Drywall
Vinyl-Surfaced Board
Available in a variety of colors; is attached with special drywall finish nails and edges are left exposed without joint treatment
Ceiling screw distance
12" apart
Wall screw distance
16" apart
Thickness for a face layer
3/8"
Drywall dimensions
4 x 8, 9, 10, 12, 14, 16 4 x 8 and 4 x 12 are the most common
Ceiling nail spacing
7"
Wall nail spacing
8"
Advantages of drywall
Saves time in construction-it has a short drying time and many types for multiple uses
6" finishing knife
Used to bed tape in the first layer of joint compound and for filling nail or screw dimples
Prolonged tackiness
applying paint too thick; low quality vehicle
What is drywall with a 1/4" thickness used for?
base layer in multilayer applications or to cover existing drywall
Blistering
caused by excess heat; moisture accumulates under the paint
weather stripping
designed to reduce heat loss around doors and windows
How often should corner bead be nailed or screwed?
every 5"
what is drywall with 3/8" thickness used for?
face layer; repair or remodeling work over existing surfaces
Types of insulation
flexible, loose fill, rigid, and reflective
Drywall has tapered edges for what reason?
for taping and filling with joint compound
pigment
gives paint the color, durability, abrasion resistance,
Peeling
inadequate surface preparation; caused when paint is applied to a wet, dirty, oil, waxy or glossy surface
crawling
latex paint is applied over high gloss enamel or when paints are applied over silicone water repellent
vehicle
material that holds the pigment together and adheres to surfaces
What should you not do when double nailing?
nail around the perimeter
Where is drywall first installed?
on the ceiling
varnish
paint that provides a hard glossy transparent coating
Double nailed spacing
pairs are 12" apart, each pair 2" to 2.5" apart
3 types of joint tape
perforated/non-perforated paper tape and fiber mesh tape
What is a dimple?
pocket that is created and filled with joint compound
Lacquers
produces a firm oil and water resistance film
Purposes of painting
protection preventative maintennance sanitation fire retard camo illumination and visibility
When using adhesives, what must also be used?
screws or nails
Type S
screws used in metal studs
Type W
screws used in wood studs
what are 1/2" and 5/8" drywall used for?
single layer wall and ceiling application
Alligatoring
uneven expanison and contraction of the undercoat; caused by applying enamel over oil primer
Plasterboard
used as a plaster base, replacing wood or metal lath 16" or 24" wide x 48" long
Foil Backed board
used as a vapor barrier on exterior walls
shellac
used as finishing material and sealant; applied over knots
Thinner/solvent
used to adjust the consistency of paint
types of flexible insulation
Blanket and batt
Backing board
Designed to be used as a base layer in multi-layer systems. Has a grey paper lining on both sides and is not suited for finishing or decorating
Type X
Fire resistant
What type of nails are most frequently used?
Annular Ring Nails
What size gaps are acceptable when cutting drywall
1/2"
Thickness for single layer
1/2" or 5/8"
Thickness for a base layer
1/4"
What angles does the corner trowel go to?
103 to 90
What size corner bead for 3/8" or 1/2" drywall?
1"x1"
what size corner bead for 1/2" or 5/8" drywall?
1"x1.25"
what size corner bead for double layer drywall?
1.25"x1.25"
caulk
Composite material used to seal joints, crack and small openings
Requirements for drywall
Low moisture in framing members Stud Alignment Ceiling Joist Alignment
Water Resistant or Green board
Moisture resistant core and paper. Used in Bathrooms, Kitchens, Laundry areas, etc.
Types of paint
Oil enamel epoxy latex rubber portland cement aluminum
Stains
Oil Stain Water Stain Spirit Stain Chemical Stain
Multiflex tape bead
Two continuous metal strips on the undersurface of 2 1/8" wide reinforcing tape. Allows protection of corners formed at any angle. Available in 100' rolls
Sound Deadening
Used as a sub layer with other types of drywall (usually type x) 1/4" thick
16" finishing knife
Used for applying 3rd coat of joint compound
12" finishing knife
Used for feathering out the second layer of joint compound and is usually adequate for the third or topping layer