What penetration are face layers sheetrock fastener, GWB-54, required
by code to provide Correct Answer-3/4" penetration
What causes cracking or wrinkling at taped edges of drywall Correct
Answer-Very rapid drying
Where should the first nails be spaced in the double nailing method for
attaching sheetrock board to wood framing. Correct Answer-12" on
center along the supports in the field in sheetrock
What type of lath is used as the plaster base, when plastering ceilings in
garages Correct Answer-Metal lathe
three coat work requires...
finish coat, brown coat, scratch coat, all the above Correct Answer-all
the above
for what period of time must the scratch coat be cured Correct Answer-
not less than 48 hours
how is chicken wire ordered Correct Answer-by the roll
the lath used for plaster finish is...
, metal, gypsum, insulation fiberboard, all the above Correct Answer-all
the above
which of the following has the greatest insulating value?
fibers, gypsum lath, insulating fiberboard Correct Answer-Insulating
fiberboard
stucco adheres best to which of the following?
mineral laths, wire laths, plaster boards, gypsum laths Correct Answer-
Wire laths
Over which types of bases may Portland cement plaster be applied? A)
Wire B) Masonry C) Gypsum D) both Wire and Masonry Correct
Answer-both Wire and Masonry - not gypsum
Gypsum is what type of Lath Correct Answer-Mineral lath
Gypsum mortar sets Correct Answer-Faster than lime mortar
Metal lath is usually applied with the long dimension of the sheet in a/an
Correct Answer-horizontal direction
What is the principle binder in gypsum products Correct Answer-Lime