Lippage is the vertical displacement between the edges of adjacent tiles, and it is a common issue in commercial tile installations. While some minor variation is often permissible under industry standards, excessive lippage creates significant trip hazards and makes the floor difficult to clean, as the protruding edge catches dirt and prevents smooth mop movement. The primary causes of lippage include a substrate that was not properly leveled before installation, the use of large-format tiles that have a natural curve or bow (warpage), or the improper application of mortar. To minimize lippage, installers should perform a pre-installation evaluation of the substrate to ensure it meets flatness requirements. If necessary, a self-leveling underlayment should be applied to correct the floor. The use of large-and-heavy-tile mortar and professional tile-leveling systems can help ensure edges remain flush during the curing process. Since large-format tiles and planks are particularly prone to noticeable lippage, the installation pattern, such as avoiding a 50% offset (brick pattern), is often necessary to reduce the visual impact of natural tile irregularities. Proper workmanship and attention to these details are essential for a safe, high-performing commercial floor.
Key considerations
- commercial tile lippage, uneven porcelain tile edges, large format tile lippage
- tile lippage, commercial tile, large-format tile
- rolling traffic, cleanability, layout accuracy
- edge alignment, leveling systems, controlled offsets