NCCER Painter flashcards
NCCER Painter · Build recall with a focused review session.
32 cards. Read the term and the definition here. The deck at the top of this page is optional.
- Theoretical coverage formula
- Coverage in square feet per gallon equals 1,604 times the solids fraction divided by dry film thickness in mils; this ignores application loss.
- Wet film thickness formula
- Wet film thickness equals dry film thickness divided by the solids fraction. For 2 mils dry at 50 percent solids, apply 4 mils wet.
- Ladder 4-to-1 rule
- For every 4 feet of working height, place the ladder base 1 foot from the wall; the resulting angle is about 75.5 degrees.
- SDS Section 8
- Section 8 of a safety data sheet lists exposure controls and personal protection, including occupational exposure limits and engineering controls.
- VOC content formula
- VOC in grams per liter equals the grams of volatile organic compounds divided by the coating volume in liters, using the regulatory method specified.
- SSPC-SP 10
- Near-white blast cleaning removes nearly all rust, mill scale, and old coating, leaving only slight staining; it is less thorough than SSPC-SP 5 white metal.
- Blast profile measurement
- Surface profile is the anchor pattern depth created by abrasive blasting; it is checked with a comparator or replica tape and measured in mils.
- Concrete pH test
- New concrete is tested for pH before coating; many coatings require a pH of 10 or lower, and the slab must also meet moisture limits.
- Wood moisture limit
- Wood should generally be at 12 to 15 percent moisture content or less before painting; a moisture meter verifies the reading.
- Galvanized metal prep
- Clean galvanized steel, remove oil, and etch or apply a galvanized-compatible primer; alkyds applied directly may fail from poor adhesion.
- Alkyd coating
- Alkyd is a solventborne oil-modified resin coating that cleans with mineral spirits, provides gloss and adhesion, and can yellow in low light.
- Acrylic latex coating
- Acrylic latex is a waterborne coating that cleans with soap and water, has low odor, remains flexible, and is common on interior and exterior walls.
- Epoxy pot life
- Pot life is the usable time after a two-component epoxy is mixed; after this time the mixture thickens and should not be applied.
- Amine blush
- Amine blush is a waxy surface film that can form on cured epoxy; it must be removed by washing or sanding before recoating.
- Metamerism
- Metamerism is when two colors appear to match under one light source but differ under another; evaluate color under the specified lighting.
- Shellac primer use
- Shellac is a stain-blocking primer used over knots, water stains, and tannin bleed; it seals the stain so it does not bleed through the topcoat.
- Natural bristle brush use
- Natural-bristle brushes are used with solventborne paints and varnishes; waterborne coatings soften natural bristles, so synthetic filaments are preferred.
- Roller nap selection
- Use 1/4 to 3/8 inch nap on smooth surfaces, 1/2 to 3/4 inch on light texture, and 3/4 inch or more on rough masonry.
- Airless tip orifice
- Airless spray tip size is the orifice diameter in thousandths of an inch; larger tips increase flow and smaller tips produce finer atomization.
- HVLP sprayer
- HVLP means high volume, low pressure; it uses a high-volume air stream at low pressure to improve transfer efficiency and reduce overspray.
- Zahn cup viscosity
- A Zahn cup measures viscosity by the time in seconds for a fixed volume of coating to drain through the cup's orifice.
- Wallcovering strip count
- Divide the wall perimeter by the usable roll width to find the number of strips; then divide roll length by cut length to find rolls.
- Straight pattern match
- A straight match aligns the pattern at the same horizontal point on every strip; the repeat height determines the cut length.
- Drop pattern match
- A drop match offsets alternating wallcovering strips by half the repeat; the cut length must allow for the offset and matching waste.
- Venetian plaster
- Venetian plaster is a lime-based decorative plaster applied in thin layers and burnished to a polished, marble-like finish.
- Stenciling bleed control
- Use low-tack stencil adhesive and a nearly dry brush or roller so paint does not seep under the stencil edges.
- Labor hour estimate
- Labor hours equal the area to be coated divided by the production rate in square feet per hour; add factors for access and surface difficulty.
- Paint quantity estimate
- Divide the area by coverage per gallon, multiply by the number of coats, and add 5 to 10 percent for waste and touch-up.
- Markup versus margin
- Markup is profit divided by cost; margin is profit divided by selling price. A 25 percent markup is only a 20 percent margin.
- Labor burden
- Labor burden is the additional cost of payroll taxes, insurance, benefits, and workers' compensation, usually applied as a percentage of base wages.
- Change order
- A change order documents a scope change, its price, schedule impact, and customer approval before the extra work proceeds.
- Compressor CFM requirement
- A spray gun needs its required CFM at the gun pressure; compressor output must account for hose loss and other air users.