Mastic with paver deck??

[Mcow]

I asked this question in my build thread but it got buried and I'd still like to get advice! So I had mastic in my contract but when the pavers were installed room was not left between the coping and the pavers for the mastic. It has since been filled in with the joint sand. Is this an issue? I've looked online and can't really find an answer. My PB seems to be dodging the question or it's just the typical delay in response. It will of course save me money if it's not necessary but want to make sure it won't cause issues. I'm assuming mastic is meant to help with expansion but I've also see others online say it protects the bond beam from water too so that's my main concern.

 

[sham]

I'm curious about this too. Our travertine paver decking does not have mastic between it and the coping, just the polymeric sand that they use between the pavers. The builder said they do the mastic with concrete deck not pavers. It seems fine but now wondering if mastic should have been used.

 

[Mcow]

Yeah and it's weird to me they included it in our contract. Obviously I can get this taken off but I'd rather it be right.