Tile Glossary | Tile Terms, Materials & Installation Definitions – Apollo Tile

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A

Abrasion resistance

Abrasion resistance refers to a material’s ability to withstand surface wear caused by friction, foot traffic, cleaning, or repeated contact over time. In tiles and flooring, higher abrasion resistance helps maintain appearance and durability, especially in high-traffic residential, commercial, and outdoor environments.

Absorption rate

Absorption rate refers to the amount of water a material absorbs relative to its weight. In tiles, it indicates density and porosity, influencing durability, stain resistance, and suitability for indoor, outdoor, or wet-area applications such as bathrooms and kitchens.

Anti-Slip

Anti-slip refers to a surface’s ability to reduce the risk of slipping by providing enhanced traction. Anti-slip tiles are designed for wet or high-risk areas such as bathrooms, kitchens, pools, and outdoor spaces, helping improve safety without compromising durability.

B

Back Buttering

Back buttering is a tile installation technique where adhesive or mortar is applied to the back of the tile in addition to the substrate. This method improves bonding strength, ensures better coverage, and helps prevent voids, especially when installing large-format or uneven tiles.

Backer Board

Backer board is a rigid, moisture-resistant panel used as a stable substrate for tile installations. Commonly made from cement, fiber-cement, or foam, it provides structural support, prevents movement, and helps protect tile surfaces from moisture-related damage.

Backsplash

A backsplash is a protective surface installed behind sinks, countertops, or cooking areas to shield walls from moisture, stains, and splashes. Often made from tile, it also serves as a decorative element that enhances the style and visual appeal of kitchens and bathrooms.

Bed Thickness

Bed thickness refers to the depth of mortar or adhesive applied beneath a tile during installation. Proper bed thickness ensures adequate bonding, surface leveling, and load distribution, helping prevent tile movement, cracking, or uneven surfaces over time.

Bending Strength

Bending strength refers to a material’s ability to resist breaking or cracking when subjected to flexural stress. In tiles, higher bending strength indicates better durability and performance under load, impact, or minor substrate movement.

U

Unglazed Tile

Unglazed tile is a type of ceramic or porcelain tile without a surface glaze. Its color and texture run through the entire body, making it highly durable, slip-resistant, and less prone to visible wear. It is commonly used in high-traffic, commercial, and outdoor applications.

Unsanded Grout

Unsanded grout is a smooth grout mixture without added sand, designed for narrow grout joints typically 1/8 inch or less. It is commonly used with polished tile, glass, and delicate surfaces, where sanded grout could cause scratching or surface damage.