TEC Grout Calculator — Power Grout & AccuColor Coverage

About 192 ft² of 12 × 12 in tile with 1/8 in joints at 8 mm depth (10 lb ÷ 0.052 lb/ft², where 0.052 lb/ft² = 0.164 L/m² × 1.55 kg/L × 0.2048). A 2 × 2 in mosaic at 1/16 in joints drops that to 88 ft² (0.114 lb/ft²), while 24 × 24 in tile at 3/16 in stretches the box to 204 ft². Apply your waste percentage to the computed need before counting boxes.

No — Prism SureColor is Custom Building Products' flagship grout, sold beside TEC on the same big-box shelves, which is exactly why the two brands blur together. Both are premium stain-proof cement grouts sold in 10 lb boxes with near-identical coverage (Prism's 1.50 kg/L density makes it ~3% thriftier per pound than Power Grout's 1.55 kg/L). The correct pick is decided by color matching and availability, not coverage math — the comparison table below spells out the differences.

AccuColor is TEC's classic cement line: sanded for 1/8 in and wider joints, unsanded below, sold in 25 lb bags at 1.62 kg/L (0.054 lb/ft² on 12 × 12 at 1/8 in). Power Grout is the upgraded single-product answer — one fine-aggregate formulation covers 1/16 in to 1/2 in joints, with stain resistance built in and a 10 lb box format. Coverage differs by 4% (0.054 vs 0.052 lb/ft²); price per pound and joint-range convenience are the real decision.

One 9 lb kit (4.08 kg at 1.75 kg/L mixed) yields ≈ 2.33 L. At the reference 12 × 12 in / 1/8 in / 8 mm layout that fills 0.164 L/m², so one kit covers ≈ 153 ft²; a 2 × 2 in mosaic at 1/16 in cuts it to ≈ 70 ft². EFX's specialty fillers (recycled glass and shimmer effects) do not change the volume math — you buy liters of joint volume, always.

No — Power Grout is rated for intermittently wet areas, not continuous immersion. Submerged joints need a 100% solids epoxy: TEC's AccuColor EFX or a Spectralock-class competitor. The failure mode is chemistry, not application skill — cementitious grout leaches and stains under permanent water load regardless of how well it was installed.

The published chart carries a roughly 12% job-site allowance and assumes an 8 mm joint depth for its reference rows, so a 10 lb box prints lower coverage than raw joint math (192 ft² computed vs about 170 ft² on the chart). Depth explains most site gaps: moving from 8 mm to 9.5 mm real tile thickness raises consumption 19%. Align your depth input first, then compare — the remaining difference is the chart's allowance, not an error.

Joint width decides: under 1/8 in (3 mm) take unsanded, from 1/8 in upward take sanded, and Power Grout's fine aggregate covers the entire 1/16–1/2 in range in one box. Density shifts slightly with sand content (unsanded ≈ 1.58 kg/L, sanded ≈ 1.65 kg/L), which moves coverage under 5% — the bag count almost never changes between the two for the same layout.

No. This page is an independent tool, not affiliated with or endorsed by TEC/H.B. Fuller Construction Products. Densities and packaging follow TEC's published data; consumption figures are computed from joint geometry and clearly labeled as estimates. Verify final quantities against the official TEC coverage chart and the label on the box you buy.