Roof Sheathing Over Fascia Board

Chalk your line up the rake 48 from the point where fascia meets sub fascia.

Roof sheathing over fascia board.

Starting with how to place the first row of sheathing we cover fastening methods the use of h clips stagg. We go in depth on how to install roof sheathing. Where should roof drip edge flashing be placed. This would add another 3 4 to the thickness.

But if you snap it at 40 inches then the sheathing will not project over the subfascia or true fascia. 4 reduced roof tile overhang by capping over the boards the guttering will be set slightly further away from the roof tiles this may cause rain water to run behind the gutter rather than into it. This is to just enough to cover the 3 4 x6 actual fascia. Installing the fascia before sheeting the roof solves a lot of problems.

This opens the door to the possibility of water damage by letting gravity work. Run fascia the thickness of the plywood higher than the fly rafter on the gable and flush on the sub fascia. Installed a new fully adhered membrane to the top of the old board sheathing prior to adding all that rigid insulation. Roof edge detail overhang extended to hide the thickness of the over roofing rigid insulation.

I install the fascia flush with the top of the sub fascia. Draw a full scale mockup and snap a line with fascia in kind when sheathing a roof the first step is to snap a line so that the first row goes on straight. This is a known issue that is directly caused by capping over the fascia instead of doing a proper job and replacing it. I ve trimmed my roof sheathing to run between 5 8 and 3 4 over the sub fascia.

Gable end detail overhang cut and then rebuilt to hide the thickness of the over roofing rigid insulation.