16–5 Wallboard Types
There are various types of wallboards available for use in
drywall construction; among them are gypsum wallboard,
tiles, wood panels, and other miscellaneous types. The vari-
ous types and the special requirements of each are included
in this section.
Gypsum Wallboard. Gypsum wallboard is composed of
a gypsum core encased in a heavy manila-finished paper on the
face side and a strong liner paper on the backside. It is available
in a 4-foot width and lengths ranging from 8 to 16 feet, with
thicknesses of 1/4, 3/8, 1/2, and 5/8 inches. It is available in
regular, fire-resistant (Type X), and moisture-resistant.
Tiles. Tiles used in drywall construction are most com-
monly available in gypsum, wood and mineral fibers, vinyl,
plastic, and metal. Thicknesses vary from 3/16 to 2^13 ⁄ 16 inches.
The most common thicknesses are 1/2, 5/8, and 3/4 inch,
with the tile sizes being 12 12, 12 24, 12 36, 16 16,
16 32, 24 24, and 24 48 inches. Not all sizes are available
in each type, and all manufacturers must be checked to deter-
mine what they stock.
In addition to different materials, tiles come in a variety
of surface patterns and finishes. They may be acoustical or
nonacoustical, and may possess varying edge conditions,
light reflection, sound absorption, flame resistance, and
flame spread. Tile is even available with small slots that can
be opened to provide ventilation in the space below. Plastic
louvers and translucent panels are also available.
Prices may be quoted by the piece, square foot, square
yard, or particular size package. A square-foot takeoff will
provide the estimating information required.
Tile may be applied to various supporting constructions
and is often used in conjunction with suspended ceilings.Wood Panels. Available in many different wood veneers
and a variety of finishes, panels are usually 4 feet wide, with
lengths varying from 6 to 16 feet. The panels may be con-
structed of a solid piece of wood or laminated plywood with
cores of veneer, flakeboard, or lumber. Either hardwood or
softwood may be used.
The estimator must read the specifications carefully to
determine exactly what type of paneling is required.
Although inexpensive paneling is available at $6 to $15 per
sheet and moderately priced panels from $25 to $50 per
sheet, some paneling sells for $150 or more per sheet when
special face patterns are required. The estimator should
never guess at a price for materials, but rather always get a
written quote from suppliers and manufacturers.
Paneling is taken off by the square foot, square yard,
panels required, or square. The fastening device and trim to
be used must be noted in the estimate.Miscellaneous Panels. Many types of panels are used
on walls and ceilings. The majority of them will be priced by
the square foot. Among the types available are vinyl-coated
plywood, plastic-coated plywood, hardboards, and metal-
coated panels. Each separate type has its own method of fas-
tening, accessories, and requirements. The estimator should
always check with the manufacturer for installation recom-
mendations.Specifications. Items that should be checked are the type,
thickness, sheet size, and method of attachment required.200 CHAPTER SIXTEEN
FIGURE 16.5.Typical Drywall Assemblies.