Hi

I have a concrete floor in the kitchen and I need to build up the height
by 12mm. Levelling compunds seem to have a max thickness of 3mm (well
Wickes does anyway), while ordinary floor screeds seem to be a min
thickness of 25mm, or more.

Whats the best way to increase a concrete floor by 12 mm?

Cheers
Richard

richard wrote:
Hi

I have a concrete floor in the kitchen and I need to build up the height
by 12mm. Levelling compunds seem to have a max thickness of 3mm (well
Wickes does anyway), while ordinary floor screeds seem to be a min
thickness of 25mm, or more.

Whats the best way to increase a concrete floor by 12 mm?

Cheers
Richard

12mm WBP Ply ?



RT

richard wrote:

Hi

I have a concrete floor in the kitchen and I need to build up the height
by 12mm. Levelling compunds seem to have a max thickness of 3mm (well
Wickes does anyway), while ordinary floor screeds seem to be a min
thickness of 25mm, or more.


I think you will find that levveling comnpunsds are 3mm MINIMUM not MAXIUMUM


Screed may be a little weak for 12mm, but a sterner mix with more cement
may serve you well.

ceratinly tile cement will work. But cheap it aint.

I'd go for a mixture of 3:1 sand, cement and throw some PVA in and mix
it fairly wet, and puddle it flat before polishing.

Try a test area first to make sure it sticks. If the surface is dusty,
PVA it first.


Whats the best way to increase a concrete floor by 12 mm?

Cheers
Richard

On Tue, 24 May 2005 14:10:39 +0100, The Natural Philosopher wrote:

richard wrote:

Hi

I have a concrete floor in the kitchen and I need to build up the height
by 12mm. Levelling compunds seem to have a max thickness of 3mm (well
Wickes does anyway), while ordinary floor screeds seem to be a min
thickness of 25mm, or more.


I think you will find that levveling comnpunsds are 3mm MINIMUM not MAXIUMUM


Screed may be a little weak for 12mm, but a sterner mix with more cement
may serve you well.

ceratinly tile cement will work. But cheap it aint.

I'd go for a mixture of 3:1 sand, cement and throw some PVA in and mix
it fairly wet, and puddle it flat before polishing.

Try a test area first to make sure it sticks. If the surface is dusty,
PVA it first.


Whats the best way to increase a concrete floor by 12 mm?

Cheers
Richard

Thanks for the reply, much appricaiated. When ypu say wet - how wet do you
mean - like mortar? Also how long do you think that 12 mm will take to dry
enough to lay tiles?

Thanks for your help

richard wrote:

On Tue, 24 May 2005 14:10:39 +0100, The Natural Philosopher wrote:


richard wrote:


Hi

I have a concrete floor in the kitchen and I need to build up the height
by 12mm. Levelling compunds seem to have a max thickness of 3mm (well
Wickes does anyway), while ordinary floor screeds seem to be a min
thickness of 25mm, or more.


I think you will find that levveling comnpunsds are 3mm MINIMUM not MAXIUMUM


Screed may be a little weak for 12mm, but a sterner mix with more cement
may serve you well.

ceratinly tile cement will work. But cheap it aint.

I'd go for a mixture of 3:1 sand, cement and throw some PVA in and mix
it fairly wet, and puddle it flat before polishing.

Try a test area first to make sure it sticks. If the surface is dusty,
PVA it first.



Whats the best way to increase a concrete floor by 12 mm?

Cheers
Richard


Thanks for the reply, much appricaiated. When ypu say wet - how wet do you
mean - like mortar?

Or even sloppier to help it run. Builders sand rather than sharp sand
helps as well.

Also how long do you think that 12 mm will take to dry
enough to lay tiles?

It will set enough to lay tiles on in about 24 hours in summer. I'd
leave it 48 hours though. - you will need a break.

It is debateable as to whether a quick setting tile cement and a level
and some string is easier to build a level floor 12mm above the screed
rather than trying to level in one go.

I certainly did this myself - up to 30mm of tile cement in some places.
Cost a lot in cement, but its flat.

Basically build a grid of string over the floor at finshed height, and
use more or less thickish RAPID DRYING cement to tamp each tile down to
the grid level. Start in the middle.

Do NOT use slow set - tiles will slump before the cement dries - and mix
its really STIFF. This is non trivial and only practice makes perfect.



Thanks for your help

In message , The
Natural Philosopher writes

It is debateable as to whether a quick setting tile cement and a level
and some string is easier to build a level floor 12mm above the screed
rather than trying to level in one go.

I certainly did this myself - up to 30mm of tile cement in some places.
Cost a lot in cement, but its flat.

Basically build a grid of string over the floor at finshed height, and
use more or less thickish RAPID DRYING cement to tamp each tile down to
the grid level. Start in the middle.

Do NOT use slow set - tiles will slump before the cement dries - and
mix its really STIFF. This is non trivial and only practice makes
perfect.

Has anyone tried doing this sort of thing with a laser level?

regards

--
Tim Lamb

Tim Lamb wrote:

In message , The
Natural Philosopher writes

It is debateable as to whether a quick setting tile cement and a level
and some string is easier to build a level floor 12mm above the screed
rather than trying to level in one go.

I certainly did this myself - up to 30mm of tile cement in some
places. Cost a lot in cement, but its flat.

Basically build a grid of string over the floor at finshed height, and
use more or less thickish RAPID DRYING cement to tamp each tile down
to the grid level. Start in the middle.

Do NOT use slow set - tiles will slump before the cement dries - and
mix its really STIFF. This is non trivial and only practice makes
perfect.


Has anyone tried doing this sort of thing with a laser level?

I think the string is easier, but use teh level to get the string right
first off..
regards