Roof Sheathing Fascia Detail

But if you snap it at 40 inches then the sheathing will not project over the subfascia or true fascia.

Roof sheathing fascia detail.

Include roof pitch roof geometry slope length and climatic factors such as heavy snowfall or rainfall. All valleys regardless of type should be lined with a minimum 36 inch wide peel and stick membrane. That said many older houses or those with exposed rafter tails don t have a rough fascia. Refer to the details.

The peel and stick needs to be installed directly to the roof sheathing before a roofing underlayment is installed. Before the roof sheathing goes on the open framing provides easy access for attaching the return blocking and the nailers for the rake soffit. It supports the roof sheathing at the eaves and provides backing for the gutters. Cad details document name pdf dwg download all cad construction details 37 1 mb 3 4 mb mc01 identification of roof areas 694 kb 167 kb mc01a single layer underlayment 678 kb 302 kb mc01b double layer underlayment 711 kb 322 kb mc02 vent pipe flashing 626 kb 349 kb mc03 valley.

The sub fascia is usually a 2x6 that is ripped so that the blocking framing for the soffit 6 can fit underneath and tie into the notch in the fascia. The sub fascia or rough fascia is part of the framing. Then the thinner fascia is attached to the sub fascia. This opens the door to the possibility of water damage by letting gravity work against you.

Much of this aesthetic is made moot by a gutter which hides much of the fascia detail including that wide 1. The drip edge will be installed 1 8 proud of away or out from the furring strip in best practice or may be installed tight against the furring strip reduces the life of the furring strip by rot. Whenever possible begin trim installation at the downwind end of the roof farthest away from the source of prevailing winds to al low flashing laps to face away from wind driven rain. This membrane should be run with the width of the material centered along the length of the valley.

When sheathing a roof the first step is to snap a line so that the first row goes on straight. Nail thefurring strip to the fascia board near the fascia top tight under any extending of roof decking usually absent. The last pieces to go in were nailing blocks above the ledger for the back of the return and at the bottom edge of the soffit for attaching the rake 20.