Hollow out door porcelain tile, no movement

[Oxdale]

Hi

i had an out door porcelain patio laid 2 months ago. A couple of the slabs sound hollow - not when you walk on it but when you give it a knock with your fist. There is no movement and it all seems fine. Should I be concerned?

[nod]

NO

[Nickfromwales]

If the grouting is all good, and water can't get in, then I'd not worry unless it's over 50% of a fitted tile.

 

Porcelain is very hardy, so you should be fine with some hollow 'voids'.