Hang the lower edge of the felt over the eave the part of the roof that meets or overhangs the shed s walls by about 0 5 to 0 75 inches 1 3 to 1 9 cm.
You can then re attach fascia boards to keep your shed looking smart by hiding the folded over roofing felt at each gable end.
As you work the paper can be tacked down in the center so it won t blow away.
Make a birdsmouth notch at the end of each rafter to help it fit into place.
Http www fixmyroof co uk how to felt a shed roof in this video how to felt a shed part 2 we will be looking at how to fit felt to a shed roof and jus.
Use your craft knife to cut a slit in the felt overhang at the apex of the roof then fold the felt down there and nail securely at 10cm intervals along the gable.
Installing felt to a shed roof is an easy diy weekend project.
Start at the bottom of the roofline and work up so any water that gets through the roofing material will shed down the tar paper and will not go under it.
Conclusions on how to install roofing felt.