Parquet flooring to replace with LVT or Engineered flooring

[jazzbhatia]

Hi, I have project to remove badly damaged/maintained bitumen bonded parquet flooring, approximately 20mm thick. The original screed (about 20mm thick) has a bitumen DPM, however this was only evident around the chimney areas. I cant be sure for the whole floor.



We are planning to install LVT or engineered wooden flooring as the replacement.



I am looking for some advice on how the bitumen should be prepared and what are my options of products to use on top of the prepared bitumen. It will also be beneficial to install a new (or additional) DPM at this stage



If I go with LVT, there will be a level reduction which will cause an issue at the stairs and under the doors etc. I might be able to get away with it by using engineered flooring, however engineered flooring is not my first option.



I appreciate any input

 

[dazlight]

Best way to go if doing LVT is get an asphalt subfloor at 20mm thickness.
Then you get a smoothing compound then LVT

 

[jazzbhatia]

Best way to go if doing LVT is get an asphalt subfloor at 20mm thickness.
Then you get a smoothing compound then LVT

what about if i applied blackjack, self levelling to seal it. followed by 18mm plywood to make the level then lvt on top?

just a little concerned that the plywood might rot

 

[dazlight]

It would do if any moisture got into it.