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Old 08-24-2006, 09:52 AM   #1
azsun1411
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Join Date: Aug 2006
Posts: 25
Question paving a walkway with coblestone

Have a 30 ft long, 5 ft wide concrete walkway, to a gazebo. I want to put down a type of coble stone (cement based). I need to raise the walkway 4 inches, which includes thickness of coblestones (they are about 2 to 2-1/2 inches thick).

Will the following work:
1) Clean existing walkway real good.
2) Put down a thinset (picked this up from this site). I think I've seen
some kind of bonding agent, at HD or Lowe's, to put on old concrete
before putting down new concrete. Is that better?
3) After thinset, put down about 2 inches of concrete, over old walkway
before placing coblestones, so total thickness is 4 inches.
4) Finally, put down a final layer of thinset and set coblestones.

The coblestones are supposed to fit close together and I had someone tell me to lay them in sand. I don't want to do that. When it is all done I'll have an 8 inch thick walkway. Oh well!

Wondering too, if rain could cause any damage to walkway (ie, thinset deterioration, etc.)? The coble stones won't be mortared together and
rain would get in between. Of course, Phoenix area isn't Seattle.

Appreciate the help. Got a lot of projects in mind with weather changing,and only limited knowledge. Asking alot of questions, is like the old addage,
"measure four thousand times and cut once"!
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