Grinding a concrete slab

[pantotango]

We had our floors ground back by a concrete cutter. He has a machine that shaves off the top..Not sure how much it would cost as we used our neighbour who we swapped favours with and it was only the lounge that we had done. Very very very messy but worth calling someone and seeing if they can do it for you.

[Jill]

vGolfer - I found this site for you - not sure if it will be any help or not, though - bretts.com.au/sound-proof-fence/TQL18TimberFloorsOverConcreteSlabs.pdf.

Cheers,

Jill

[ausdesign]

I wouldn't give any thought to cutting into the slab unless you've got a nice bank manager to pay for the litigation in the years to come.
The slab will have been designed with [in 99% of cases] 100mm thickness, a set thickness [depth] of edge and internal beams and a requirement under AS2870 - residential slabs & footings - for a minimum of top cover of concrete to the reo.

[vGolfer]

Hey thanks everyone. I didn't get an email notifying me there had been responses!

I chipped away some of the tiles on the slab...seems like there is a bed of mortar that is at least 10mm so getting rid of that will help.

I think we may try and lift the floor height in the whole house say 20mm...hopefully that would be enough to have it flush with the slab. Once all the tiles are up and the bare slab exposed, I'll get a laser level and see how much I have got to play with.

The whole idea of doing anything to the slab i sseeming more and more unwise!

[Jamster]

It sounds like you have a tile bed on top of your slab. Run a 9 inch grinder vertically in a grid pattern to the required depth(so it looks like a block of chocolate) then chisel out with small jackhammer, reinstate with a thin screed of sand and cement . There will be tons of dust !!!
. DONT INTERFERE WITH YOUR SLAB!!!!
Jamster