Figure 6-38.-Miter-joining at inside corners.the mark on the floor intersects the bottom edge. Lay45° lines across the edge from these points to make a90° corner. Connect these lines with a line across theface (view B), and miter to the lines as indicated.The most economical, and sometimes the quickest,method of installing baseboard is to use vinyl. Inaddition to its flexibility, it comes with premolded insideand outside corners. When installing vinyl base, followthe manufacturer’s recommended installationprocedures for both the base and adhesive.CEILING MOLDINGCeiling moldings (fig. 6-39) are sometimes used atthe junction of the wall and ceiling for an architecturaleffect or to terminate drywall paneling of gypsum boardor wood. As with base moldings, inside corners shouldbe cope-jointed (fig. 6-39, view A). This ensures a tightjoint and retains a good fit if there are minor moisturechanges.A cutback edge at the outside of the molding (viewB) partially conceals any unevenness of the plaster andmakes painting easier where there are color changes. Forgypsum drywall construction, a small, simple molding(view C) might be desirable. Finish nails should bedriven into the upper wall plates and also into the ceilingjoists for large molding when possible.DECORATIVE TREATMENTThe decorative treatment for interior doors, trim,and other millwork may be painted or given a naturalfinish with stain, varnish, or other nonpigmentedmaterial. The paint or natural finish desired for thewoodwork in various rooms often determines thespecies of wood to be used.Figure 6-39.-Ceiling moldings.Interior finish to be painted should be smooth,close-grained, and free from pitch streaks. Speciesmeeting these requirements include ponderosa pine,northern white pine, redwood, and spruce. Birch, gum,and yellow poplar are recommended for their hardnessand resistance to hard usage. Ash, birch, cherry, maple,oak, and walnut provide a beautiful natural finishdecorative treatment. Some require staining to improveappearance.RECOMMENDED READING LISTNOTEAlthough the following referenceswere current when this TRAMAN waspublished, their continued currencycannot be assured. You therefore needto ensure that you are studying thelatest revisions.Carpentry, Leonard Keel, American TechnicalPublishers, Inc., Alsip, Ill., 1985.Exterior and Interior Trim, John E. Ball, DelmarPublishers, Inc., Albany, N.Y, 1975.Wood Frame House Construction, L.O. Anderson,Forest Products Laboratory, U.S. Forest Service,U.S. Department of Agriculture, Washington, D.C.,1975.6-25
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