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-   -   Placing pavers over existing concrete patio (http://www.diychatroom.com/f16/placing-pavers-over-existing-concrete-patio-70989/)

k1080 05-11-2010 01:24 PM

Placing pavers over existing concrete patio
 
Do I need to use mortar, or can I use only sand to redo my concrete patio? Also, we do have some cracks in the cement should they be repaired first?

GardenConcepts 05-11-2010 05:01 PM

You can epoxy the pavers to the perimeter of the concrete slab and use sand for the field. I've done this using 2 3/8" thick pavers for the field and 3 1/8" thick pavers for the perimeter. Your sand bed is the difference between the two thicknesses.

I would at least use a concrete caulk to fill the cracks.

k1080 05-12-2010 06:03 AM

Patio Pavers
 
Thank you very much for your information. This will be a fall project, as it is too hot now to do it. I will post photos.

Bushman 05-12-2010 04:22 PM

Hey Garden,
Do they need to drill holes for drainage?
I would be afraid that the glued perimeter would hold the water in like a basin on the concrete slab.
Especially during a heavy rain.
Just curious is all. I have no experience with pavers over concrete. It would save a ton of work though.

GardenConcepts 05-12-2010 06:55 PM

Never had a problem with water- heavy rain will flow over top of the pavers. The epoxy only sits on the bottom of the perimeter course. I have one install from 6-7 years ago that is still good.

Allison1888 05-12-2010 11:15 PM

Yes, please post pics. We don't always get to see the finished product.

jomama45 05-12-2010 11:22 PM

Quote:

Originally Posted by GardenConcepts (Post 441129)
Never had a problem with water- heavy rain will flow over top of the pavers. The epoxy only sits on the bottom of the perimeter course. I have one install from 6-7 years ago that is still good.


I'd agree with this as well. Although it may not seem ideal in theory, it seems to work very well in practice. I've done quite a few installations similar to this, but with a flexible adhesive on the perimeter vs. epoxy. All have held up well to the harsch winters we commonly see here. I've even dry-laid the brick infill before w/o issue, but I always use polymeric sand.

I should state though that I only do this on new concrete bases that I have installed myself, as I'm not willing to gamble on top of existing failing concrete that I dn't have any insight on.

MajesticPaving 08-12-2010 07:11 PM

Majestic Interlock Paving
 
If the overall quality of the concrete patio is still good, then there should be no problem using sand to fill in the middle of the paver area, polymeric sand to be exact. However, I don't have pics of your existing patio to make that judgement call for you.


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