Advice pls Karndean floor replaced in on a like for like basis, installer used existing screed which in parts was heavily bonded and laid a feather screed finish. Large areas of the existing screed were noted as 'blown' as the original strips were uplifted. The installer chose to use a Feather screed across the whole floor plan to patch and level these areas of large holes. A couple of years on and particularly in the areas where the original screeding had blown the Karndean is once again lifting. Should a feather screed laid directly onto the concrete floor to patch and level large areas/ holes of blown screed be considered suitable /a long term fix? In areas of heavy footfall would a feather screed (used where patching was required) be a suitable a base for the Karndean?
Note to above the replacement Karndean a couple of years old now is lifting because the screed below it has blown once again.
Sounds like the original problem was never addressed. Did you have any moisture readings taken? Did you have a dpm put down before the original levelling compound? Feather finish is too weak to patch in areas of levelling compound Sent from my iPhone using Tapatalk
Ardurapid then feather finish would be the way if your not uplifting the remaining screed that stayed down
If I think this is who I think it's a job I done taking advice off this forum at the time in 2013. Yes moisture was checked by myself and was fine. I've patched the floor as most of the screed was well bonded and fine then feathered. It was also buffed off due to laitenence. Since then a section in the hall way and kitchen has blown which wasn't the screed I installed feather or rapid. I never installed a full screed on the job as I was worried about compressive strength pulling the original screed as I was unsure what screed they had used.
