Replacing felt on a flat roof. 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. start at the lowest edge and nail your felt along the facia. spread the felt flat onto the roof and nail along the top edge of the felt.. Epdm membrane, replacing a shed roof, shed roof adhesive, shed roof kit, shed roof repair, shed roof replacement when it comes to replacing a shed roof, there is an easy option for the diy-er, which will avoid costly professional help or buying a new shed!. �
