Installation of vinyl depends on the type of construction, open or closed eave, and whether the fascia cap is to be applied. Rotted or deteriorated wooden soffits should be removed before installation of new vinyl soffits. Closed eave, where an existing soffit is in place, is typical of remodeling projects. Open eave construction, where the rafters or trusses are exposed, is common on new construction. The installation also depends on whether the eave construction is open or closed. It’s available in a wide range of colors and requires little maintenance. Vinyl is one of the most popular soffit materials. INSTALLING RAFTER VENTS DIAGRAM CODEFor instance, CertainTeed Ironmax soffits may span 24 inches without additional nailing strips, if permitted by code rules. Soffits usually range from 16 to 24 inches wide. One factor is the maximum permissible span of the soffit material. This may also depend on the windloads in some areas. You should also check local building codes for the amount of ventilation required in your area, as well as the required or suggested application methods. The type of soffit installation depends on the type of material and the eave construction. Ventilated soffit materials can help prevent winter ice dams and keep the home cooler in the summer months. Soffit materials may be vinyl, metal or wood. Metal or vinyl soffits also come as solid panels or perforated to provide ventilation. Soffit installation or replacement is easy with these materials, even for a first-timer. These soffits come in preformed lengths that are cut to fit into matching, preformed receiving channels to hold the soffits in place (in the same manner as metal or vinyl siding installation). These materials offer the advantage of no painting or finishing and little maintenance. Both metal and vinyl are available in a variety of colors to match metal and vinyl house siding. One of the most popular soffit materials, however, is vinyl. Metal ventilating screens are available for wood soffits. If redoing an older home and you desire to stay with tradition, this may be the choice. Wood and wood products, such as tempered hardboard, were an early choice. Soffit installation is fairly easy, even for a first-timer.Ī variety of materials are used for soffits. Ventilation not only prevents ice dams, but helps reduce heat build-up in the summer. Venting both the attic with eave vents and the soffit with vent systems increases air circulation and prevents this problem. This creates an ice dam that allows water to work its way back into the walls and ceilings of the house. As the attic warms from the house heat, it allows the roof surface to melt snow, or ice, which then runs down into the colder eave surfaces and freezes back again. If soffits are not ventilated, they can cause the formation of ice dams at the eaves. One of the most important factors is proper ventilation. Soffits must be designed and installed properly. The drawings in this article illustrate the various types of eave and soffit construction. Wide eaves require additional nailing supports running from the rafter-ends/fascia board and back to the house wall. A ledger plate is fastened to the wall to attach the soffit at that location. On narrow eaves the rafter ends serve to fasten the soffit and fascia. These can be repaired, or soffits can be installed to create closed eaves.Ĭlosed eaves may be wide or narrow, depending on the roof design. These homes can be left as is, or soffits can be added. Older homes often have an open eave, with the rafters adding to the décor. In most instances the cornice or eave of today’s homes are finished off with a soffit-the covering on the underside of the overhang. Not only does the cornice add to the appearance of the home, it also helps protect the building from sun, rain and snow. This is created by extending the rafters out past the building ends. Most gable roofs also have a rake cornice or rake extension formed on the gable ends. A gable roof has a cornice along the side walls, formed at the rafter ends. Hip roofs have a continuous cornice that extends completely around the building. Soffits are actually part of the cornice or eave, the point where the roof projection and the side walls of the building meet. the latter is normally a remodeling chore. House eaves may be open without soffits, common in new construction, or closed off with soffits. They are, however, extremely important to the longevity and comfort of your home. Soffits are the Rodney Dangerfield of home construction-they’re mostly unseen and often the last detail to get attention. Alternative Heating & Fireplace Inserts.
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