screed drying time.

[Alan M]

hi there.
im putting in a screed friday in a bathroom an dutility off of the bathroom . there will be about 75mm of concreteontop of a plastic layer.
how soon can i tile on top if it. it might need a layer of SLC to lvel it up perfectly.



thanks alan

 

[Del W]

?? Are you doing a sand/cement screed or concrete ?

 

[Alan M]

concrete. i dont think there would be enough strength to sand and cement only

 

[Muse2k8]

What is the ambient temp of the room?

 

[nybor62]

imo min 2 weeks before you tile, remember concrete gains its strength by curing and not drying

 

[Alan M]

sorry meant curing. concrete never stops curing fully .
the temp is probable 12- 15 maybe. il check .
im not cold in there but the home owner is freezing in the house( even beside the stove)

 

[Ajax123]

I would be allowing for either a liquid dpm or an uncoupling membrane. The concrete this time of year will take flipping ages...... Minimum of 2months if not longer before you tile. For the sake of the cost in a room the size of a bathroom i would not be tking risks and would uncouple......

 

[Alan M]

how soon after pooring the screed could i uncouple then tile

 

[TheTiler]

If it's concrete, it's 7 weeks, but depends on the thickness of the concrete and following temperature. In cold temps (below 5 deg C) you may have to extend the waiting time for up to 12 months. Always drill a pilot hole to determine dryness and use a moisture meter probe. It would be tiling suicide to tile on a green background as new concrete will shrink over time (especially when central heating is introduced into the room). This will result in the substrate shrinking and de-laminating from the the fixed ties, breaking the bond and resulting in complete tiling failure. It's reality.

 

[Alan M]

if i put a uncoupling membrane on would it allow me to tile sooner.