Crowning concrete floor to perfect laminate floor - HELP ME!

[Nicoco5]

Hi

I have done no DIY before in my life!! Please help me!!

I have just bought my first house and realised there was damp that needed treating. THis has been done by a professional who put in a DPC of Silicone about 3 weeks ago. The living room is 3.6 x 3.7m and this is where the problem is! There is no DPM in the very uneven concrete floor and there is a crack down the middle of the room, which makes the floor move as you walk over it! I would love to lay laminate flooring in the front room but I assume I need to be careful of the new DPC?!

Looking at the floor it crowns in the middle, where the crack is, and is uneven in all four corners - more so just under the door! The depth of the uneven-ness is roughly 15mm.

What do I do??

It has been suggested on this website to lay a screed (3:1 Sharp: Cement) and put that down in the corners. I assume this is just in the corners but then do I need to put some kind of leveller over the entire floor??

I am being very blonde but could one of you kind people give me some advice and detailed instructions on what to do??

My dream would be to lay laminate flooring (T&G - moderately priced) on this concrete floor - do you think this is possible from my vague description??

Thank you all for your time - much appreciated!!

Nicki

 

[Johnboy54]

You need to get your floor level before you start with the laminate flooring.
If you've never done this type of DIY before, you're struggling!
The screed you put down will give you a rough level.
Then, you need some self-levelling compound on top.
Problem is, it's not too good at self-levelling!
You still need to float it to a reasonable level.
And, you don't have too long to do it before it goes off.
Then, would your floor level be above the DPC?
Does the floor need lowering first?
And, if you've got a big crack that allows the floor to move? it clearly needs some major surgery.
I think the only thing you can do is get the pro's in.
Sorry.