On flat roofs these felts are laid with a very large blowlamp or torch as this burns off the plastic backing and melts the bitumen simultaneously.
How to repair a flat shed roof.
This cost saving is a big plus for any one with basic diy skills and in a similar situation.
If your shed has a pent roof flat with no ridge you can apply the felt in exactly the same way as you would for one side of a pitched roof.
Spread the felt flat onto the roof and nail along the top edge of the felt.
Also when purchasing a new shed it is worth considering the repair factor 15 years down the line.
Repairing a metal roof seam with turbo poly seal is simple and it is a do it yourself p.
This doesn t stop you using it for a shed roof though because a shed roof is pitched or sloped not flat.