reprinted courtesy of ServiceMagic.com
Wood sidings are milled in various
patterns for both horizontal and vertical application. Wood siding
is usually, but not always, applied over solid sheathing and a
layer of building paper. Horizontal patterns are nailed through
sheathing into studs; vertical patterns generally are nailed to
horizontal nailing or furring strips. Horizontal sidings are always
applied so that each board overlaps the one below it; in some
cases, the edges are milled to interlock, as they are with all
vertical patterns.
Wood panel hardboard and plywood sidings are manufactured in sheet form. They're available in a standard width of 4 feet and lengths of 8, 9, and 10 feet. Made in a variety of thickness' and patterns, sheet sidings are often applied directly to wall studs, without sheathing.
-- Tips courtesy of Service Magic