Advice needed

[Tom Bidwell]

Hi everyone. I’m after some advice please. I plan on laying real wood flooring in my lounge and having taken up the old carpet and underlay to reveal a concrete sub-base. It looks like there is a thin layer of what I assume is bitumen. 
 

what’s the best way to lay the wooden blocks - glue the wood floor blocks directly to the concrete, or put down some form of underlay (and then glue to that)?
 

Also, can you glue directly on top of bitumen? Finally, what glue/adhesive should I use?? Thanks.

[Mr Punter]

The silane based wood floor adhesives work on most substrates.  You do not require underlay, the blocks need to be fully stuck down.  Ask the adhesive supplier for advice.  It is expensive stuff.  Wood blocks are easy to mess up, so do your research and prep.

[joe90]

Do you know if the concrete floor has a damp course? In some older houses they laid bitumen on Concrete as a damp course so make sure before you remove it. I think bitumen is difficult to glue to. However wood block flooring used to be laid on/glued down using bitumen.