Parquet sub floor questions

[Patters1978]

Hey everyone

Hopefully someone can help me out with my sub flooring concerns.

I have brought 3000 parquet blocks and painfull attempted to remove the bitumen off them last week! After 3 days and some 250 blocks down my fingers felt like they had fallen off so I gave up! I'm now into the process of just taking the backs off using my bench saw taking of around 2mm of tile which is giving me a very clean backing But I think the neighbours hate me right now lol

Anyway onto sub floor I'm parqueting 2 rooms first is 2x3msq and second is 3x4msq the latter is around 4-5mm lower than the first room both rooms are concrete.

My plan is to plywood the larger floor to bring it up level with the smaller

My questions are

1, what DPM should I put down on both concrete flooring

2, what should I use to stick the ply down? Is ply the best method

3, any recommendations on parquet glue

Cheers

 

[dazlight]

Does the sub floor have a dpm under it

 

[Tigercubrider]

When I cleaned up a load, I started using the freezer to harden the bitumen then used a scraper, followed by a belt sander to remove the backing. That worked great but was slow.

I then bought some more and tried the above but less successful, and found that PROPER white spirit removed the stuff. Very messy but using a varnish scraper I could do a fair few in an hour.

 

[Patters1978]

Does the sub floor have a dpm under it

I'm not too sure if I'm honest but I guess to do it to be safe ?

 

[dazlight]

I wouldn't be putting plywood down mate.
Have a look at Ardex DPM1c for dpm and Ardex NA Screeding compound
Or Fball do similar system