I am refurbishing a small under-stair toilet. I have removed the vinyl
tiles, which were cracked and broken, and underneath is a very thin layer
of tar or bitumen which looks like it was use to adhere the tiles. When
I say thin, at its thickest it's no more than 1mm (if that) and mostly it
is barely more than colouring the concrete. The floor is overall fairly
flat and even.
I would like to lay sheet vinyl flooring. How should I prepare the floor?
I have tried scraping off the bitumen with a hot-air gun and scraper but
it either has no effect (not thick enough) or it just pushes the tar
Can I lay the vinyl straight on to the bitumen or must I remove the
Could I paint the bitumen/concrete with PVA to seal it?
If I put down a thin layer of self-levelling screed will this react with
I have tried Googling but unfortunately I get every answer from 'do
nothing' to 'remove several mm of concrete with a special machine'!