how to trim a roof overhang

A 2×10 subfascia was screwed over the tail blocks to serve as a base for the fascia and to pick up the front edge of the soffit board. wikiHow's Content Management Team carefully monitors the work from our editorial staff to ensure that each article is backed by trusted research and meets our high quality standards. Once cut, check to make sure the two lengths of … Measure as precisely as possible, down to the 1⁄4 inch (0.64 cm), 1⁄8 inch (0.32 cm) , or 1⁄16 inch (0.16 cm) . By using our site, you agree to our. Overhang is the portion of the rafter that will extend past the edge of the building’s wall. the roof above the overhang. But I’m not concerned about the joints. When you cut the rafters, you’ll need to make 3 separate cuts: the ridge cut (also called the plumb cut) at the top of the rafter, the birdsmouth cut (which itself comprises 2 different cuts) where the rafter meets the building’s wall, and the tail cut, at the base of the rafter. comprehensible and practical one that I have come across. The length of the overhang depends primarily on the climate. Set up scaffolding. But with the arrival of COVID-19, the stakes are higher than ever. Get complete site access to expert advice, how-to videos, Code Check, and more, plus the print magazine. Mike, good idea but a narrated video showing the step-by-step construction of this somewhat complex procedure would be appreciated. Do the same for the other side. Become a member and get instant access to thousands of videos, how-tos, tool reviews, and design features. Use a pencil to jot the width down somewhere. For the horizontal cut, I set my combination square to 3 1/2 inches (the width of the barge rafter) and … C-clamps would work well for this. To cut roof rafters, start by fixing the stair gauges on your framing square to the dimensions of your pitch. The siding underneath the overhang is known as the soffit. The first thing I'm going to do is mark the eave trim for my left corner. Make sure the other stair gauge is resting against the rafter and use your pencil to trace the length of the tongue. With the rafter extensions installed, you can turn to trimming, sheathing and roofing. Fine Homebuilding's Coverage of IBSx 2021, SawStop's Portable Tablesaw is Bigger and Better Than Before, Exterior PVC Trim: Wire and Pipe Penetrations, Exterior PVC Trim: Corners, Inside and Out, Plus, get an extra 20% off with code GIFT20, 2020 Readers' Choice: Contemporary Farmhouse, Simple Way to Make Old Walls Straight and Plumb, Expert insights on techniques and principles. Use your pencil to trace the full length of the tongue along the width of the rafter. The cutting of the Z trim is straight forward. For added stability when making the birdsmouth and tail cuts, use C-clamps to clamp the rafter to a workbench or sawhorses. This is also the time you may discover that you have had water damage and the job just got bigger. Please consider supporting our work with a contribution to wikiHow. The example rise will be 17.81 inches (45.2 cm). I can confidently say that I expect to be a life-long subscriber." Make a pencil mark on the rafter's bottom edge 1 1/2 inches shorter than you want the overhang. Top center piece of trim. You can purchase both stair gauges and a framing square at your local hardware store. You can see my pencil marks where I've had it up on the roof, and I've made the measures to fit in between the panel and the gable trim. The number of rafters needed will be determined by the length of your roof. If you’re using a handsaw, grasp the handle firmly in your dominant hand. Cut soffit panels to fit the dimensions with either heavy-duty snips or a circular saw equipped with a … We've been helping billions of people around the world continue to learn, adapt, grow, and thrive for over a decade. This article was co-authored by our trained team of editors and researchers who validated it for accuracy and comprehensiveness. I imagine you have to be careful to ensure that the slope is dead on with the roof slope. At the roof, they cantilevered the 1x10 roof sheathing over the gable by about a foot. Instead of letting the rafter tails project beyond the exterior wall and trimming them with a fascia and soffit cuts, we’re screwing blocking and a subfascia onto the wall. Cut the overhang tail extensions out of new lumber and make them long enough to extend back to the house or into the house for a good secure attachment to the old rafters. Place a full sheet of 5/8-inch redwood or fir siding flat on sawhorses. Instead of letting the rafter tails project beyond the exterior wall and trimming them with a fascia and soffit cuts, we’re screwing blocking and a subfascia onto the wall. Now all that’s left is to cut the rafter accordingly. 16-18 inch overhangs are a good ideas on all sides of the house for protecting the homes exterior walls from rain. The ideal shed roof overhang depends on the purpose of the overhang, the location and microclimate of the building. Next, set the framing square on top of the rafter beam and use a pencil to trace the outside edge of the framing square’s tongue. Measure the vertical distance (rise) from the 12-inch mark on the level (run) to the underside of the same rafter. It took me about 20 minutes per coat—much faster than I could work off of staging. If you’re using a roofing calculator, press the “Run” button to input the run measurement in the calculator’s memory. References. Rather than jacking against the wall plate, we installed strongback blocks to the eave ledger and lifted against them. Write the run measurement down alongside the other measurements. It is cut, angled and folded onto the roof line, and fasteners (usually evenly spaced between 12 and 24 inches apart) set it in place. The goal is to balance the amount of solar heat gain and amount of shading. When tongue-and-groove boards are used, joints may be … Follow the steps below to successfully extend your roof’s overhang. Since you’ve attached stair gauges to the framing square, the line you’ve drawn will be at the correct angle for the rafter to lay flat against the ridge beam. Each side of the trim meets at the top peak of the roof. I'm going to mark the Z trim, cut it and install it so that we can install the end wall trim using stitch screws. Its in the shape of a roof peak, a front face and it wraps underneath the newly installed trim. To cut it, I just snip through and it bends. Use a tape measure to measure the entire width of your building. I sorted out the roof sheathing plane and mounted a 2×8 ledger board over the 2×3 blocks—but not before installing 2×8 tail blocks to the ledger with screws from the backside. Then, trace the short side of the framing square with a pencil to mark the tail cut. They didn't install a fascia or any kind of support for this overhang. A typical metal roof overhang may be 2 to 4 inches, or even less. And given that they’re 28 ft. above grade, it’s unlikely anyone will be able to notice the joints without binoculars. Aug 2, 2016 - Explore Rachel Thayer's board "Roof overhang", followed by 128 people on Pinterest. If the trimming object is a wall or a slab, the trim plane is at the closest surface. They keep you roof’s lower line together and prevent sagging and separation. Jot down this number alongside the others you’ve already written. Step Eleven: Fold the drip edge to fit over the ridge. I really like this approach. There’s a tremendous amount of weight being transferred from your roof shingles to your gutters during a rainstorm. Begin by measuring from your extended fascia to the peak of the shed. Nailing Nail lumber roof sheathing to each rafter with two 8-penny (8d) nails. For more tips, including how to calculate your rafter length, read on! The final measurement is referred to as the “run” of a building. Cut the flashing into 3–4 ft (0.91–1.22 m) sheets using tin snips. Slope is calculated as rise over run. Always take safety precautions when working with any type of saw. Exterior trim details tie your home’s form and function together.Your roof and siding work as a system.

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