How Far Over Edge For Roof Plywood

The answer depends mostly on how far apart the rafters are and the roof loads which vary based on the pitch of your roof.

How far over edge for roof plywood.

Too much overhang and the shingles could blow off in high winds. Roof sheathing panel spacing hints. In my experience with siding this is one of the most common mistakes. Position the first piece of plywood or oriented strand board sheathing on the bottom edge of the rafter tails at one end of the roof.

Yes the plywood should be flush of slightly shy of the outside of the sub fascia board. 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. One of the most important factors when selecting the plywood for your roof is how thick each piece should be. Edge clip requirements depend on the relationship of the panel span rating to the actual distance between roof framing.

Add an inch and a half for subfascia strike a line. Spacer type panel edge clips are available from some manufacturers. Like most other things there is no one right answer for the plywood thickness of your roof. Add the thickness of the true fascia 15 16 in in this case.

Align the long edge of the sheathing with the ends of the. If not whatever you decide to use to cover the sub fascia aluminum cap plowed cedar hardi trim board ect will hit on the plywood under the drip edge. Too little can allow water to seep into rake or fascia boards.