Paving Stones over Concrete

 I am planning on redoing my whole front yard, new grass, new walkway, and
new driveway.  I want to get rid of the fugly concrete driveway and walkway,
replacing it with shaped paving stones, like the kind that interlock.

I'm going to tear out the existing walkway and place a new one one a
different path.

For the driveway, I want paving stones, but if I can save myself a whole lot
of work, I will.

I'd like to place the stones over the driveway, cutting out only a little of
the concrete where it meets the sidewalk so it will slope down.  I also want
to raise everything a couple inches, which will make some of the other
projects I have planned a little easier.

Is there a problem with this?  I was thinking of cementing or otherwise
attaching the paving stones to the slab.  It's about 8' wide and 30' long.

Thanks!

CS

 
Paving stones are usually just set down on a sand base and then either
sand of stone dust is brushed over.  Beneath the sand layer you need
a stabilized base.  That could be just the existing ground material,
if
it's just gravel and firm enough.  If it's soft soil, then it needs to
be removed
down far enough to get to firm material, then suitable material added
and compacted, prior to putting the sand down.

If the concrete you have is stable, then it could be OK from a support
standpoint as the base and you could go with the sand on top.
   However, the concern
I would have is drainage. If the concrete is slab is intact, water
won't
be able to drain out effectively and it could be a problem with freeze/
thaw
cycles.

 wrote in message
<snip>
Paving stones are usually just set down on a sand base and then either
sand of stone dust is brushed over.  Beneath the sand layer you need
a stabilized base.  That could be just the existing ground material,
if
it's just gravel and firm enough.  If it's soft soil, then it needs to
be removed
down far enough to get to firm material, then suitable material added
and compacted, prior to putting the sand down.

If the concrete you have is stable, then it could be OK from a support
standpoint as the base and you could go with the sand on top.
   However, the concern
I would have is drainage. If the concrete is slab is intact, water
won't
be able to drain out effectively and it could be a problem with freeze/
thaw
cycles.

~~~~~~~~~~~~~

I'm near Los Angeles, so freeze/thaw cycles aren't a problem.

What would be the best way to attach them to the concrete?  Or, should I
just lay them down and install solid borders to keep them from moving?

Thanks!

CS

 
Per my earlier post, pavers are not typically attached to anything.
They are set on a sand base, which is put down on a firm
sub-base of somekind.  In your case, the concrete would be the base.

  Even with no freeze thaw cycles
I'd consider where rain water is going to go.  If the driveway is
pitched and you do it right, should not be an issue.  But if you
have any low spot, with solid concrete underneath, water would
have no place to go and could take a while for it to evaporate.
That's the only issue that would be different about your install
vs any other paver install.

 
'trader4@optonline.net[_2_ Wrote:

bed with sharp sand then there is every chance weeds will fill the
voids. Ideally you need to dig down 200mm (8") Lay 100mm hardcore and
compact with a whacker plate. Then spread the sharp sand. The sand will
need to be approx 10mm above the required level ninus the thicknes of
the slab. You will need to whack so you can walk on it without leaving
foot prints. Once you have completed this stage you can lay your slabs.
Using a very light rake fluff the very top of the sand, this will allow
you to rubber mallet the slabs to their required level. Honestly this is
the only true solution. Remember you get what you paid for where labour
is also cost.




--
Robby1