Ceramic and porcelain tile · Hollow-sounding tiles
Why do my floor tiles sound hollow?
Hollow-sounding tiles usually have incomplete mortar contact underneath. Not every hollow sound is a failure, but it can lead to cracking and loose tiles.
Also searched as: "tiles sound hollow when tapped", "drummy tiles", "loose floor tiles"
What usually causes it
- Insufficient mortar coverage
- Mortar skinned over before setting
- Substrate contamination
What you can check yourself
- Tap with a coin and mark hollow tiles
What an independent inspection checks
- Mortar coverage compared with ANSI A108 requirements
- Bond condition
Who is responsible?
Typically installation.
Get your tile floor inspected
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