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- 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.
- 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.
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.
Jul 30, 2012 · By moving the intersection of the two ends of the tiles to the 33% location from the 50% location, the lippage is significantly reduced and most times provides an acceptable appearance. Many tile manufacturers now recommend that their products be installed with the 33% offset which further supports tile mechanic’s need to install a tile ...
Jan 18, 2019 · For my 12” x 24” tiles, the center of the 24” axis is higher than the edges. This means a 50% offset matches that high point in the center with the low point on the edges: Example side image of the issue. This “high point matching with the low point” results in something called tile lippage which is where tiles are not
Aug 13, 2019 · While this pattern can be very attractive, it can also be frustrating when the inherent warpage on the long side of the tile causes lippage. This lippage issue many times leaves the installer with a difficult, if not impossible, task when a 50% offset with a credit card or 1/32” grout joint is specified.
People also ask
What if a tile offset is more than 33%?
Is a 50% offset tile causing lippage?
Why do large tiles have a higher lippage than other tiles?
Why is my tile lippage so bad?
Is lippage a problem with ceramic tiles?
How much offset should a tile have?
The tile industry has determined that large tiles laid in running bond, i.e. 50% offset, may result in increased lippage caused from the inherent warpage of the tile and the bonding pattern’s alignment of a tile’s high edge with the low edge of an adjacent tile. This potential for excessive large format tile lippage may be mitigated by ...
