Laying new floor where there was uneven parquet

[Chedz74]

hi,

I've got a 1950's house, it had a few small rooms on the ground floor with parquet (fairly low quality wood, badly fitted). Previous owner removed some of the walls to make the place more open plan, all good. The problem is that the rooms floors were laid individually so there are a few slopes and wobbly bits between rooms, the floors in the rooms weren't level.

I want to level the entire ground floor so I can put down engineered oak or karndean.

If I remove the parquet and any bits of concrete where the old walls were I think i'll need a tonnes of levelling compound....I assume I could get it pumped in cheaper than mixing up loads of bags?

Second question....the sub floor is concrete, its fairly solid and dry...but the parquet was stuck down with what looks like bitumen, and its really nasty sticky stuff.....any ideas what I need to do to prepare the floor for screeding?

I'm really lost as to how to sort this floor out so any advise most welcome.

cheers

Chedz

 

[marlb]

I had the same problem in my house about 8 years ago. I put latex floor leveling compound down, straight on top of the bitumen and I have had no issues thus far.

 

[crazydaze]

You need to check to see if the Bitumen is a part of the DPM of the floor or not, if it is, then scrabble the bitumen, then you need to lay a Liquid dpm, screed the floor and then fit the new flooring.

If the Bitumen is not part of the DPM, then you can look/speak to someone like Arditex about Ardit NA which is a screed that can be installed over bitumen, for the time, hassle etc, it would be best to mix on-site rather than pump.

If you are installing Engineered Flooring, it will be 'forgiving' regarding mild uneveness in the subfloor, if you are fitting LVT (Karndean, Amtico etc) the floor needs to be prepared as smooth as a billiard table or the subfloor faults will show through terribly.