Contractor exam C-33 trade;Contractors exam painting
and decorating updated 2023 with complete solution
If a spot of latex paint on wood remove it by
Scraping with a knife
When working with a new wood, fill nails holes cracks and small holes
After priming
Natural shellac is derived from secretions of
Lac insects
The proper way to treat stains caused by rusted nail heads is to
Sand, countersink nail, prime , fill and finish with two coats
The liquid portion of paint is called
The vehicle
How should you clean a greasy kitchen wall prior to painting
With trisodium phosphate
Which is the preferred primer for knots in wood
Shellac
Best undercoat for new wood casing is
Enamel
In general painting over wet surface will result in
Blistering
When should you apply a seaming roller
Immediately
Which improves the opacity of paint
Binder
A scale 1/4" refers to
4'=1"
What flame spread classification is acceptable for a residential exit corridor
Class iii
Which is best material to coat a wood deck
Spar varnish
What will most Likely happen if a back in a stucco wall is filled with silicone caulk
The paint will not cover
What is best material to fill in a crack in an interior wall
Sparkle
Where is efflorescence found
Concrete and masonry surface
Which of the following will give you the smoothest finish when painting a door
with latex paint
A sprayer
How long should you wait before painting after applying gypsum veneer plaster
4 weeks
Which of the following components of paint affects the adhesions of the surface
Binder
, When painting a window with a wood sash how far from the sash should the tape
be placed
1/4"
Why is breathable paint useful for exteriors
It won't blister
ALUMINUM preperation
remove corrosion with wire brush remove oil and grease with solvents or steam etch
unweathered aluminum with 10 % phosphoric acid and rinse prime with zinc chromate
SURFACE PREPARATION BRICK
e remove dirt, excess mortar, efflorescence, etc. by brush, air, or e weather for one
month before finishing with latex e can be sealed with a latex primer-sealer, a clear
resin, or a clear silicone water repellant
SURFACE PREPARATION CONCRETE
wash old concrete surfaces with detergent to remove oil and dirt, etch new (but cured)
concrete surfaces with acid weather for one month before finishing with latex e if
porous, use block filler or a cement grout/latex primer e if grouted or chalking, apply an
alkali-resistant primer (e.g., clear phenolic or alkyd resin coating) . may be sealed with a
clear silicone water repellant
SURFACE PREPARATION CONCRETE BLOCK
must dry . if porous, use a block filler or a cement grout/latex primer
SURFACE PREPARATION CONCRETE FLOOR
etch with a muriatic acid wash to improve adhesion prime with alkali- and water-
resistant sealer
SURFACE PREPARATION GYPSUM BOARD (DRYWALL)
prime with PV A sealer (not alkyd or oil primers, which will raise the nap) finish with
latex or alkyd
SURFACE PREPERATION IRON, GALVANIZED
Remove grease, residue, and corrosion with a solvent or chemical wash if unweathered,
etch with a weak acid wash if weathered, treat as a ferrous metal e use a rust-inhibiting
primer such as zinc chromate
SURFACE PREPARATION METAL, FERROUS
clean corrosion from the surface e prime with alkyd metal primer
SURFACE PREPARATION PLASTER and STUCCO month
cure at least one month at 60°F or more soft surfaces should be hardened with a mild
acid (e.g., vinegar) or zinc sulfate wash check for moisture before sealing e prime with a
PVA or alkyd primer/sealer prime highly alkaline surfaces or rough plaster with an alkali-
resistant latex or alkyd
SURFACE PREPARATION SHINGLES, WOOD
prime before nailing by dipping shingle in shingle stain, house paint thinned to shingle-
stain consistency, or thin boiled linseed oil finish with stain or paint
SURFACE PREPARATION STEEL
clean with solvent, wire brush, sand blasting, tooling, or acid wash . prime with an alkyd
rust-inhibiting coating
SURFACE PREPARATION STEEL
clean with solvent, wire brush, sand blasting, tooling, or acid wash prime with an alkyd
rust-inhibiting coating
and decorating updated 2023 with complete solution
If a spot of latex paint on wood remove it by
Scraping with a knife
When working with a new wood, fill nails holes cracks and small holes
After priming
Natural shellac is derived from secretions of
Lac insects
The proper way to treat stains caused by rusted nail heads is to
Sand, countersink nail, prime , fill and finish with two coats
The liquid portion of paint is called
The vehicle
How should you clean a greasy kitchen wall prior to painting
With trisodium phosphate
Which is the preferred primer for knots in wood
Shellac
Best undercoat for new wood casing is
Enamel
In general painting over wet surface will result in
Blistering
When should you apply a seaming roller
Immediately
Which improves the opacity of paint
Binder
A scale 1/4" refers to
4'=1"
What flame spread classification is acceptable for a residential exit corridor
Class iii
Which is best material to coat a wood deck
Spar varnish
What will most Likely happen if a back in a stucco wall is filled with silicone caulk
The paint will not cover
What is best material to fill in a crack in an interior wall
Sparkle
Where is efflorescence found
Concrete and masonry surface
Which of the following will give you the smoothest finish when painting a door
with latex paint
A sprayer
How long should you wait before painting after applying gypsum veneer plaster
4 weeks
Which of the following components of paint affects the adhesions of the surface
Binder
, When painting a window with a wood sash how far from the sash should the tape
be placed
1/4"
Why is breathable paint useful for exteriors
It won't blister
ALUMINUM preperation
remove corrosion with wire brush remove oil and grease with solvents or steam etch
unweathered aluminum with 10 % phosphoric acid and rinse prime with zinc chromate
SURFACE PREPARATION BRICK
e remove dirt, excess mortar, efflorescence, etc. by brush, air, or e weather for one
month before finishing with latex e can be sealed with a latex primer-sealer, a clear
resin, or a clear silicone water repellant
SURFACE PREPARATION CONCRETE
wash old concrete surfaces with detergent to remove oil and dirt, etch new (but cured)
concrete surfaces with acid weather for one month before finishing with latex e if
porous, use block filler or a cement grout/latex primer e if grouted or chalking, apply an
alkali-resistant primer (e.g., clear phenolic or alkyd resin coating) . may be sealed with a
clear silicone water repellant
SURFACE PREPARATION CONCRETE BLOCK
must dry . if porous, use a block filler or a cement grout/latex primer
SURFACE PREPARATION CONCRETE FLOOR
etch with a muriatic acid wash to improve adhesion prime with alkali- and water-
resistant sealer
SURFACE PREPARATION GYPSUM BOARD (DRYWALL)
prime with PV A sealer (not alkyd or oil primers, which will raise the nap) finish with
latex or alkyd
SURFACE PREPERATION IRON, GALVANIZED
Remove grease, residue, and corrosion with a solvent or chemical wash if unweathered,
etch with a weak acid wash if weathered, treat as a ferrous metal e use a rust-inhibiting
primer such as zinc chromate
SURFACE PREPARATION METAL, FERROUS
clean corrosion from the surface e prime with alkyd metal primer
SURFACE PREPARATION PLASTER and STUCCO month
cure at least one month at 60°F or more soft surfaces should be hardened with a mild
acid (e.g., vinegar) or zinc sulfate wash check for moisture before sealing e prime with a
PVA or alkyd primer/sealer prime highly alkaline surfaces or rough plaster with an alkali-
resistant latex or alkyd
SURFACE PREPARATION SHINGLES, WOOD
prime before nailing by dipping shingle in shingle stain, house paint thinned to shingle-
stain consistency, or thin boiled linseed oil finish with stain or paint
SURFACE PREPARATION STEEL
clean with solvent, wire brush, sand blasting, tooling, or acid wash . prime with an alkyd
rust-inhibiting coating
SURFACE PREPARATION STEEL
clean with solvent, wire brush, sand blasting, tooling, or acid wash prime with an alkyd
rust-inhibiting coating
