Grout by tile material
Tile material changes the grout decision more than most people expect. Polished stone and glass scratch, porous clay and cement tile stain, handmade tile needs wide forgiving joints, and dense porcelain slows curing and makes haze stubborn.
Each guide covers compatible grout types, joint widths, protection steps before grouting, cleanup and long-term care for that material.
Ceramic and porcelain
Best Grout for Porcelain Tile: Types, Joint Widths and Pitfalls
How porcelain's near-zero absorption changes grout choice, curing and cleanup, with picks for glazed, polished, matte and large-format tile.
Grout for Ceramic Tile: Wall vs Floor Tile, Edges and Joint Width
How ceramic body, glaze and pressed or cushion edges decide joint width, sanded vs unsanded grout, finishing depth and cleanup.
Grout for Subway Tile: Joint Width, Color and Grout Type
Joint width, grout type and color strategy for subway tile, with the edge profile and layout details that decide how the finished wall looks.
Grout for Large Format Tile: Joint Width, Lippage and Cracking
Joint width, grout selection and movement planning for tile with any side 15 inches or longer, and why its grout lines crack when they do.
Grout for Wood-Look Tile: Joint Width, Color and Plank Layout
How to size, color and lay out grout joints on wood-look porcelain planks so the floor reads as wood instead of a tile grid.
Natural stone
Grout for Natural Stone: Marble, Travertine, Slate and Granite
How stone chemistry, porosity and finish dictate grout type, color, sealing and cleanup, stone by stone.
Grout for Marble Tile: Avoid Scratches, Stains and Etching
Grout selection and technique for marble: scratch risk, color against veining, moisture staining in white marble, grout release and acid-free cleanup.
Grout for Travertine: Filled, Unfilled and Tumbled Tile
Grouting travertine by finish: filled vs unfilled vs tumbled, filling holes with grout, color matching, pre-sealing and acid-safe cleaning.
Grout for Slate Tile: Grout Release, Wide Joints and Cleanup
How cleft slate changes grouting: pre-sealing, joint width for gauged and ungauged tile, grout type and color, and getting grout off a rough face.
Grout for Granite Tile: Polished, Flamed and Resin-Filled Stone
Granite grouting by finish and porosity: tight joints on polished tile, cleanup on flamed stone, resin-filled surfaces and preventing pigment shadows.
Grout for Pebble Tile: How Much, How Deep and How to Clean It
Pebble tile uses far more grout than flat tile and is shaped with a sponge. Volume, depth, grout type, shower floors, sealing and cleanup timing.
Glass, mosaic and specialty tile
Best Grout for Glass Tile: Avoid Scratches, Haze and Cracking
Why glass tile needs non-scratching grout, careful color choice and extra movement allowance, with picks by glass type and location.
Grout for Mosaic Tile: Type, Color and Technique for Small Tile
Why small tile turns grout into a main design and performance element, and how to choose and install grout for sheet-mounted mosaics.
Grout for Cement Tile: Sealing First, Color and Cleanup
Encaustic cement tile soaks up grout pigment and is etched by acids, so it needs sealing first, light grout and gentle neutral cleanup.
Grout for Quarry Tile: Joint Width, Epoxy, Furan and Sealing
Grout choices and techniques for thick, extruded quarry tile, from residential sanded grout to epoxy and furan in commercial kitchens.
Grout for Saltillo and Terracotta Tile: Seal First, Wide Joints
How to grout highly porous unglazed clay tile: pre-sealing, wide sanded joints, grout bag placement and the staining and haze traps to avoid.
Grout for Handmade and Zellige Tile: Joints, Types and Sealing
Grouting irregular handmade and zellige tile without staining the clay or trapping haze in the glaze, with joint and grout type guidance.
Explore other guides
Grout Basics
What grout is, what it does, what it cannot do, how long it lasts and how to handle it safely.
Grout Science
The chemistry and physics behind curing, shrinkage, color, porosity and strength.
Grout Types
Every grout family, the standards behind them and how to choose the right one.
Comparisons
Head-to-head matchups with side-by-side tables and a clear recommendation.
Joint Width and Layout
How wide and deep grout joints should be, and where grout must stop for movement joints.
Grout by Location
Where the tile lives changes the right grout: wet, hot, outdoor, submerged or commercial.
How to Grout
Mixing, floating, sponging, haze removal and curing, done the way pros do it.
Grout Problems
Symptom-first diagnosis: what you see, what causes it and how to fix it.
Repair and Regrouting
Patch, remove and regrout correctly, and know when the problem is below the grout.
Cleaning and Stains
Safe cleaning methods, the right chemistry for each soil, and stain-by-stain fixes.
Sealing Grout
Which grouts need sealing, which sealer to use, how to apply it and how to test it.
Grout Tools
Calculators and interactive tools for planning, buying and troubleshooting grout.
Research and Data
Original reference tables and analysis computed from first principles.