Just wondered if anyone can offer any advice regarding our floor screed and it apparently not drying.
The screed, which I believe is about 60mm anhydride, although I can’t lay my hand on the exact spec at this time, was laid in October 2018. The contractor eventually returned around January and buffed it to remove the laitance film. There was a delay with the UFH and it eventually went on at the start of February this year.
The majority of the ground floor will be LVT flooring. The flooring contractor came out around the start of March and the RH readings, which were taken with a digital Hygrometer were off the scale. He then had them buffed once again with a copper pad in the hope this would help. He returned at the start of April and the readings were both 90% RH. Since then we’ve cranked the UFH heating right up, being carefully not to crack the slab, and had all the doors and windows open but it seems it’s made no difference as the Hygrometer’s are back down. They are due to be lifted tomorrow afternoon and are already reading 86% and I expect they’ll go higher. It seems all the heat and ventilation has made no difference and it’s starting to feel like we’ve a house which isn’t fit for purpose.
About to enter ‘discussions’ with the contractor that laid the anhydride screed although, call me cynical, but I expect the response to be - we’ve never had this before!
Can anyone please shed light on where we go from here. We’ve built our dream home and although it’s almost finished we have no prospect of moving in as we can’t get flooring down. Has anyone used the liquid DPM products or membranes to get round a similar problem and if so has it been successful?
Many thanks.