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well spent 10 hours chiseling out the old cement joints between these massive blue stones at my house today and had a couple questions for you guys


1) The sub floor these stones are on is almost a sandy/fine gravel cement mix of some sort and there is a weeping tile system around the patio But my question is will it be ok? i had ACL surgery a few months ago and the last thing i want to do is lift these monsters and pour a new slab

2) what Brand or kind of cement will hold up the longest? i picked up a few bags of some motor/cement mix but idk if its the rite one to use


Oh also do i need a expansion joint along the patio slab or just use tar paper?


any help would be great guys!!!! thanks again:thumbsup:
 

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well spent 10 hours chiseling out the old cement joints between these massive blue stones at my house today and had a couple questions for you guys


1) The sub floor these stones are on is almost a sandy/fine gravel cement mix of some sort and there is a weeping tile system around the patio But my question is will it be ok? i had ACL surgery a few months ago and the last thing i want to do is lift these monsters and pour a new slab

2) what Brand or kind of cement will hold up the longest? i picked up a few bags of some motor/cement mix but idk if its the rite one to use


Oh also do i need a expansion joint along the patio slab or just use tar paper?


any help would be great guys!!!! thanks again:thumbsup:


Sounds like the proper base is there,why not use polymeric sand insted of mortar,and no you don't need expansion joint or tarpaper.
 

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Both mortared joints or polymeric sanded joints will require some maintenance though the years, but the poly is far easier, and DIY friendly, to repair..........

The only way to ensure a long lifespan out of mortared joints is if the bluestone were to be wet-set over a rigid foundation, like a re-enforced concrete slab......
 
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