On a job that’s had anhydrite screed pumped in, using a Wolff gm200 moisture meter readings in parts are 99.9% screeds been down since February. At its deepest it’s 150mm, what I’m stuck with is the builders trying to push on with the job. The flooring that’s going down is polyflor safety flooring it’s being glued down. Looking for advice on best way to get around it or if it just has to be left until it dries naturally. Responses would be much appreciate, cheers.
Top hasn’t been grinded off no, got in touch with the firm who’s done the screed who have finally said it was anhydrite screed and no underfloor heating.
No wondering still wet if it hasn’t been grinded and it’s 150mm thick. You need to grind it get the windows open and let it dry out You can’t use a DPM if it’s that wet and you’d best off doing a evasive test on it to check.
Can you use a isolator sheet? Probably still need to dry it out longer. Get a dehumidifier in there too Sent from my iPhone using Tapatalk
If the builders are pushing you then push them back harder and walk away. Don't cut any corners with this stuff, it'll come right back and bite you in the ass and it'll catch a nut at the same time. I'm starting one in a few weeks. Base was laid in November (new build/no ufh) and the customer is one tight son of a b**ch, he wanted to wait so we decided to just grind the Latence off and left it to dry itself. In the meantime he moved in. Been backwards and forwards testing it and it's finally ready. Reading 68 on the hygro. Ive taken a deposit off him aswell as the cost for my time going backwards and forwards. He's not short of a few quid but was adamant he would wait a year if he had to
Thanks for your replies guys will just have to tell them to wait. Or use someone else who’s willing to take the risk
Grind the floor until you see the aggregate, leave windows open during the day but leave them on the latch if possible overnight.
Don’t have the equipment to do so also the customer won’t pay the money so told them to get someone else.
It’s the first time we’ve came across it up here, what do use guys do when you get jobs with anhydrite floors?
Tbh, its pretty much the norm on new build, where were based. Normally the screeding contractor should return, and grind, but they never do. Best just to gear up, and deal with it yourself, but obviously, you need a workload to deal with the cost of that. A lot of it is to do with the BREEAM rating
Leave it to dry, put a copper disk over it, Prime the life out of it and use a gypsum levelling compound Sent from my iPhone using Tapatalk
Grind it, I do quite a bit of it for customers that have been told to contact me also contractors get me in to do theirs.
