Another floor tile question!

[aet1]

This summer I will be taking off the vinyl flooring in my kitchen, then the underneath cork tiles, leaving the tar or whatever that stuck the cork tiles down then I want to lay ceramic tiles.
The hallway had cork tiles which I removed - but then spent ages getting a flattish surface on the tar. I tried a hot air gun to soften it before scraping, I tried solvents and brute force with a paint scraper.
I would love any suggestions.
I have considered just pouring self levelling over it. The parallel discussion today about insulation under tiles makes me wonder if I should try a completely different tack. but I don't want to raise the finished floor height if I can help it.

 

[sammy.se]

What's under the tar, floor boards or concrete?

 

[Spectric]

Buy yourself a " Big mutt "

https://www.screwfix.com/p/roughnec...VFu7tCh3ZTAumEAQYASABEgJwzPD_BwE&gclsrc=aw.ds

 

[aet1]

What's under the tar, floor boards or concrete?

Sorry for the delay in replying. Concrete.

 

[aet1]

Buy yourself a " Big mutt "

https://www.screwfix.com/p/roughnec...VFu7tCh3ZTAumEAQYASABEgJwzPD_BwE&gclsrc=aw.ds

I didn't think of that, I have something like that with a 3" blade - for chopping through tree roots, I could see if it works as it is or sharpen the blade a bit (I wear safety shoes!). Something I did learn last time was not to walk on vinyl flooring if you have any of the tar on your shoes - found that after using various solvents, (that's one reason I'm changing the kitchen flooring - I found there is no way to get the yellowish stains out of the vinyl whatever I tried.

 

[Doug B]

Personally I’d just cover the bitumen with a self levelling compound suitable for laying over tar if the floor is not flat.
Alternatively if the floor is fairly flat just tile over the bitumen with a suitable adhesive if you don’t want to raise the floor level.