Hi dan. Actually the advice may change soon as a result of some quite extensive independent research on the most accurate moisture test methods along with drying time advice. I will keep you posted .... Excuse the pun.
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Discuss Moisture Meter - Test Floor Screed Moisture Before Tiling in the UK Tiling Forum area at TilersForums.com.
Hi dan. Actually the advice may change soon as a result of some quite extensive independent research on the most accurate moisture test methods along with drying time advice. I will keep you posted .... Excuse the pun.
I cant remember if it's the 5... I think so but I can check tomorrowIs that the Tramex CME5???
What are the ideal meter readings for screeds?
A simple floor hygrometer is about £100... The hygrometer is a European standard recognised test but it can be tricky as its affected by temperature and humidity changes. I've used them dozens if not hundreds if times. You cant always take the readings for granted. You do not need a wireless sensor. It simply stick to the floor using water free tape and you take readings after about 4 hours (if it's over about 80% you might as well take it up as it's still wet) if after 4 hours its below 80% read it after a full 24 hours and then again after 48 hours. If both readings are below 75% its dry. If both are above 80 % it's not dry, if both readings are between 75 and 80 you can do some interpretation with experience but that takes a while to work out as you have to take account of lots of variables finally If one reading is below 75 and one above it usually means its almost dry and responding to environmental conditions. The underfloor heating must be off for 48 hours prior to testing. My preference is tge carbide bomb but that's expensive and not really a DIY job. Bear in mind that ALL the same issues and uncertainties exist with any type of screed or concrete.I am wondering if somebody tried buying cheap humidity probes from China and comparing the results with a professional tool. I would like to measure the moisture content of my anhydride screed but buying 1250Eur Tramex kit is quite expensive (CMEX5 + a cable + probes).
When you take a look at the expensive "professional" tools, they seem very similar to what you get from china.
I am thinking of drilling a hole and putting the cheap probe inside + butyl tape isolation on the top to equalise the humidity.
Even the Hygrohood can be DIY for 30Eur - a plastic box 5eur, a butyl tape 5eur and a wireless humidity sensor 20Eur.
If you take a closer look at the Hygrohood, the humidity meter looks like Tramex used the cheapest they could find.
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