Prism® Ultimate Performance Grout

Product ID: TDS-128

Prism® Ultimate Performance Grout sets a new standard in cement based grout technology. Prism’s calcium Aluminate cement based, latex polymer-modified formula offers consistent color with no shading regardless of tile type, temperature or humidity, and it will not effloresce. The rapid setting formula results in high early strength and dense grout joints up to 1/2″. A unique blend of lightweight recycled glass and fine aggregate sand allows for a smooth consistency that is easy to spread and clean.

  • Uniform consistent color
  • Won’t mottle or shade regardless of tile type, temperature or humidity
  • No efflorescence
  • Lightweight for superior handling
  • Fast setting, walkable in four hours
  • No sealer required
Related Product(s)
Materials Calculator Determine how much material you need for your project.

Coverage Chart

For 17 lb. box of Prism in ft² (m²) per box

Tile Size Joint Width
Width x Length x Thickness 1/16" (1.6 mm) 1/8" (3 mm) 3/16" (4.8 mm) 1/4" (6.3 mm) 3/8" (9.5 mm) 1/2" (13 mm)
1" x 1" x 1/4" (2.5 x 2.5 x .64 cm) 96 ft² (8.9 m²) 54 ft² (5 m²) 40 ft² (3.7 m²) 33 ft² (3.1 m²) 27 ft² (2.5 m²) 24 ft² (2.2 m²)
2" x 2" x 1/4" (5 x 5 x .64 cm) 181 ft² (16.8 m²) 96 ft² (8.9 m²) 68 ft² (6.3 m²) 54 ft² (5.0 m²) 40 ft² (3.7 m²) 33 ft² (3.1 m²)
3" x 3" x 1/4" (7.6 x 7.6 x .64 cm) 266 ft² (24.7 m²) 138 ft² (12.9 m²) 96 ft² (8.9 m²) 74 ft² (7 m²) 54 ft² (5 m²) 43 ft² (4 m²)
4.25" x 4.25" x 1/4" (10.8 x 10.8 x .64 cm) 372.4 ft² (34.6 m²) 192 ft² (17.8 m²) 131 ft² (12.2 m²) 101 ft² (9.4 m²) 71 ft² (6.6 m²) 56 ft² (5.2 m²)
6" x 6" x 1/4" (15.2 x 15.2 x .64 cm) 521 ft² (48.4 m²) 266 ft² (24.7 m²) 181 ft² (16.8 m²) 139 ft² 12.9 m²) 96 ft² (8.9 m²) 75 ft² (7.0 m²)
8" x 8" x 3/8" (20.3 x 20.3 x 1 cm) 461 ft² (42.8 m²) 234 ft² (21.7 m²) 158 ft² (14.7 m²) 121 ft² (11.2 m²) 83 ft² (7.7 m²) 64 ft² (6 m²)
12" x 12" x 3/8" (30.5 x 30.5 x 1 cm) 688 ft² (63.9 m²) 348 ft² (32.3 m²) 234 ft² (21.7 m²) 177 ft² (16.5 m²) 121 ft² (11.2 m²) 92 ft² (8.6 m²)
16" x 16" x 3/8" (40.6 x 40.6 x 1 cm) 915 ft² (85 m²) 462 ft² (42.8 m²) 310 ft² (28.8 m²) 234 ft² (21.7 m²) 158 ft² (14.7 m²) 121 ft² (11.2 m²)
18" x 18" x 3/8" (45.7 x 45.7 x 1 cm) 1028 ft² (95.5 m²) 518 ft² (48.1 m²) 348 ft² (32.3 m²) 262 ft² (24.4 m²) 177 ft² (16.5 m²) 135 ft² (12.5 m²)
20" x 20" x 3/8" (50.8 x 50.8 x 1 cm) 1142 ft² (106.1 m²) 574 ft² (53.4 m²) 385 ft² (35.8 m²) 291 ft² (27 m²) 196 ft² (18.2 m²) 149 ft² (13.8 m²)
24" x 24" x 3/8" (61 x 61 x 1 cm) 1369 ft² (127.2 m²) 688 ft² (63.9 m²) 461 ft² (42.8 m²) 348 ft² (32.3 m²) 234 ft² (21.7 m²) 177 ft² (16.5 m²)
6" x 24" x 3/8" (15.2 x 61 x 1 cm) 552 ft² (51.3 m²) 279 ft² (26 m²) 189 ft² (17.5 m²) 143 ft² (13.3 m²) 98 ft² (9.1 m²) 75 ft² (7 m²)
12" x 24" x 3/8" (30.5 x 61 x 1 cm) 915 ft² (85 m²) 461 ft² (42.8 m²) 310 ft² (28.8 m²) 234 ft² (21.7 m²) 158 ft² (14.7 m²) 121 ft² (11.2 m²)
6" x 36" x 3/8" (15.2 x 91.4 x 1 cm) 591 ft² (54.9 m²) 299 ft² (27.8 m²) 202 ft² (18.7 m²) 153 ft² (14.2 m²) 104 ft² (9.7 m²) 80 ft² (7.4 m²)
9 x 36" x 3/8" (22.9 x 91.4 x 1 cm) 824 ft² (76.6 m²) 416 ft² (38.6 m²) 279 ft² (26 m²) 211 ft² (19.6 m²) 143 ft² (13.3 m²) 109 ft² (10.2 m²)
12" x 48" x 3/8" (30.5 x 122 x 1 cm) 1096 ft² (101.9 m²) 552 ft² (51.3 m²) 370 ft² (34.4 m²) 279 ft² (26 m²) 189 ft² (17.5 m²) 143 ft² (13.3 m²)

Chart for estimating purposes. Coverage may vary based on installation practices and jobsite conditions. For more tile and joint sizes, use the Material Calculator at CustomBuildingProducts.com or contact CUSTOM Technical Services at 800-282-8786.