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How far should roof sheathing overhang rafter tails?
45-3/4 inch
Measure up the rafter 45-3/4 inch from the cut end of the truss tail and snap a line along the trusses. 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.
Should there be a gap between roof sheathing and fascia?
The best installation method is to leave a gap between the drip edge and the fascia board, about the width of a finger. The shingles should also overhang the drip edge 3⁄8 to 1/2 an inch.
How far should rafters overhang?
Overhangs can vary from a few inches to a few feet depending on preference; however, the suggested width of an overhang is between 12” and 18” for eaves and no more than 8” for rakes. That said, overhangs can extend as far as 2′ without the need for external supports.
How do you measure a rafter tail?
Place a stepladder at the end of a wall where the rafter tails will be cut. If scaffold is in place, work from the scaffold. Measure straight out from the face of the wall and mark the side of the first rafter tail at the desired overhang. Typically, overhangs are 12, 18 or 24 inches.
What is a builder’s gap?
What is Builder’s Gap? This is a gap between the fascia board (where the gutter is hung) and roof decking. This gap is caused when roof decking is stopped too short and is not flush with the fascia. The gap is meant to help with airflow throughout the attic.
How far can roof overhang without support?
Two feet is the general maximum length for a typical roof overhang. This will protect a roof from most types of damage. Roof overhangs can extend farther than 2 feet, but beyond this length, they begin to lose structural integrity and require external support.
How much should a gable roof overhang?
Gable end overhangs that are ladder framed should not extend more than 8 inches from the house and should be nailed every 4 inches on center.
Should sheathing be staggered?
Most installations are Category 1, but the critical criteria in all categories is that the panels MUST fully meet (lap) the sill plate, both top plates and 1/2 of stud at ends. (Please stagger nailing into studs where the panels end, to avoid splitting of stud.)
What are the steps to roof sheathing installation?
5 Steps to Proper Roof Sheathing Installation Step 1: Always Check for a Level Nailing Surface. This can be done with a straight piece of lumber (6 feet to 10 feet… Step 2: Provide Roof Ventilation According to Building Codes. A minimum net free ventilation area of 960 square inches… Step 3:
What kind of roofing do you use for rafters?
Decking. The decking of a roof is typically a plywood layer that is fastened directly onto the rafters. The plywood covers the entire roof and is solidly attached to the rafters, providing a sturdy base for both insulation and metal roofing panels. While decking is not required for a metal roof and is often not used for shops,…
How big of a piece of lumber do you need for roof sheathing?
This can be done with a straight piece of lumber (6 feet to 10 feet long) or a long carpenter’s level. Trusses or rafters should be shimmed as necessary to provide a level nailing surface. If the top chords of trusses or rafters are warped or bowed, install blocking to straighten.
What should the spacing be between trusses and rafters?
Another factor is how far apart your trusses or rafters are spaced. 24” and 16” are the most common spacing, and you’ll often find 16” standard for rafters and 24” standard for trusses. A thicker panel may be required for 24” compared to 16”, so if you have larger gaps between the framing, consider a thicker substrate.