Firstly was it flooring grade ply ? Secondly was a damp test carried out ? Thirdly how the hell did the karndean rep miss all the obvious signs of...
As above really, there’s calcium sulphate screeds for calcium sulphate sub floors, grind it back and start again, plenty of systems available,...
Preparation fail, 100%
Welcome
Cement board, adhered to the floor by an ms flexi adhesive be a good option
https://www.refina.co.uk/prep-floor-equipment/floor-carpet-stripper/rfx210-8-floor-stripper.html
What about the refina one, miles cheaper
Yeah Floorfixx
No
Or a silane dpm
Decoupling system you say.......
Dan works for oxford city flooring, contact them buddy
Chuck some talc down
Use the underlay that’s sold with the click otherwise it will fail
Doesn’t sound like a dpm was applied
Softlay is 19db and only 2.1mm thick, 4515 is 18db.
This looks a bodge job
Also how solid is the customer base and will it be likely that the fella will look to work out of a van in the future and keep some of his...
Spin it off, leave it a bit then crack on with prep, job done,
Apologies misread your point