And how much sand and cement do I need to make enough self leveling
compound for a floor of 235 sq ft?

I'm guessing 4 bags of sand to 1 of cement with half a gallon of PVA
but I really have no idea.

A friend measured all the pieces of string he came across for a while and
the average length was 53.4 cm.

He did not measure balls of string,
skeins of wool,
lengths of rope,
threads,
yarns,
twine.

OG wrote:
A friend measured all the pieces of string he came across for a while
and the average length was 53.4 cm.

He did not measure balls of string,
skeins of wool,
lengths of rope,
threads,
yarns,
twine.

Why knot?

"Clot" wrote in message
news:ZebUn.76555$Hs4.49525@hurricane...
OG wrote:
A friend measured all the pieces of string he came across for a while
and the average length was 53.4 cm.

He did not measure balls of string,
skeins of wool,
lengths of rope,
threads,
yarns,
twine.

Why knot?

Just not re corded

On Jun 22, 10:55*pm, Weatherlawyer wrote:
And how much sand and cement do I need to make enough self leveling
compound for a floor of 235 sq ft?

I'm guessing 4 bags of sand to 1 of cement with half a gallon of PVA
but I really have no idea.

deceide on the thickness, convert to feet, calculate total volume.
Decide your mix ratio and divide total volume into eg 75% and 25%. Go
back next day to get more cos you miscalculated.


NT

On Wed, 23 Jun 2010 00:03:16 +0100, "OG"
wrote:
"Clot" wrote in message
news:ZebUn.76555$Hs4.49525@hurricane...
OG wrote:
A friend measured all the pieces of string he came across for a while
and the average length was 53.4 cm.

He did not measure balls of string,
skeins of wool,
lengths of rope,
threads,
yarns,
twine.

Why knot?

Just not re corded


There are multiple strands to this story.

On Jun 23, 12:22*am, NT wrote:
On Jun 22, 10:55*pm, Weatherlawyer wrote:

And how much sand and cement do I need to make enough self leveling
compound for a floor of 235 sq ft?

I'm guessing 4 bags of sand to 1 of cement with half a gallon of PVA
but I really have no idea.

decide on the thickness, convert to feet, calculate total volume.
Decide your mix ratio and divide total volume into eg 75% and 25%. Go
back next day to get more cos you miscalculated.

You are as dim as the other **** for brains posting to this thread.

Whilst I have to accept the majority of people on here don't know an
awful lot, the idea being they may learn something, I find it
deplorable that your attempt at humour also conveys you have nothing
better to do than reply to a thread you can't add to, stay up late to
do it and show the whole world the level of your ignorance in the
process.

If you ever get tired of being you, you will be a lot older.

"Weatherlawyer" wrote in message
...
And how much sand and cement do I need to make enough self leveling
compound for a floor of 235 sq ft?

I'm guessing 4 bags of sand to 1 of cement with half a gallon of PVA
but I really have no idea.


String length is easy... Works for *all* lengths..........


It is twice as long as half the distance from each end ..

Simples !

On Tue, 22 Jun 2010 23:59:06 +0100, "Clot"
wrote:

OG wrote:
A friend measured all the pieces of string he came across for a while
and the average length was 53.4 cm.

He did not measure balls of string,
skeins of wool,
lengths of rope,
threads,
yarns,
twine.

Why knot?

He got tied up and forgot.

On Jun 23, 9:03 am, John Rumm wrote:

Charmless knob... and you wonder why you don't get constructive answers!
helpful answer snipped

you're being way too generous today John ;))

I would have left him dangling by his own thread...

Cheers
Jim K

Weatherlawyer
wibbled on Wednesday 23 June 2010 04:37

On Jun 23, 12:22 am, NT wrote:
On Jun 22, 10:55 pm, Weatherlawyer wrote:

And how much sand and cement do I need to make enough self leveling
compound for a floor of 235 sq ft?

I'm guessing 4 bags of sand to 1 of cement with half a gallon of PVA
but I really have no idea.

decide on the thickness, convert to feet, calculate total volume.
Decide your mix ratio and divide total volume into eg 75% and 25%. Go
back next day to get more cos you miscalculated.

You are as dim as the other **** for brains posting to this thread.

You get the advice you pay for. Being rude isn't going to persuade those who
do know to be helpful.

Anyway, in the spirit of being helpful:

Forget the sand/cement. You won't be making anything useful with that,
unless you are "levelling" 2" or more depth, which I'd call rescreeding.

It will fall off[1], has no levelling properties whatsoever and will dry out
faster than you can work it.

[1] Unless it is mixed with SBR and a full SBR screeding regime is followed,
(google this group for details, it's been posted a few times). Then you'll
be limited to 10mm min and it still won't self level. But it's useful for
patching deep bits and it won't fall off.

John's suggested latex. But get a good one, some are rubbish.

I'll suggest my favourite which is F Ball Stopgap 300 HD. At 3mm application
I agree with John, you're in the 5-6 bags territory.

You'll need to follow the regime in the data sheet to the letter, which is
mostly about mixing it right and priming the floor with green neoprene
stuff. That buys you one thing over regular latex in that the floor doesn't
then suck the water out of the compound so once it is spread to
approximately the right thickness and has wetted the substrate, the use of a
spiked roller will remove air and assist it in *actually* levelling. Needs
help at 3mm, at 6+ mm it will actually do a "mill pond" for you if you keep
it agitated - one of the few true self levellers.

Google for F Ball - they have an excellent website with excellent data
sheets and vids. York Flooring Supplies sell it on the internet at good
prices.

Your problem will be handling that quantity. You have 25 minutes +/- bugger
all from starting to mix to walking away.

I did 5 bags over a similar area with 2 60l mega buckets, biggest SDS whisk
(which still left the odd lump - plaster mixer is better when I borrowed
one).

3 bags in one bucket in one half of the room, the other 2-3 in the other
bucket. have the guaging water measured in and ready. Have the bags slit and
ready. Do not waste your valuable 25 minutes with any faffing at all. Get at
least one other person to help, you will not do that alone in one hit[2].

Mix bucket 1 for the few minutes required. Mix number 2 similarly.

Remove tools. Tip buckets over in situ.

Scrape out, throw out (assistant now starts hosing them off). You now work
the liquid as fast as you can until everything is wetted, then get to work
with the spiked roller. Do this all over and again until you are at 20
minutes from starting. Now walk backwards rollering your footprints out.

Finish the washing off outside, have a lunch break then in 90 minutes walk
onto and admire your perfect floor

[2] If you are alone, then you'll have to do it in sections, installing a
batten across the room as a dam. Aim to work 2 bags at a time, so probbaly
1/3rds in your case.


HTH

Tim

--
Tim Watts

Managers, politicians and environmentalists: Nature's carbon buffer.

On Wed, 23 Jun 2010 08:49:59 +0100, John Rumm
wrote:

On 23/06/2010 01:06, Bruce wrote:
On Wed, 23 Jun 2010 00:03:16 +0100,
wrote:
wrote in message
news:ZebUn.76555$Hs4.49525@hurricane...
OG wrote:
A friend measured all the pieces of string he came across for a while
and the average length was 53.4 cm.

He did not measure balls of string,
skeins of wool,
lengths of rope,
threads,
yarns,
twine.

Why knot?

Just not re corded


There are multiple strands to this story.

This is going to be one of those threads....


You need to resist with every fibre of your being.

Bruce wrote:
On Wed, 23 Jun 2010 08:49:59 +0100, John Rumm
wrote:

On 23/06/2010 01:06, Bruce wrote:
On Wed, 23 Jun 2010 00:03:16 +0100,
wrote:
wrote in message
news:ZebUn.76555$Hs4.49525@hurricane...
OG wrote:
A friend measured all the pieces of string he came across for a while
and the average length was 53.4 cm.

He did not measure balls of string,
skeins of wool,
lengths of rope,
threads,
yarns,
twine.
Why knot?
Just not re corded

There are multiple strands to this story.
This is going to be one of those threads....


You need to resist with every fibre of your being.

give him enough to hang himself I say.

Weatherlawyer wrote:
On Jun 23, 12:22 am, NT wrote:
On Jun 22, 10:55 pm, Weatherlawyer wrote:

And how much sand and cement do I need to make enough self leveling
compound for a floor of 235 sq ft?

I'm guessing 4 bags of sand to 1 of cement with half a gallon of PVA
but I really have no idea.

decide on the thickness, convert to feet, calculate total volume.
Decide your mix ratio and divide total volume into eg 75% and 25%. Go
back next day to get more cos you miscalculated.

You are as dim as the other **** for brains posting to this thread.

Whilst I have to accept the majority of people on here don't know an
awful lot, the idea being they may learn something, I find it
deplorable that your attempt at humour also conveys you have nothing
better to do than reply to a thread you can't add to, stay up late to
do it and show the whole world the level of your ignorance in the
process.

If you ever get tired of being you, you will be a lot older.

Oh dear, the wrong side of bed? Review your post. It did invite a
lighthearted response in the absence sufficient detail and the title!

"The Natural Philosopher" wrote in message
...
Bruce wrote:
On Wed, 23 Jun 2010 08:49:59 +0100, John Rumm
wrote:

On 23/06/2010 01:06, Bruce wrote:
On Wed, 23 Jun 2010 00:03:16 +0100,
wrote:
wrote in message
news:ZebUn.76555$Hs4.49525@hurricane...
OG wrote:
A friend measured all the pieces of string he came across for a
while
and the average length was 53.4 cm.

He did not measure balls of string,
skeins of wool,
lengths of rope,
threads,
yarns,
twine.
Why knot?
Just not re corded

There are multiple strands to this story.
This is going to be one of those threads....


You need to resist with every fibre of your being.

give him enough to hang himself I say.

Wire you continuing this?

On Jun 23, 9:03*am, John Rumm wrote:
On 23/06/2010 04:37, Weatherlawyer wrote:
On Jun 22, 10:55 pm, *wrote:

How much sand and cement do I need to make enough self leveling
compound for a floor of 235 sq ft?

You are as dim as...

Charmless ****... and you wonder why you don't get constructive answers!

Like this one?
Posted at about the fastet time I was expecting?

Let alone not even providing the basic information like how far out of
level the floor is, and what sort of finish you currently have, so that
one would have at least a chance of estimating the volume required.

Whilst I have to accept the majority of people on here don't know an
awful lot, the idea being they may learn something, I find it
deplorable that your attempt at humour also conveys you have nothing
better to do than reply to a thread you can't add to, stay up late to
do it and show the whole world the level of your ignorance in the
process.

With your posting history, that's ironic really.

For the benefit of anyone else, finishing that sort of area (i.e.
15'x15'6" approx) would typically take 125kg of latex levelling
compound.

That assumes a thickness between 3 to 6 mm over a ribbed
concrete substrate. Any holes deeper than 10mm can be patched first with
levelling compound and sharp sand mix.

If you want to do it with a sand and cement screed then you will need
significantly more since you won't be able to go that thin.

Cheers

Thanks.

I couldn't give a level as the floor was still being stripped. I only
need to do a portion of the original estimate.

In the same spirit:

I am not sure what sharp sand is. I always thought it was broken
stuff, i.e. that which is freshly ground from a quarry -as oppsed to
stuff one might find in the sea or a desert.

The smallest grade used in Britain is brick sand. I imagine that used
in proprietory compounds is much finer dust and consequently requires
more cement and the other additives which I can only imagine the
chemistry of.

I still don't know the optimal requirements for PVA (which is the
additive that gives the finish enough flecibility to withstand
compression over whatever the substrate is.)

I imagine it is quite high. But too much means that furnture is going
to dent it.

OTOH using sand and cement at 4:1 will allow you to put more material
on, provide an hard surface and time to work it. Adding plasticisers
such as feb might weaken it.

Detergents certainly do.
It might be an idea to add this dicussion to the wiki if it isn't
already there. I couldn't find anything on it, though at midnight
after a long day, I wasn't looking too carefully.

(It never occurred to me for example to just search the great, fat
connection.)

Weatherlawyer wrote:

On Jun 23, 12:22 am, NT wrote:
On Jun 22, 10:55 pm, Weatherlawyer wrote:

And how much sand and cement do I need to make enough self leveling
compound for a floor of 235 sq ft?

decide on the thickness, convert to feet, calculate total volume.
Decide your mix ratio and divide total volume into eg 75% and 25%. Go
back next day to get more cos you miscalculated.

You are as dim as the other **** for brains posting to this thread.

Whilst I have to accept the majority of people on here don't know an
awful lot, the idea being they may learn something, I find it
deplorable that your attempt at humour also conveys you have nothing
better to do than reply to a thread you can't add to,

No, you are the '**** for brains'.
How can anyone give an answer if you have only given an area size.
The answer given was correct, 'go and decide on your thickness'. Though
maybe he meant how thick YOU are, rather then the thickness of the
floor.
Alan.

--
To reply by e-mail, change the ' + ' to 'plus'.

On 24 June, 07:52, Weatherlawyer wrote:
snip pompous ****e

go on ask us another! - this is fun ;))))

Jim K

Jim K wrote:
On 24 June, 07:52, Weatherlawyer wrote:
snip pompous ****e

go on ask us another! - this is fun ;))))

Did you have to? I spilt my coffee.