SLC how deep can you go

[postie]

Just had a look at a floor and it looks a right mare ,where they have laid the screed the floor slopes down towards the end by about an inch .I was going to pour SLC and try to level as best as poss as the floor generally looks to be poorly laid and uneven all over my instints tell me to leave this well alone but the otherside of me things it will be one hell of a test and vital experince for me as i have yet to tackle SLC . So how deep can you go,is it ok to do it in stages say lay 12mm let it set then lay more SLC on top, also any tips on tackling uneven floors when tiling regards Edd.

[CJ]

Bal multibase can go up to 5mm on its own

or with the addition of granite chippings........up to 20mm

[pjc]

try this link it may help Pete

http://www.pci-uk.com/PCIUK/En/products/screedslevellingcompoundsrepairmortarts/Screeds+and+Levelling+Compounds/default.htm

[Leatherface]

Easy peasy !!!

First you need to find how much the floor differs from highest to lowest point at the perimiter of the floor - the basic principle of this is to run a straight line around the room ( this is where a laser level comes in very handy )
1.Starting in one corner of the room, use a staff and mark on the staff the point where it meets the line.
2. Move the staff around 2 feet ( to the left, or right ) and mark where it meets the line again.
3. Repeat this process untill you have gone all around the room.
4. You will end up with a series of pencil marks on the staff.
5. The measurement between the highest and lowest of the marks is the difference between the highest and lowest points of the floor at the perimiter.

Note.. The highest mark on the staff will indicate where the staff crosses the line at the lowest point of the floor. The lowest mark on the staff will indicate where staff crosses the line at the highest point of the floor.

This will give you a good indication of how much self leveller you will need.

You can go one step further.....

Once you have ascertained the highest point of the floor, then proceed to mark the staff again at this point. Then almost repeat the previous procedure, but this time position the staff around the room with this mark next to the line. Then mark the wall at the bottom of the staff. You will end up with a series of marks at floor level indicating how high the self leveller needs to go.

Hope this makes sense.

Also Mapei do a self levelling compound that levells from 3mm to 30mm in one application - flexible and easy to use providing you add the correct amount of water - It is called Ultrapan Maxi - just add water..


Try this link for PDF Data Sheet

http://www.armatile.com/docs/doc45488adc66175_Mapei%20Ultraplan%20MAXI%20datash eet.pdf

[postie]

Thanks leatherface fully understand what you are saying thanks.

[Leatherface]

Basic tile setting out principles mate - adapted for another use.
Glad you understand.

Cheers !

[Dave]

ardex k15 will do upto 15mm straight from the bag and upto 50mm with chippings...

[postie]

Sorry for being stupid here dave but where do you get the chippings from.

[Dave]

Sorry for being stupid here dave but where do you get the chippings from.

Any decent builders yard.......

[postie]

Is there a trade name or do you just ask for chippings to put into SLC.

[Dave]

Just small chippings about 5mm or so in size will do...they are just added to give the SLC strength when it is applied thick....some types you can add sharp sand to as well.........

[Leatherface]

try " Chippings R Us " !!!!

[devonmark]

ardex k15b can go upto 35mm without the chippings..Mark.
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[Dave]

Is there a trade name or do you just ask for chippings to put into SLC.

no name mate just small chippings from buildrs merchants..