CQMMAN wrote:

Not sure which wooden floor to go for. It is in a south facing conservatory,
so will get hot in the summer and cold in those winter nights. For this
reason, I have been told than engineered is better (more layers, more
flexible). Is engineered better given these temperature fluctuations?

Yes. All wood floors will more but the engineered type will be more
stable with variations of tempreture and humidity


At a close flooring shop I was told that you shouldn't use ANY underlay
apart from a plastic sheet thing for stopping damp (because this will void
the warranty). I spoke to a specialist who said that I SHOULD use an
underlay with either type of floor. Who is correct?

Use an underlay. It will provide sound insulation. But it needs to be
the right type for the subfloor. On concrete you will certainly need a
type that provides a dampproof layer (I used Impactafoam from
http://www.soundreduction.co.uk )


Should both types be "floating"? We have a screed on concrete floor at the
moment.

Engineered has to be floating.

Should the wooden pieces be "glued" together?

For an engineered floor it depends on the type. click fit systems do not
need glue.


Also, I can still see damp areas in the screed. It has been down for about a
month (perhaps a month and a half).

You need to give it time to dry completely


Is there much of a difference in terms of difficulty to lay?

I have just installed a Kahrs 'Woodlock' engineered floor.
(http://www.kahrs.com )
This has a click fit system so dosn't need glueing and fits perfectly.
Cliping the boards together requires a little practice to get the to
'just click'
but by the third row it had clicked. I would imagine a solid floor would
be more
work to assemble and with glue no chance to undo a mistake.