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You don’t use a A2 trowel if going over a sub floor with no Dpm. You need a b1 or b2. The only Dpm I’d use for that as it is designed for it is Ardex DPM1c Also don’t use any water mix compounds over asphalt. Best way to go. Fill any deep holes with ardex A46 or similar A 3mm coat of...

He’s most probably done it 7 years ago.

Will be fine. My wood fitter has sanded and refinished and repaired lots in the Wirral 1900-1980s

Feather finish won’t level the floor. You put that on 1mm to hide joints and screw holes. Fibre screed goes on 3-6mm thickness. You can do some levelling with that if needed.

If you gluing the LVT to the plywood you want a good grade plywood. SP101 , FG1. Butt up the edges don’t leave a gap. Ring nail / screw the ply down every 6” and every 4” on the perimeter Sand joints 2 coats of ardex feather finish or similar , sanding each coat down. Use a HT adhesive.

Should do yes. I take it you are floating the wood floor ?

Buy the Mapei prim grip

I’d go ardex na But Mapei renovation will do. Yes prime 1st

Why not go LVT in the kitchen. 5.5mm plywood Feather finish screed 1mm LVT 2.5mm

Yes. You put 6-9mm ply under the trim so it matches the underlay height so the carpet goes in at a nice height.

Easy shim and a Z bar trim

2 sides should be male and 2 sides female ?

Scrape anything loose A 3-5mm coat of ardex na Epoxy DPM1c or similar Glue straight to that.

Also you most probably need to use an epoxy Dpm over the 1st coat of smoothing compound as that subfloor won’t have a visqueen Dpm sheet I’d guess. What year was the house built.

Lots of reasons and the main one is because it’s crap. It won’t stick properly due to being a water mix and not a latex screed. It’s not moisture tolerant which you need with that sub floor. Ardex na is the best for that type of sub floor as it’s a bag and bottle ( latex ) Others you can use...

You be better using ardex na over that now if the adhesive is solid

That subfloor won’t have a Dpm so you need to do a Dpm butty Ardex way Ardex NA DPM1c ardex Na Fball way Fball 1200 pro F77 Fball 1200 pro

2 coats uzin PE404 Grit primer Ardex CL smoothing compound

Any Dpm sheet over older then 1990 I wouldn’t risk going over it without a liquid Dpm as it will be perished in places. you don’t but any primer under a liquid Dpm unless it’s a epoxy primer. Go with ardex DPM1c or Fball F77

what adhesive did you get ?