How far should rafters overhang the roof?
Keeping this in consideration, how far should rafters overhang? 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 supports.
How far should roof sheathing overhang fascia?
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. Click to see full answer. Keeping this in view, how far should rafters overhang? Two feet is the general maximum length for a typical roof overhang.
How do you measure roof sheathing overhang?
It is at 45-3/4 in. 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.
What is roof sheathing upper edge overhang?
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. Click to see full answer. Keeping this in view, how far should rafters overhang?
How far does sheathing overhang 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 much should a rafter 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. What is this?
Should roof sheathing have gaps?
0:132:29PROPER SPACING FOR ROOF DECKING - YouTubeYouTubeStart of suggested clipEnd of suggested clipAnd we'll lay the lay the decking the OSB. And as you can see there budded right now we don't wantMoreAnd we'll lay the lay the decking the OSB. And as you can see there budded right now we don't want this we want a gap of at least an eighth of an inch for expansion purposes.
How do you lay plywood sheathing on a roof?
0:292:55Roof Sheathing Installation Tips from Georgia-Pacific - YouTubeYouTubeStart of suggested clipEnd of suggested clipFirst ensure that the roof framing rafters. And upper truss cords are all in alignment. Use blockingMoreFirst ensure that the roof framing rafters. And upper truss cords are all in alignment. Use blocking to fix any areas of twisted framing and to provide a level surface for the panels.
Does a roof need an overhang?
Importance of a Roof Overhang These structures have an important function which encompasses the protection of doors, windows, siding, and walls from the rain and heat. Without the right overhang protection, sides of a home could rot from rain exposure, or your house could easily feel overheated over the summer.
How is overhang length calculated?
In most climate conditions the following formula can be used to determine the appropriate amount of overhang: X=1/2Y (where X is the length of the overhang required and Y is the distance from the bottom of the door to the base of the overhang.)
Is it better to nail or screw roof sheathing?
Nails are often preferred for structural joining, including framing walls, because they are more flexible under pressure, whereas screws can snap. Nails are also called upon when securing plywood sheathing for exterior walls, installing hardwood floors, and attaching siding and roofing.
Is 7/16 OSB OK for roofing?
OSB is the most-used sheathing material for new roofs and roof replacements. You can use 7/16-inch thick OSB sheets without support for areas where the snow load is 30 pounds per square foot because it's durable and maintains building integrity much longer than other sizes.
Does OSB need expansion joints?
Yes, in order to avoid dilation stress on the board edges. Expansion gaps are narrow distances that must be provided at the panel joints when fixing the straight-edge OSB boards on supports.
Does roof sheathing need to be staggered?
Staggering panels by at least two supports is recommended. During the installation of OSB, the rough surface side should be facing up. This rough side is a screened or skid-resistant coated side. The panels should be spaced 1/8-inch apart at the ends and edges.
Is OSB OK for roof sheathing?
Both OSB and plywood panels can cut and installed on a roof using conventional roofing equipment. They have similar structural characteristics, and can be used interchangeably.
Do roofing nails go through the sheathing?
It is crucial that roofing nails of the correct length were used to secure the shingles. The sharp tip of the roofing nail should pass through and extend approximately 3/8-inch past the underside of the roof sheathing.
Where should the sheathing be on a roof?
Ideally the sheathing should be on top of the fascia without extending beyond it.
What is the vertical part of a rafter?
The Fascia is the Vertical part of the rafter (vertical plane) that you can see while facing in elevation (facing the building with feet on ground.) Once in a while the Fascia is not “plumb” (straight up and down.) When that is true, the gutter is supported by a gutter wedge so it can rest at a 90 degree angle.
How do I install fascia on a roof?
The way we always do it is to install the fascia first. Hold a speed square or something similar on top of the rafter/truss tail. Pull the fascia up or down until the corner of the speed square hits somewhere near the center of the top edge of the fascia, and nail the fascia in place . Now the bottom edge of the roof sheathing will rest on top ...
What lumber should I use for a roof?
This rule of thumb is based on using Doug fir lumber, and is only a rule of thumb. If you are planning on building a roof, it would be a good idea to have an engineer or architect design it for you, as they will be able to get all the pertinent information and help you build.
How many feet can a 2x4 span?
That may sound confusing, so as an example, the maximum span for a 2x4 should be 6 feet, since 4 times one and a half equals 6.
Can a 2x6 rafter span a double garage?
Continue Reading. Your question isn't actually coherent as worded. 2x6 isn't the ‘ span’ of the rafter, it is the timber call size.