[wrtenterprises]

We are currently working on an irregular flagstone patio that is set in a mortar bed. We are removing all mortar from the joints, and I would like opinions on using poly-sand as a replacement. I've read that some poly-sand is not recommended for this use. Anyone try it? Poly sand seems to work great, but I was wondering what the drawback is in this instance.....

 

[hollywood]

I have used polymeric sand on bluestone, but the pieces were all rectangular or square. Therefore, all of the joints were relatively consistent in width. I would think that with irregular pieces of flagstone using polymeric would still be okay. I am basing this on my observations of how polymeric sand handles and not real field experience. I do not know if polymeric is intended for a certain dimension of a joint or not.

Have you considered stone dust?

 

[wrtenterprises]

Hollywood,

Stone dust, other aggregates, or sand are not acceptable to the customer. I will grout the joints the old fashion way if I have too. The joints average 1" so they are not huge. The previous contractor obviously used lime with his mix, as it's exceptionally hard.....

 

[Peach]

Just finished an irregular bluestone patio using polymeric. I was concerned about the varying joints as a factor to the sand failing. It was important because the path and patio were a front entry.
So far...all is good. (Except for those dang chipmunks..)
Anyway..I'll try to u[load a shot so you can compare.

 

[Sanlorenzo]

Alliance has the best on the market. Polymeric stone dust up to 4 inch joint