[mrusk]

I am starting a 2300 sq ft ep henry blue stone job this week. 1800 sq ft is concrete over lay. I will be screeding the concrete sand right on top of the concrete.

I am installing bull nose copping around the pool with adhesive and having the blue stone go right up against it. I need to know how much higher i should plan on screeding the sand, so once i hit it with the mallet/ walk on it etc it is at the right height.

The height difference between the bullnose paver and the blue stone slab is 1/2 inch, so there will not be a whole lot of sand down. I know with pavers to add an extra 3/8s, but with pavers you run the plate over them.

What do you think? And yea, the concrete is 10 years old with no cracks and in great shape. I am hoping this job goes smoothly, and i imagine it will since it is pretty straight foward.

Matt

[skahuna]

I laid a large tennyson patio when it first came out. how much it settles depends on how big the piece is the 12 x 12 will settle a lot more than the 24 x 24 . i would scree out a small area and play with the heights
If i was going to do another one I would do it on tamped screenings instead of sand

[mrusk]

So your saying to use stone dust and run the compactor over it? Remember, my job is on top of concrete.

Matt

[Stonehenge]

If you're only putting down 1/2" of sand, it's going to depend how wet the sand is - dry sand is going to flow well and not compact much, wet sand will stay a little clumpy and likely leave a little room for settling. But I wouldn't guess it'd be more than 1/8"-1/4".

[skahuna]

If i was going to do a normal install ( over modified ) I would lay them on tamped screenigs not sand to minimize the different amounts of settling. In your case that wouldnt work so i would scree out a small area and see how much they tap in . Try a 1/4 in. high Its always easier to bring the edge down than the field up