How to fix uneven paving?

[B-B]

Hi there,

I recently moved into a new place and the uneven backyard concrete floor is causing me a lot of issues.

How can I level the floor to ensure there is enough drainage for rain water as I have a seating area/brq spot.

Thanks 

  

[JacobZ]

Hi @B-B,

Welcome to the Bunnings Workshop community, it is fantastic to have you with us.

A perfectly level surface is not really what you want, as water will just sit on it without running off.

If the bulk of the issue is to do with drainage, then the simplest solution would be to add some channel drains to collect and move the water away. You could cut a channel through the concrete using a demolition store and then install the channel drain to carry the water away to a drain. 

Is this a drain here?

If so, then utilising it better is probably the best way to go.

Allow me to tag @Dave-1, @Nailbag and @Noyade to see what they think.

Jacob

[Nailbag]

Hi @B-B 

Marking where the water wants to run off is a great way to start working out the location of the drainage channel systems @JacobZ suggested. The concrete will only be around 90-100mm thick so using one of those Demolition saws is the way to go. However they are very heavy and loud and can be dangerous to use if extra care is not taken. So, if in doubt you could enlist a concrete cutting service to make the cuts and remove the blocks for you.

Nailbag

[Dave-1]

Good Evening @B-B 

I am wondering what the slope of the concrete is at the moment? It looks a little uneven and thats what I think you are wanting to do, as in have it level but sloped away from the house so it still drains?

Im not sure of what you could use to fill the uneveness while keeping the slope,  I have seen companies that inject pressured material under concrete slabs to bring them back into alignment but am unsure of the costs involved.

If you install tiles with mortar under them I fear that the slabs will still move and cracks will show up.

You could go down the track of paving the are with paving sand and then some larger sized pavers. The sand will be more forgiving with movement and easy enough to fix maintence wise every so often with the change in level gets frustrating. I would be careful not to block any weep holes in yoru house wall is all.

Dave