Use and Care Guide

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Open Time . . . . . . . . . . . . . . . . . . . .Length of time after applying joint or topping compound in which joint can be crossed without roughing
the surface of the compound. Syn: tearing, scuffing, roll up.
Photographing Joint . . . . . . . . . .Joints and nail spots that appear as a different color or sheen after painting.
and Nail Spots Syn: photographs, poor hide, flashing, picture framing.
Pock Marking . . . . . . . . . . . . . . . . .Small openings in the surface of the joint or topping compound. Syn: air bubbles, cratering, pocking, bubbling, balloons.
Pumpability . . . . . . . . . . . . . . . . . .Ease with which a spray material pumps through spray equipment.
Ridging/Beading . . . . . . . . . . . . . .A condition where flat joints become visible under critical lighting showing a narrow bead or ridge in the center
of the joint. No loss of bond. Syn: ridging, picture framing.
Second Finishing Coat . . . . . . . . .Application of the second coat of joint or topping compound over tape, bead and nails. Syn: third coat, finishing,
finish bed, polishing, feather coat, skimming.
Sheen Variation . . . . . . . . . . . . . . .Joints or nail spots that appear with more or less sheen than the wallboard. Commonly seen with semi-gloss paints,
but can also show with latex or oil flat paints without prime coating. Syn: high sheen, low sheen, highlighting.
Shooting Fat . . . . . . . . . . . . . . . . . .Applying spray material at a heavy consistency.
Shooting Loose . . . . . . . . . . . . . . .Applying spray material at a thin consistency.
Shrinkage Cracking . . . . . . . . . . .Cracking that occurs with joint or topping compound when applied too thick in one application. Cracks are
irregular and common along metal corner bead and over wide joints. Syn: map checking, map cracking.
Skim Coat . . . . . . . . . . . . . . . . . . . .A thin coat of joint compound, or a material manufactured especially for this purpose, applied over the entire
surface to fill imperfections in the joint work, smooth the paper texture, and provide a uniform surface for decorating.
Excess compound is immediately sheared off, leaving a film of skim coating compound completely covering the paper.
Solution Time . . . . . . . . . . . . . . . . .Time required after mixing joint or topping compound to obtain optimum working qualities. Syn: take up, let down.
Spotting Nails . . . . . . . . . . . . . . . .Application of joint finishing compound to nail heads and dimples. Syn: spotting, nail coating.
Starved Joint . . . . . . . . . . . . . . . . .Depression in the joint over tapered joints. Also seen as depressions on each side of the tape on a butt joint.
Syn: low point, delayed shrinkage, concave joint.
Surging . . . . . . . . . . . . . . . . . . . . . . .Spray equipment problem which results in material not pumping in a steady stream.
Tape Photographing . . . . . . . . . .Outline of tape is visible in corners and flat joints after joints are finished. Syn: railroading, tape floating,
tape ghosting. Sometimes incorrectly called shrinkage.
Taping . . . . . . . . . . . . . . . . . . . . . . . .Application of joint compound and joint tape on gypsum wallboard joints. Syn: embedding tape, first coat, hanging,
laying tape, bedding, roughing, joint finishing.
Texturing . . . . . . . . . . . . . . . . . . . . .Application of texture by roller, spray, brush or other method. Syn: stippling.
Tooth . . . . . . . . . . . . . . . . . . . . . . . . .Surface porosity and its ability to promote bond with joint or topping compound, textures and paints.
Syn: porosity, suction, grab.
Vertical Application . . . . . . . . . . .Application of gypsum wallboard with the length parallel to the nailing members. Syn: with the studs and joists.
Wet Edge . . . . . . . . . . . . . . . . . . . . .Length of time joint or topping compound can be worked while maintaining a smooth feathered edge.
Syn: fast drying, poor water retention, bodying, thickening, roll up, ragging.
Wet Hide . . . . . . . . . . . . . . . . . . . . .The ability of a coating or texture to completely hide substrate when wet.
Wipe Down . . . . . . . . . . . . . . . . . . .Cleanup of overspray on walls after spraying ceilings using a long-handled wide steel blade.
Working Life . . . . . . . . . . . . . . . . . .Length of time joint or topping compound can be worked and re-used. Syn: water retention, plasticity.