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Home Page - build-home-building-house.com The cornice is the overhang of the roof at the eaves line that forms a connection between the roof and the sidewalls. In a gable roof, it is formed on two sides of the building. The cornice continues around all four sides on a hip or flat roof. The three types of cornices, frequently used in residential buildings are the open cornice, box cornice and close cornice. The open cornice in figure C-1 may be used with exposed beam construction, contemporary or rustic designs. Rafter ends are exposed and are usually tapered to prevent a bulky appearance Ther are three basic types
of box cornices: The narrow box, wide box with lookouts and wide box with lookouts.
A narrow box cornice is usally between 6 and 12 inceswide. The sofit board is nailed
directly to the bottom side of the rafter, Figure C-2. A wide cornice with lookouts
normally requires additional support members (lookouts) for fastening the sofit.
Figure C-3 shows a wide box cornice with lookouts. A wide box cornice without loofouts
has a sloped sofit. The sofit material is nailed to the underside of the rafters,
This type of cornice is frequently used when overhangs are very wide, Figure C-4.
A closed cornice is one in which the rafter does not project beyond the wall . The
roof is terminated by a frieze board and molding, Figure C-6 |
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