Hi all, I have an anhydrite screed flooring that was pumped in last October to the entire bottom floor of my house - 90sqm,over UFH (which isn't leaking before you ask!). Long story short, the original floor layer did a hygrometer test in one small area before laying LVT but then the floor eventually started popping all over the shop. I managed to get a full refund (thanks to a lot of you guys input), not only did he not do sufficient testing but I don't believe he applied a primer before the latex. Anyway.... we have new floor contractors who have been great and we have taken out numerous tests across the floor. However the last tests in the 2 least ventilated areas of the house - the porch (which is 70mm deep opposed to 50mm) and the downstairs WC/shower were showing 76/77 over the heat wave and have since risen to 81/82 since the major rainfall! My question is - could this be anything to do with the extra humidity and moisture in the air??! According to the formula - the screed which was pumped 10 months ago should certainly be dry enough now for a floor covering. Granted, it did have LVT on for some of this time and so the moisture didn't have anywhere to escape. But the tiles, which literally peeled off the floor (thankfully!) have been up a good month now. I'm at a loss as to how to dry the floor out any further. I wouldn't be able to isolate the areas for a dehumidifier to do any good. Could a change in weather be the cause??! My Google searches tell me yes but do you agree? Desperate for advice, currently living in the house on a dusty concrete floor! Thanks in advance
Have you got any pictures ? Has the existing adhesive & latex been ground off ? And if there is any surface latience this also needs to be ground off, before it will dry. Once these have all been removed, and mixture of heat & air flow can force dry the screed. Depending on what product your flooring contractor wants to use to prepare your floor, your flooring contractor could ask them to visit site, and carry out tests/and a spec which should then be suitable.
Hi, Yes existing adhesive and latex literally peeled off the floor along with the LVT so just back to the screed again. Original surface laitance was ground off before the first 'lay' and our new contractor will grind it again for the new LVT as he believes new laitance has appeared. He was doing this the week he was due to start laying floor. Do you suggest he does this now to help the drying period?
I replaced a while ground floor that started to pop 4yrs later! Took up everything back to original subfloor and ground out further with a grinder so wasn't dome properly in the first place. Maybe it wasn't done properly in the first place? Some will just rub a pad over it and say there you go its been ground down!
You’ll get false readings from anhydrate as they are like sponges. That’s why some manufacturers state you can only get a true reading from a carbide bomb test Sent from my iPhone using Tapatalk
