Can you put outdoor porcelain tiles over existing outdoor concrete

[zuber ali]

Hi all as per the title. Looking to put down some porcelain tiles in the front garden, the builder who can said the existing concrete doesn't need to be removed and they can place directly on top.

Is this correct?

I always thought the concrete needs to be removed and hardcore putdown,

 

[matlob]

Yes, porcelain can laid on top of concrete with outdoor tile adhesive no problem

 

[Mike13]

If the concrete is flat and stable, why not just use it?

 

[zuber ali]

If the concrete is flat and stable, why not just use it?

@Mike13 I'm not sure if it will cause it to be higher than the DPC level, I can't tell whete the dpc is

 

[Mike13]

well that is a separate issue you need resolve, it only needs enough thickness of adhesive to take up any unevenness in the concrete. try and have a close look at the walls to look for a course that is a slightly different thickness to the ones above or below it, that might be it.

 

[robinbanks]

I always thought the concrete needs to be removed and hardcore putdown,

Ask yourself, what's the fundamental difference between concrete and hardcore anyway?

 

[Nintendofan]

Ask yourself, what's the fundamental difference between concrete and hardcore anyway?

permeability?

 

[Mike13]

permeability?

but then you are putting impermeable porcelain on top...

 

[Nintendofan]

but then you are putting impermeable porcelain on top...

With a gap inbetween, use a brush in resin and you can get a permeable joint to aid drainage.