Tools, Equipment and Materials
The tools, equipment and materials domain tests whether you can match the right tool to a task and explain the consequence of the wrong choice. Expect questions on trowel notch geometry, roller weights, fastener gauges, moisture meters and material compatibility rather than brand names.
Measuring, layout and diagnosis
- Tape, 10 ft straightedge, laser or water level, chalk line, 3-4-5 square.
- Concrete moisture: ASTM F1869 calcium chloride kits and ASTM F2170 in-situ relative humidity probes. Wood: pin or pinless moisture meter. These are diagnostic tools, not optional extras.
Surface preparation
- Hand grinder with diamond cup wheel and dust shroud, self-levelling spreader, floor scraper, HEPA vacuum, priming roller, patching trowel.
- A worn or flattened trowel notch spreads less adhesive than the specification requires - replace the trowel rather than pressing harder.
Adhesive, rolling and seam tools
- Notched trowel: notch shape and depth set the spread rate. V-notch for sheet goods, square notch for large-format tile and some LVT, fine 1/16 in. notches for thin adhesives.
- 100 lb roller for resilient flooring, two passes; hand seam roller for carpet and vinyl seams; seam iron, seam tape, seam sealer.
Carpet tools
- Tack strip, power stretcher, knee kicker for positioning only, stair tool, wall trimmer, carpet trimmer, staple hammer.
Hardwood, laminate and tile
- 15.5-gauge stapler or 18-gauge cleat nailer for solid hardwood; tapping block, pull bar, jamb saw, spacers; diamond wet saw or snap cutter, grout float, margin trowel, levelling clips, nippers.
Material knowledge
- Resilient: sheet vinyl, LVT, rigid SPC core, linoleum, rubber, cork. Carpet: broadloom versus modular, fibre and backing type. Wood: solid versus engineered; laminate is a separate category. Tile: ceramic, porcelain (water absorption under 0.5%) and natural stone.
Worked example
A specification calls for a 1/4 × 3/8 in. square-notch trowel and rolling with a 100 lb roller within 30 minutes. The installer has only a 1/8 × 1/8 in. U-notch and a 75 lb roller. Reasoning: the small U-notch lays roughly a third of the required adhesive, so ridges will not bridge the backing and the floor will telegraph and debond; the 75 lb roller will not collapse the ridges. Obtain the correct tools - adhesive coverage is what the warranty depends on.
Traps
- Using a knee kicker as the only stretcher.
- Running a dull diamond blade, which chips glaze and overheats.
- Fasteners too long for 3/4 in. flooring, punching through and showing as bumps.