Should Roof Sheathing Overhang Fascia

If not whatever you decide to use to cover the sub fascia aluminum cap plowed cedar hardi trim board.

Should roof sheathing overhang fascia.

I ve trimmed my roof sheathing to run between 5 8 and 3 4 over the sub fascia. The fascia is the wide board that s installed on edge and runs horizontally along the edge of the roof. This indicates the upper edge of the first row of roof sheathing leaving enough overhang that the subfascia and fascia will tuck neatly underneath when the time comes. The roof sheathing comes down and ends on top of the 1 x fascia.

Our illustration above shows proper placement of the roof drip edge atop the roof sheathing before installation of roofing felt or ice and water shield and spaced a bit away from the fascia board to improve its drainage. Then i do a metal drip edge to cover it all. The drip edge should be installed over a piece of 1 2 furring strip so that it stands off from the fascia or rafter tails. Make sure it is square level etc.

This is to just enough to cover the 3 4 x6 actual fascia. A shed roof overhang is something most homeowners don t think about until their standing in the rain trying to get the door unlocked or fretting about all the water that s suddenly pooling around the shed s foundation. Measure up the rafter 45 3 4 inch from the cut end of the truss tail and snap a line along the trusses. If the drip edge is laid right up against the fascia or rafters then because of surface tension the water runs right up against the fascia and underneath the soffit.

Put that up first. Now that i ve modeled what i was. Fascia and soffits finish the edges of roofs by covering the ends of the roof rafters or roof trusses where they overhang the sides of the house. Don t overhang the sheathing at all.

Yes the plywood should be flush of slightly shy of the outside of the sub fascia board. Use your speed square on the fascia board and run the sheathing down to that.