Tiling over bithumen

[tjsmiler]

Hi all

i have just taken up some lino that was stuck down with bithumen (not quite sure if thats the correct spelling) i managed to get up most of the chewing gum like bithumen but there is also a black stain all over the floor, this black stain is not sticky and i can't see a reason why i can't go straight over it. Does anyone know what this staining is and am i right to think i can tile straight over?

Ps in order to remove this stain i would basically have to take up a layer of concrete with it, which would be a shame as for once the floor is perfectly flat all round

Your thoughts please

Thanks

 

[Concept PHT]

If its just a stain, then go straight over it....

 

[tjsmiler]

Thought so, just wanted to double check mate

Thanks Anthony

 

[L & R CERAMICS]

i done a cellar conversion last year and had the same problem,in the end we primed the floor then poured a couple of bags of self levelling compound over the top then tiled it ,lovely job

 

[tjsmiler]

Cheers L & R...... Will keep that in mind mate