Interesting situation. I would sand the paint offto expose clean timber. There are adhesives out there which are supposed to be suitable for use directly onto floor boards.Go with the manufacturers advice on priming, and grouting.
Coincedentally, I have just seen a DIY job wherea rubberised adhesive was used directly onto dirty unsanded boards and it appears to have stuck like the proverbial... time will tell
Hi Dave. theres that fix at 300mm centres again. I still dont know how those British Standards were come too.
It is impossible to follow those guide lines especiallyas regards fixing floorboards, as the joists are probably at 400mm centres. Seems to me that they mean 300mm in both directions. No problem fixing a second layer at 300mm centres. am i missing something
