Hi,

Some cowboy builder done a screed on a small conservatory and its like a roller coaster very bad job,
its about 3sqms by 3sqms they done it just before the bad winter last year and has alot of cracks.
My questions are will this crack anymore and would this be ok to lay slc on?

cheers

paul

When you say screed, do you mean a sand and cement screeded floor or an overlay of SLC above a concrete floor ?

a concrete floor which cracked last winter, i want to lay the slc

Any pics ?

there ya goIMAG1058.jpgIMAG1059.jpgIMAG1060.jpg

You sure thats just concrete ? looks like SLC and someone hasnt primed the floor to me ?

will this be ok to level then?

When you tap it does it rattle or sound loose. Its not looking good to me, I cant understand anyone concreting up to Skirting boards ?

should i rip it up then level?

That would be my choice and then I would know its done right.

deal!! thanks for the advice mate much appreciated

defo looks like slc to me, the colour, texture, ripples and the cracks!

Looks like a bad self leveling..

As above looks like slc. rip up, prime and re do it. Laying on it would be asking for trouble in the future

Well i went to rip up the dodgy slc, and guess what an inch think of want look like sand and cement came up aswell,

these nuggets who call themselves builders put this down instead on concrete

its going to cost around 280 for the slc to build it up that high any ideas on building it up

roughy about 30mm?

Marmox boards ??

Floor screed goes on top of concrete...

Originally Posted by whitebeam

Floor screed goes on top of concrete...

what do you mean mate?

Originally Posted by Sir Ramic

Marmox boards ??

how much would that cost for around 8sqms?

Originally Posted by shogun rua

how much would that cost for around 8sqms?

Depends on the thickness but remember the cost will give you insulation as well.
http://www.uheat.co.uk/backerboard.htm

Originally Posted by Sir Ramic

Marmox boards ??

<br><br>how much would that cost for around 8sqms?

30 mm mate

Originally Posted by shogun rua

what do you mean mate?

A 50mm floor screed is laid, or used to be until all the insulation came into regs, on top of the concrete floor..

Originally Posted by whitebeam

A 50mm floor screed is laid, or used to be until all the insulation came into regs, on top of the concrete floor..

well this was around 30mm of crumbling sand and cement poor women

ok thx ill phone them in the morning thx guys

Originally Posted by Sir Ramic

When you tap it does it rattle or sound loose. Its not looking good to me, I cant understand anyone concreting up to Skirting boards ?

outstanding advice

couple of short vids of there handy work

Thats really bad...

aye no wonder people find it hard to trust

Yep i'm with everyone, its an unprimed SLC floor, and needs to go! Make sure you buy a good leveller, not the mud they sell in builders merchants. Mapei renovation screed primed with Primer G takes some beating, Bal Multibase is good too, but can cost more.

was the builder/cowboy informed that the floor was going to be tiled ?? maybe 'not carpet tiles' should have been made clear.

shouldn't an SLC not exceed 10mm to prevent cracking anyway ??