Step 1 – Carry wall underlay up the wall framing and turn out over the underside of the flying rafters/soffit framing. Using a double fix to every rafter ensures a secure fitting that will last for years. from the fascia to avoid waves and ripples in the soffit plywood. A pair of rafters is called a couple. All roof rafters should be identical, so follow the same steps to measure the plumb cut, tail cut, and birdsmouth cut. 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. Let moist areas dry out before proceeding. For more information on ventilation and moisture control, read this article I wrote on Proper Attic Ventilation. The fascias form the outer edge and have a groove in them to receive the soffit lining sheets. Roof leaks will not always be apparent on the ceiling directly below the leaky spots. Use a reciprocating saw to chop out the rotted rafter. A ledger plate is fastened to the wall to attach the soffit at that location. The calculated Soffit Drop is the measurement from top of wall vertically down to the underside of soffit sheeting. How to Fix the Soffit and Fascia on a House. The drawings in this article illustrate the various types of eave and soffit construction. Then I simply multiplied the length of the base (72 5/8, or 72.625, inches) by 1.118, which equaled 81.195 (or 81 3/16) inches, or the length of the bottom gable plate, long-point to long-point. 5. Climb a ladder near the corner of your roof and tape the end of your tape measure against the rafter using duct tape. Under the “6” on the square is the number 13.42, or the length of a rafter per foot of run. horizontal mark is 80mm above soffit line). Dry rot on the ends of gable rafters must be addressed before it spreads to the roof sheathing or rafters in the attic. In this example the soffit is fixed to the slope of the rafters. Determine How Much Soffit You Will Need . Remove Old Soffit. You are basically trying to mimic the rafter feet either side of the affected timber. There could be many rafters supporting a roof. Sometimes the projecting portions of the rafters — the rafter tails — are cut plumb and level to be boxed in with a soffit and fascia or more ornamental trim. It usually ranges from 305mm to 315mm for 22.5 degree roof pitches. 4. (Many builders have the soffit sit on top of the window frame.) 3. The joists are spaced approximately 2 feet apart along the length of the roof. Although the underside of any element of a building can be called a soffit, typically we reserve the term for the area under the eaves of a roof. Attach Cleat. These architectural elements serve to protect your home from a variety of pests. soffit. Cut a replacement piece from pressure-treated lumber. Water from leaks can run down the rafters and cause the soffit to remain damp. In home construction, rafters are normally made of wood. Make sure that the fascia isn’t too wide as this can block windows from opening and secured in place to support the weight of roof tiles and guttering. Probe the rotted areas with a screwdriver to find the extent of the damage. Soffit lining a house in Northern Florida, United States. The rafter tails support the edge of the roof, and the lookouts support the soffit boards, so they have to be sound. Pull down to remove the old soffit. Then complete the installation as described for open eaves. ft. of vent area with half under the eaves in the soffit and half near the peak as either gable or ridge vents. To create a straight, rigid soffit, try to maximize plywood along it’s length and minimize joists. Replacing the rotten area only is too short for a firm hold. 2. Soffit vents alone are not enough to provide proper attic ventilation. Check for signs of a leaky roof, which may run down the rafters and cause the soffit to remain damp. If you widen existing holes, widen them toward the fascia, but no closer than 3 in. If you use only one screw you create a ‘see-saw’ effect where the wood moves under pressure. A soffit is the exposed under surface at any overhead component of a building such an arch, balcony, cornice, beam, cornice, lintel or vault. If you’re installing perforated soffit panels and the existing soffit doesn’t have openings for ventilation, cut an adequate number of openings. Roof leaks will not always be apparent on the ceiling directly below the leaky spots. When you’re finished, you can install gutters on the boards. It is commonly made in aluminum and vinyl, as well as fiber cement, wood, and steel. The sequence of construction is described in Steps 1–7 and shown in Figures 1 and 2. Your horizontal mark will be Dimension x minus 80mm to the Suggested Reference of the slot on the rafter bracket (i.e. Wide eaves require additional nailing supports running from the rafter-ends/fascia board and back to the house wall. Note that a squirrel had built a large nest above the soffit shown here. The intersection of the soffit lining and the top of the weatherboards can be effectively flashed and wedges installed to block the gaps between the weatherboards. Some of the animals that can invade your home if the soffit is in disrepair or nonexistent include squirrels, birds, and bats. Your home’s attic also needs ventilation. The Top Fascia to Under Soffit measurement is from top of fascia (under roof sheeting) to the bottom side of the soffit sheeting. Remember to allow for the fascia ventilation in the total height if you’re using it. Splicing alongside rafter feet is generally done on a fascia soffit gutter run. The soffit is the material that covers the eaves, or the place where the rafters extend beyond the walls of the house. This permits the exterior insulation to extend above the top plate line so that we avoid a cold spot along the top plate. 2. Rafter: Rafter is a sloping beam (usually wood) that supports a pitched roof. They sit, at right angles, to the fascias, helping to create a water-tight seal that protects your roof interior and rafters. The procedure used to install soffit … Soffits provide coverage and protection, shielding the eaves and rafters from weather damage. The number of rafters needed will be determined by the length of your roof. Place the fascia board level with the front of the soffit board. installing vinyl soffit. In layman's term fascia boards are the horizontal boards that are attached at the end of rafters at the exterior of a building which are used to hang rain gutters or guttering. Essentially there to protect the underside of the roof edge, they can be seen on the overhang of your roof (stand under it and look up). Use a tape measure to find the length of your roof. Look through exposed rafter soffit pictures in different colors and styles and when you find some exposed rafter soffit that inspires you, save it to an Ideabook or contact the Pro who made them happen to see what kind of design ideas they have for your home. Two problems occur on aging eaves: The fascia warps slightly, and that leads to plywood under the soffit sagging or separating. Fix it onto the rafters with stainless steel nails – rafters should have two evenly spaced nails on to hold the fascia in place. When installing the soffit: 1. Straight, Level and Square: You should be concerned about leveling the soffit and this is the time to think about it. Remove Rotted Rafter. Position the soffit venting holes between the rafters at equal intervals. Aluminum and vinyl are the predominant materials, and they are available in solid, fully perforated or lanced, or combination soffits. These architectural elements found along the eave area do more than just add visual interest and give a finished look to your home. Rafters are commonly spaced about 24 inches (61 cm) apart. I divided 13.42 by 12 inches to come up with 1.118 when the length of the base is 1. Even without soffit venting, it is important to provide an air gap at the soffit level to help keep the roof deck dry. When a roof is placed on a building, it is supported by joists. I am ready to start on the next phase of retrofitting the envelope.nIn this phase I have to decide how (or even whether) to get insulation in the 5 and a half inch bays above the ceiling, between the rafters/joists in this miniature, non-accessible “attic”. The point at which the joist meets the exterior walls of the building leaves a gap that is open to the outside environment. That way you can completely finish all the cutting down on the bench before taking them up and installing them. You can find the rafters by locating the nailheads or using a stud finder. Typically consisting of wood, wood substitute (such as Fibre Cement or Nutec), metal or PVC plastic, the fascia board along with the soffit, encloses the roof space of the home. These are called lookouts. That means you should have at least 2.6 sq. Find the location of the rafter tails behind the fascia board. In this example the soffit is 12 inches wide and made from center lanced U groove perforated sections of vinyl in a return fashion and fixed to a truss roofing system. At other times, the rafter tails are left exposed. Install a solid wood sub-fascia on the ends of the rafter tails or install blocking between the rafter tails as needed. Steps. It’s most commonly used around a building’s main roof, but soffit can also be used under porches, under arches or columns, under a flight of stairs… pretty much anything that has a visible ceiling.

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