When framing the roof consider how much overhang you want off the edge of your shed.
Shed roof detail.
If your shed roof is flat or has a pitch of 18 degrees or less consider building a green roof on it.
This involves covering the roof in epdm and then adding a frame that can be filled with soil and planted with a mix of grass and flower seeds.
The underlayment will mostly rot over a period of time and you will be looking at an expense of replacing or repairing your roof.
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Roofs that are 4 12 or less should have ties no higher than the distance from the top plate to the ridge board.
The easiest way to accomplish this is by using smartvent as an off wall shed exhaust ventilating the shed roof without removing the existing flashing and siding off of the shed wall means one less hassle and one less chance of having the expense to replace the wall siding and losing the bid.
Skillion roofs are one of the simplest roof styles used in shed building.
Think of a shed roof as a flat roof at a steeper slope.
Whereas a hip roof and other popular roof types have at least two sides the shed roof has a single slope that can vary in steepness depending on the design.
A skillion roof is made up of a single flat plane which slopes gradually from top to bottom.
The more overhang the further away water will puddle at the base of your shed.
When re roofing your shed roof you should make sure you have the proper ventilation to maximize the life of the roof.