Drying times for new screed?

[jono_h]

Can anyone advise how long I would need to leave a 50mm screed (over concrete base) before I can carpet?

Many thanks,

 

[WoodYouLike]

Rule of thumb: 30 days per inch (25.4mm) new concrete/screed

 

[Tozzy]

Rule of thumb: 30 days per inch (25.4mm) new concrete/screed

Wow, it'll take 3 months for mine then as my screed is going to be 3 inches in depth with tiles over the top. Glad I saw this thread; came in handy for me too . Thank you.

 

[will8000]

would the introduction of an industrial dehumidifier speed up the process and to what extent ?

 

[breezer]

no

 

[will8000]

could you explain how please i was led to believe that a dehumidifier would take the moisture content out of the room and therefore draw the moisture from the screed and unlike a heater not crack the floor or new plaster work could anyone explain where i am going wrong with this thought then please it would be much appreciated thanks and i'm fairly new at this so be gentle

 

[ronacretesimeon]

Yes, it takes 1 day per mm, so allow 50 days - or 7 weeks - for a 50mm screed to be dry enough to overlay with impermeable coverings such as vinyl and carpet.

The easiest way to speed the process is to use a product called Uniscreed. There are 3 grades:

Uniscreed Standard (a liquid admix) will cut this drying time down to 8 days.

Uniscreed Rapid (a powder admix) will cut it down to 3 days.

Uniscreed FastDry (a cement replacement) will cut it down to 1 1/2 days.

The cost goes up as the drying time comes down.

Good luck.

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