Should I Extended Roof Plywood Over Fascia

This would add another 3 4 to the thickness.

Should i extended roof plywood over fascia.

Run fascia the thickness of the plywood higher than the fly rafter on the gable and flush on the sub fascia. Since a standard three tab asphalt shingle roof typically weights between 225 and 300 pounds per square the extra plywood will significantly increase the weight of the roof you install. Chalk your line up the rake 48 from the point where fascia meets sub fascia. Too little can allow water to seep into rake or fascia boards.

Roof edge framing and trim original rafters are extended but original roof deck sheathing cut back to be flush with the original wall sheathing. Now that i ve modeled what i was going to build i decided i need a piece of molding to break up the plain look of just the fascia trim plank. I install the fascia flush with the top of the sub fascia. Roofs are framed with rafters or trusses which are rafters joined by internal braces so they install as a single component.

This allows the. Add an inch and a half for subfascia strike a line. The edge of the shingles should hang over a roof between an inch and an inch and a half or between a half inch and three quarters of an inch if drip edge flashing is installed. Rafters run from the peak of the roof.

Since i intended to phase the work do the over roof first and then the walls later maybe a lot later the rafter extension approach was the one i went with. The minimum plywood for roofing. Installing the fascia before sheeting the roof solves a lot of problems. Measure from the edge of the plywood outside of the wall over to whatever the overhang will be and square a line up to indicate the end of the truss tail.

Too much overhang and the shingles could blow off in high winds. I ve trimmed my roof sheathing to run between 5 8 and 3 4 over the sub fascia.