Quantcast

Removing uneven concrete

UKworkshop.co.uk

Help Support UKworkshop.co.uk:

Newbie_Neil

Established Member
Joined
27 Jul 2003
Messages
6,537
Reaction score
0
Location
Nottingham, England
Hi all,

I have just removed a large fire surround and this has left me with some uneven concrete on which I want to lay a new carpet. I've got the worst off, but it is still not good enough to carpet.

It's quite a large area (300 x 5,200) but not all of it requires flattening. I am thinking of hiring an angle grinder for the job. Is this the best way to go?

Thanks,
Neil
 

Jake

Established Member
Joined
5 Apr 2004
Messages
4,908
Reaction score
6
Location
London
Can you not build it up with self levelling compound?
 

cambournepete

Established Member
Joined
29 Mar 2004
Messages
2,710
Reaction score
0
Location
Rangiora, South Island, Aotearoa
An angle grinder would be really, really messy - you'd get dust everywhere in the house, not just the room with the fireplace.
Hammer and chisel (or drill with hammer only action and chisel) would be much cleaner for getting rid of the raised bits.
 

AndyT

Established Member
Joined
24 Jul 2007
Messages
11,829
Reaction score
218
Location
Bristol
Depending on the size of the room and the state of the rest of the floor, might it be possible to put plywood or hardboard over the whole room, once you have chipped off the worst of the bumps? Or maybe the sort of firm-ish fibre underlay sold in sheets for going under floating wooden floors.

And if it's a suspended floor, the hearth may have been supported on a very shallow brick arch in between joists - which might not want to be disturbed too much once its top layer has been removed.
 

Eric The Viking

Established Member
Joined
19 Jan 2010
Messages
6,541
Reaction score
21
Location
Bristle, CUBA (the County that Used to Be Avon)
I'd use an SDS drill with rotation stop (hammer only) and a wide-bladed SDS chisel. They work like mini-Kangos, but are a lot lighter to wield. Very noisy though - wear ear (and eye) protection - but a lot less dusty than a high-speed grinder.

Cheers,

E.

PS: if it's not on the ground floor, as Andy says, you're best off disturbing it as little as possible.
 

monkeybiter

Established Member
Joined
23 Dec 2009
Messages
3,055
Reaction score
2
Location
doncaster
Eric The Viking":2w4bmew0 said:
I'd use an SDS drill with rotation stop (hammer only) and a wide-bladed SDS chisel. They work like mini-Kangos, but are a lot lighter to wield. Very noisy though - wear ear (and eye) protection - but a lot less dusty than a high-speed grinder.
Exactly how I 'flattened' part of my solid kitchen floor. A real PITA to do, but the aftermath is a hundred times better than if you used an angle grinder.
 

Newbie_Neil

Established Member
Joined
27 Jul 2003
Messages
6,537
Reaction score
0
Location
Nottingham, England
Hi all,

Thank you all.

monkeybiter":1md7jgr7 said:
Eric The Viking":1md7jgr7 said:
I'd use an SDS drill with rotation stop (hammer only) and a wide-bladed SDS chisel. They work like mini-Kangos, but are a lot lighter to wield. Very noisy though - wear ear (and eye) protection - but a lot less dusty than a high-speed grinder.
Exactly how I 'flattened' part of my solid kitchen floor. A real PITA to do, but the aftermath is a hundred times better than if you used an angle grinder.
Great, that's the way forward.

Thanks,
Neil
 

Tomyjoiner

Established Member
Joined
25 Jan 2012
Messages
36
Reaction score
0
Location
Cumbria
Definately sounds like a job for self leveling screed, you can trowel up to 15 mm with feb self leveling and its dry in a few hours if it only goes on thin. 1 bag should do that size £11 + vodka an would take all of 10 mins!
 

Hitch

Established Member
Joined
28 Jan 2006
Messages
639
Reaction score
0
Location
Somerset
Handheld concrete planer would give very good results, hire along with an extractor, no where near as dusty as a grinder then.

As with anything like that though, theres going to be some dust.
 

Newbie_Neil

Established Member
Joined
27 Jul 2003
Messages
6,537
Reaction score
0
Location
Nottingham, England
Hi all,

Thank you for all of the suggestions. The SDS and chisel worked a treat and did the job pretty quickly.

Thanks again,
Neil
 
Top