21mm floor screed dry in 1 day!!!!

[307camel]

Screeded Floor - 21mm - Applied wet (2).jpg (152.81 KiB) Viewed 1418 times

Screeded Floor - 21mm - Applied wet (2).jpg (152.81 KiB) Viewed 1418 times

Hi,

Due to level issues I dug up my old floor and re screeded at 21mm. I know this is pushing the boundaries as it is very thin but I decided to give it a go.

Process was as follows:

- Got Level off of next room floor and make concrete strips across the room to run a straight edge along to level screed (draw across) - no requirement for wooden battens
- Wet the underlying concrete slab 3 times the night before and twice in the morning
- Applied a SBR/Cement slurry prior to laying screed
- Mixed screed up at 3:1 with a few glugs of SBR (sharp sand:cement) - wetness probably between mortar wet and traditional screed mix.
- Poured screed down on floor and spread with trowel
- Straight edge across the concrete strips to draw excess off
- Finish off with trowel where necessary

Many people have said a screed of 21mm will take 3 weeks to dry. I get home after 1 day and it seems solid. SEE PICS for colour etc.....

Is this correct and may I ask why screeding isn't just done like a concrete mix (i.e. wetter). No cracks seem to have appeared even at 21mm. Being wetter seems a much easier way to get a decent result????? And it sets quickly?

Thanks guys

[royaloakcarpentry]

You may think it is dry but a moisture content reading will prove otherwise.

Method of application is a good one which works. Not all areas are big enough for screeding rods etc. Going point to point is the way many a wet tradesman will proceed.

[307camel]

Thanks.

I am hopeful it works fine!