Hello,
We have had asbestos tiles removed from the downstairs floor of our flat as they were cracked and posed a risk. What's left is a concrete substrate and bitumen residue. The asbestos removal people said it would be extremely costly to remove and that we could cover it with a self levelling screed.
As we're more than happy to have a concrete topping (for e.g. cemflow) as a final floor, we were just going to follow the advice for levelling over bitumen that wacol suggest in their video on the topic. However, their quantities are vast and their self leveller is not a wearing surface.
Does anyone have any advice on products to use when levelling over asbestos-containing bitumen so that a wearing concrete can be poured without too much risk of poor adhesion and/or cracking?
I am going around in circles. Number one concern is, because we can't abraded the bitumen, the DPM and primers alone might not create a good enough surface for adhesion.
I feel like I'm going mad with the lack of information or people making the dangerous suggestion of 'sanding off' the asbestos containing bitumen! Which I obviously won't risk! It cannot be a problem without a solution, given how common buildings of this era are. Please help!
