Drying time 4 concrete

[Terry Cottar]

Hi Terry

Where abouts in the world are you. 600 for a cheapo hygrometer is robbery. They're about £80 here although you could spend thousands if you wanted to. As for the screeds still probably 50 or 60% of the sand cement in the UK is site mixed sand cement. There are around 30 million square meters of screed laid in the uk each year and 70% of that is hand laid so 50% of that is still a lot of "traditional" sand cement screeed. People don't realise often how long it takes to dry properly (or don't want to co its cheap)and equally unfortunately are often given unreasonable expectations by suppliers. Anhydrite is a good alternative cos it can be laid much thinner so the drying time is less but you do need to know how to treat it properly to make tiling on it successful. Training is available. I agree there is a lot of mod screed about. I guess it just highlights the need to know what substrate you are laying on.

belgium, mine is protimeter bld7705 i think bought it about a year ago for €630 it was mid range. you can buy a straightforward damp meter here for next to nothing but they are only good for surfacestuff. the screeds here are specced but thedy are using thinner bases where they are allowed and then fibre levelling compounds tested to 40+ newtons and tile within 24-48 hours

tel

 

[bighen]

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