Replacing laminate flooring

[Osprey]

My parent's house built around 1980 .... has a living room, to which was added a small extension both parts have solid screed floors. Living room originally had a 6' window .... this was removed and room extended full width out by around 3m.

Currently has a pretty awful laminate floating floor laid over it, there is slight but a definite ?hump? as you move from extension to main room. At the point where the original external cavity wall was (now under the screed)

The is at 90 degrees to plank run. Going to need to relay flooring ...will add a 3mm underlay to try and help even out .... Q is whether fitting a Vinyl plank flooring might be better for this than laminate ?

Don't want to consider replacing screed as it would mean removing skirtings, replastering walls etc.

[Brian Reay]

Does the 'hump' move? A friend had a similar situation (ie a hump) and it turn out, the laminate had moved and created the hump. The actual floor underneath was level. When he took up the old laminated, replaced the underlay stuff etc, he was able to relay the old laminate- which matched the adjoining room.

[John Rumm]

Vinyl plank can look significantly better and does not have the problem of sounding like a tap dance surface when it gets walked on. However successfully laying *depends* on have very well done floor prep first.

Normal prep would be to apply self levelling compound first. This can be done with skirtings in place, since it only adds a few mm of extra screed depth typically.

What is the floor construction under the laminate?

[The Natural Philosopher]

"has a living room, to which was added a small extension both parts have solid screed floors."

Dementia setting in early?

[John Rumm]

Looks like it...

Still if its all screed, then latex self levelling all over will do the trick nicely.

[Brian Gaff (Sofa 2)]

I wondered myself though if the levels were the same or was it done at two different times, so to speak. Brian

[tabbypurr]

Is vinyl better in what way? It's just a case of preference, both have their upsides & issues.

NT

[ARW]

Would losing a few mm off the skirting height really matter if you laid self levelling up to it? Or is it more than a few mm?