Once a large-format tile is installed, you only see the beautiful finished surface. What you don't see is equally important: the adhesive coverage underneath it.
Why Are Voids a Bigger Concern?
As tile dimensions increase, achieving consistent contact between the tile, adhesive and substrate becomes more challenging.
If the adhesive is distributed unevenly, air pockets or unsupported areas can remain beneath the tile.
Professional large-format tile guidance warns that insufficient adhesive coverage can contribute to poor bonding and tile damage.
The Notched Trowel Has a Job
Adhesive should not simply be spread randomly across the floor. Using an appropriate notched trowel helps distribute the adhesive evenly and creates consistent adhesive ribs.
For large tiles, installers may also use adhesive on the rear of the tile where required to improve overall contact. Industry guidance commonly recommends this double-application approach for large-format installations where fuller coverage is required.
Check Before Moving Ahead
Good installers don't assume that coverage is correct.
During installation, periodically checking a lifted tile can help confirm whether proper adhesive transfer and contact are being achieved.
Because with large-format tiles, the final finish depends on more than what you can see.
It depends on:
A prepared surface. The right adhesive. Proper application. Maximum possible contact.
Get these fundamentals right, and large-format tiles can deliver the clean, premium finish they are designed for.
Large tiles make a big statement. Make sure the installation behind them is equally strong.
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