Advantages of Drywall Correct Answer-Saves time in construction-it
has a short drying time and many types for multiple uses.
Requirements for drywall Correct Answer-Moderately low moisture
content of framing members. Otherwise drying out of framing members
will result in "nail pops", which causes the nail head to form small
"humps" on the surface.
Stud alignment Correct Answer-Misalignment will cause a wavy,
uneven appearance.
Ceiling joist alignment Correct Answer-Strong backs provide for
alignment of ceiling joists and can be used at the center of a span when
ceiling joists are uneven.
Regular Gypsum Panels Correct Answer-Used for single and multi-layer
application. Applied to interior walls and ceilings. Tapered edge for
effective joint concealment.
Pre-decorated drywall Correct Answer-Has rounded or beveled edges
Type X Correct Answer-Drywall has special additives that make it fire
resistant.
, Water resistant/WR or Moisture resistant/MR Correct Answer-Special
moisture- resistant core and paper cover that is chemically treated to
repel moisture.
Also referred to as green board
Used in areas that are subject to high moisture. ( bathrooms, laundries,
and commercial kitchens)
backing board Correct Answer-Designed to be used as a base layer in
multi-layer systems. Has a gray paper lining on both sides and is not
suited for finishing or decorating.
Sound deadening Correct Answer-Board is used as a sub layer with
other types of drywall (usually type X) often only 1/4" thick.
Foil-Backed Board Correct Answer-Used as a vapor barrier on exterior
walls; available in various thicknesses.
Vinyl-Surfaced Board Correct Answer-Available in a variety of colors;
is attached with special drywall finish nails and edges are left exposed
without joint treatment.
Plasterboard or Gypsum Lath Correct Answer-Used as plaster base,
replacing wood or metal lath in new construction and renovation. It is
available in 16" and 24" widths and usually 48" long. Not compatible
with Portland cement.