A shed roof should slope at least 1 inch per foot but 2 or 3 inches will be better.
Flashing shed roof addition.
While some skylight manufacturers include flashing in their products sometimes roofing professionals have to create it or purchase it separately.
Open valleys have metal flashing to protect this critical area of the roof.
Flashing was added along that wall to keep the water out.
Next the sheet siding for the addition was nailed directly to the studs to quickly enclose the space.
The new roof matched the slope of the shed roof but it tied in slightly lower on the wall to simplify the building process.
If the outside edge is 8 feet high and the area being covered is 15 feet attach the shed roof addition at least 9 feet 3 inches above the level of the porch or other area being roofed or 10 feet 6.
Each flashing job is a little bit different and depends on the type of material that the exterior of your house is made of.
Drip edge metal valley flashing dormer chimney and kickout flashing are types of roof flashing that shed water away from the connections between roofs walls chimneys and other building assemblies.
However the principles are the s.