Figure 6-38.-Miter-joining at inside corners.
the mark on the floor intersects the bottom edge. Lay
45° lines across the edge from these points to make a
90° corner. Connect these lines with a line across the
face (view B), and miter to the lines as indicated.
The most economical, and sometimes the quickest,
method of installing baseboard is to use vinyl. In
addition to its flexibility, it comes with premolded inside
and outside corners. When installing vinyl base, follow
the manufacturers recommended installation
procedures for both the base and adhesive.
Ceiling moldings (fig. 6-39) are sometimes used at
the junction of the wall and ceiling for an architectural
effect or to terminate drywall paneling of gypsum board
or wood. As with base moldings, inside corners should
be cope-jointed (fig. 6-39, view A). This ensures a tight
joint and retains a good fit if there are minor moisture
A cutback edge at the outside of the molding (view
B) partially conceals any unevenness of the plaster and
makes painting easier where there are color changes. For
gypsum drywall construction, a small, simple molding
(view C) might be desirable. Finish nails should be
driven into the upper wall plates and also into the ceiling
joists for large molding when possible.
The decorative treatment for interior doors, trim,
and other millwork may be painted or given a natural
finish with stain, varnish, or other nonpigmented
material. The paint or natural finish desired for the
woodwork in various rooms often determines the
species 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. Species
meeting these requirements include ponderosa pine,
northern white pine, redwood, and spruce. Birch, gum,
and yellow poplar are recommended for their hardness
and resistance to hard usage. Ash, birch, cherry, maple,
oak, and walnut provide a beautiful natural finish
decorative treatment. Some require staining to improve
RECOMMENDED READING LIST
Although the following references
were current when this TRAMAN was
published, their continued currency
cannot be assured. You therefore need
to ensure that you are studying the
Carpentry, Leonard Keel, American Technical
Publishers, Inc., Alsip, Ill., 1985.
Exterior and Interior Trim, John E. Ball, Delmar
Publishers, 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.,