SLC Top Tips Please

[Smudger]

Hi Top Tilers.

Tiling a floor tomorrow (brazilian slate) about 8 sq m. Floor too uneven to make good with addy as I go, but haven't used slc for a while (long while) and could do with a couple of top tips learnt from your combined years of experience and expertise!
It is a square utility room laid with concrete and has been painted some time previously (mostly worn now). Here is what I am intending.
Remove any loose/flaky paint with stiff brush, use laser level to identify/mark different levels, start in far corner and apply slc.
Why main questions are: What is best slc? WHat is the best consistency? Can I tile in same day? ARe there any special things to look out for/ be aware of.

 

[Diamond Pool Finishers]

use a spiked roller, to remove air-bubbles!!

 

[White Room]

Follow manufacturers instructions and mix as close as possible to where you will pouring

 

[Scott]

Make sure you have enough! Im not very good at SLC either and laid some over UFH on Friday night. Was bloomin awful when i went in yesterday and then had to add another bag as it hadnt covered enough and had left a high spot over the conduit for the probe. A second bag pours over the whole floor and pushed around did the trick.

 

[Diamond Pool Finishers]

i use Latexplan Trade from mapei, its a two-part self-levelling and smoothing compound!!, it for 1-10mm differences,
coverage is 6 m2 at 3mm thickness approx!! hope this helps smudger

 

[Alan.P]

I'm with Scottley, make more than enough so you have plenty, I tend to mark the dips using old off cuts stuck on top of each other to match up to the high spots, then you have a better idea of the level when pouring.

 

[kilty55]

i use fibreplan which to be honest is the closest slc that ive found that actually self levels,also tried webber rs slc recentyly and it was also very good

highlight your high points/dips and work to eliminate these witth a trowel,work as close to the room as possible and keep a bucket of water spare for cleaning your gear down as you go

baton any edges of rooms that have holes and also baton the door so it doesnt come into another room,silicone the bottom of the batons to seal them in

 

[peckers]

I use ardex arditex na its a 2 part slc its not the cheapest but it does almost every thing! and its the best free flowing 2 part that i have found!
Make sure you have everything ready before you start.
fill any holes where it can escape.
across the doorway i always put down a piece of doorstop and seal with silicone against the floor(this can be removed when slc is dry easily)
some manufacturers say to prime the floor others say to dampen with water(check on the bag) but if you prime with sbr then let it dry before you apply the slc dont put it down when its tacky as it seems to slow down the self levelling imo.
mix to a smooth lump free cosistency.
poor out the slc not all in one spot try to gauge it so as it flows and spreads itself over an area of about 3-4m2
Push it around with a steel float to the required thickness(I use a boat steel float)
then do your next mix and repat until fully covered.
make sure the edges of the place you just put the slc stays wet so as the next lot that goes down next to it can all run into each other nicely.(IE dont stop for a cuppa till your done)
some use a spiked roller i never have,

 

[DHTiling]

Mapei |NEW!!!! SLC Ultraplan renovation screeds... great stuff and flows like stella..

Use a straight edge and try and figure your lowest points.. fill this and then work out at even depths.., IMO spiked rollers are for vinyl layers..

 

[White Room]

Used spike rollers for 2 part resin paints on floors

 

[doug boardley]

if your slate is uncalibrated, I'd not bother with the slc Smudger.

 

[DHTiling]

if your slate is uncalibrated, I'd not bother with the slc Smudger.

Yep.. Uno back butteererrrrrrr

 

[Daz]

if your slate is uncalibrated, I'd not bother with the slc Smudger.

Just use a PTB adhesive like Mapei P4.

 

[peckers]

And if it is uncalibrated slate then allow for more addy!!

 

[Scott]

Push it around with a steel float to the required thickness(I use a boat steel float)
then do your next mix and repat until fully covered.
make sure the edges of the place you just put the slc stays wet so as the next lot that goes down next to it can all run into each other nicely.(IE dont stop for a cuppa till your done)
some use a spiked roller i never have,

How deep is your slc steve?