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Posted: Fri Aug 07, 2015 11:40 pm
by lana
Hi Helpful Folks,
Just wondering if somebody might give me an idea based on their expertise.
After a series of renovation projects from different times I ended up with the "patchwork" of the multiple coloured concrete/slabs/others mix:
the area is under the back garden gate: blue-grey granite slabs of the patio from inside, three colours of concrete of different age from outside. Looks funny, if not silly, doesn't it? Is there any easy way to "screed" over the outside area or even - paint it over, so that at least, it'll be just two colours meeting under the gate?
Any thoughts, please?
thanks a lot in advance!
Lana
Posted: Sat Aug 08, 2015 8:03 am
by seanandruby
Hi again Lara.
yes you can overlay using a thin bed of grano.
you'll need to powerwash the area and fill any voids first.
there are other materials on the market but they are very expensive, grano being the cheapest fix of all.
look here
Posted: Sun Aug 09, 2015 12:53 am
by lana
Sean, thanks you very much! I've got one more question though: it says on Tony's pages the thickness should be no less then 20mm...well, all coloured patches in my case meet at the same level. there is no doorstep or drop between them. This was made to accommodate the need for wheelchair to get through...so if I'm to put grano mix, that will create a gap of 20mm which is undesirable...or should I just be able to smooth the grano mix down towards the edge?
thanks in advance!
Lana
Posted: Sun Aug 09, 2015 7:41 am
by seanandruby
How thin is it going to be? Try and aim for 20 ml but if it is slightly less in the parts you.mention don't worry to much. Remember it is 6ml to dust so anything to sparse will make it difficult to finish and will look boney. It is really hard stuff to mix, especially in a mixer because it 'balls' and then doesn't mix propererly. Remember to clean the existing, scabble it and fill in the low spots.
Posted: Sun Aug 09, 2015 12:45 pm
by lutonlagerlout
TBH I would either paint it or cut a rectangle with the cut off saw and put a 100mm of fresh concrete in there
painting it being the easiest option
LLL
Posted: Sun Aug 09, 2015 2:03 pm
by mickg
I concur with Tony, to add a thin layer of grano is a failure, needs cutting out and making into one area with a minimum depth of 100mm
Posted: Sun Aug 09, 2015 2:20 pm
by seanandruby
I've never had a grano overlay fail. It just needs to be done right. Think the existing is to rough to give a nice looking paint finish. The breaking out and concreting is an option replacing concrete with concrete ??? Might as well go for the same slabs.
Posted: Sun Aug 09, 2015 10:47 pm
by lana
thanks guys! I'm not too comfortable about cutting out (never done one, don't have tool) I think, if I'd hire a tool and try, I might spoil it even more :-/ Painting looks the easiest option, I can even be creative and paint something like "welcome" mat 
but where do I get the paint that survives outdoors?