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Posted: Sun Aug 23, 2015 9:19 pm
by ladymcd
Hello
We have recently had 100sqm indian sandstone patio layed, when the weather was hot. The slabs were layed on a full mortar bed (relatively dry mix), the backs were not dampened/wet down and they are now sounding very hollow. My question is should we be concerned that they will stay down?
Thank you

Posted: Mon Aug 24, 2015 4:36 am
by lutonlagerlout
hard to say
do they move when you walk on them?
flags laid on a dry mix can sound hollow at times
different people have different mixes and techniques,I prefer a wet mix which never sounds hollow
but the vast majority go with dry mixes
a picture would help
cheers LLL