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Nov 6, 2020 · If an offset more than 33% is desired (such as a 50% offset), the specifier and owner must approve a mock-up and agree to the lippage that may result from this type of pattern being installed. The reason for this is that some tiles have what is called warpage as part of their manufacturing process. Warpage is when the tile is bowed in the middle.
- Tile Size Affects Tile Installation
- What Is Lippage When You Are Installing tile?
- Managing Lippage in Tile: Pay Attention to Offsets!
- Final Advice For Managing Lippage
- How Have Offsets Helped You with Managing Lippage?
Offsets and grout joints are particularly critical when you are installing larger tile sizes and rectangular tile such as a wood plank tile where the length is much greater than the width. Since tile is trending larger, it's important to understand how size affects tile installation so you have a floor that meets your expectations for lippage and t...
According to Wiktionary, lippage is "an uneven surface of a floor that occurs when stone or tiles are not laid to a uniform level." If you look at the image above, notice how some tiles seem higher than others? That's an extreme case of lippage. The tile planks don't form a flat surface. Lippage happens. It's a function of how different in thicknes...
The most effective way for managing lippage - especially when you're installing large format tile as we detailed above - is by paying close attention to how tiles are offset from one another during installation. According to the June 2011 revised Crossville Tile Memo about Pressed Rectangular Tile-Large Format (pdf), "Large rectangular tiles are pr...
Finally, don't ever underestimate the importance of preparing the subfloor and ensuring the substrate is level for reducing noticeable lippage. Be sure to select the right mortar for the specific installation and set the right expectations for lippage given the tile used and the type of offset needed. Here are a few more resources on managing lippa...
Have you encountered a situation where the offset you used in your tile installation helped prevent excessive lippage? What advice would you add to this article? Thanks for reading! Note: This article was originally published on February 25, 2016 and has been updated.
May 3, 2017 · It doesn't have to be exactly 33%, most reccomend no more than 33% to prevent excessive lippage. It all depends if you want a random look, or if you want a pattern to your offset. If it's a wood look tile it will look much better as random. _____
Aug 13, 2019 · “For running bond/brick joint and any offset patterns (i.e., non-continuous grout joints) utilizing tiles (square and/or rectangular) where the side being offset is greater than 15” (nominal dimension), the offset pattern will be a maximum of 33% unless otherwise specified by the tile manufacturer. If an offset greater than 33% is specified ...
- Scott Carothers
- Scott Carothers
- 33% offset recommendations for LFT. ANSI also provides the standards which guide the installation of ceramic tile (which includes porcelain) when the specified tile is 15″ or longer on any one side (popularly known as large-format tile or LFT).
- Straight stack. A tile pattern of square or rectangular tile that has grout joints aligning in both the north/south and east/west directions is known as a straight stack or stack bond.
- The 33% offset reverse. Rather than having the two low points adjacent to the high point as in a 50% offset, the tile in row one is moved to the one third point (33%) of the tile in row two.
- The 33% offset stairstep. In this 33% offset stairstep pattern, rather than switching back and forth as in the 33% reverse, it continues in one direction forming a stairstep appearance.
offsets in excess of 33%, if the tile being used has any edge larger than 18 inches. When considering large tiles and off-sets greater than 33%, consumers are encouraged to consult with manufactur-ers for specific recommendations. For all tile installations, but especially ones with offset patterns, extra precau-
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May 14, 2019 · Industry standards and manufacturer recommendations of 33% or less offset for tiles with one or more sides 15” or greater are required because of the manufacturing process for tile. When ceramic tile is heated and cooled in the kiln, warpage can occur. This is a normal result of the manufacturing process.
