Levelling over bitumen floor

tommo · Post by **tommo** » Wed Oct 15, 2008 10:04 pm

Hi, Recently used levelling compound on bitumen painted floor. This was inteded as preparation for tiling. Unfortunately despite using PVA the compound started to show crack lines and gives hollow sound when you knock on it (in some places). Shall I not worry about that and carry on with tiling over it or redo the levelling? If redoing, what's the best way. Thanks, Tom

protrade · Post by **protrade** » Wed Oct 15, 2008 10:30 pm

if its cracked then its no good I am afraid, rip it all up and start again

a lot of products are not suitable for use over bitumen

tommo · Post by **tommo** » Fri Oct 17, 2008 3:05 pm

Just been on the phone with BAL technical help. They say the only way is to remove the bitumen which would guaratee adhesion. My question is then what's the best way to remove bitumen? Thanks

Post by **ultimatehandyman** » Fri Oct 17, 2008 3:27 pm

Bitumen can normally be melted using a solvent. Perhaps you could try white spirits or similar?

tommo · Post by **tommo** » Fri Oct 17, 2008 5:21 pm

I have tried with the white spirit and I could get at least the black layer off. With some bitumen left in the pores will the levelling compound stick to that now you think? Could anyone advise from their experience? Thanks