Hi,
I have been making a staircase and originally allowed 19mm top and
19mm bottom (38mm total) as a guessed nominal finished floor level.
(FFL)

I was going to fit it but realised I need to know the exact FFL as the
flight is bare wood (ie carpet can't hide a 1 or 2mm height diff).
This is for the top landing as I can absorb a bit of slack at the
bottom which will be tiled/lay stone.

I was looking at engineered wood flooring and most with a 3.6mm veneer
seem to be about 15mm thickness.

THe top landing is a 19mm ply sheeting subfloor at the moment and I
was going to gue the engineered wood to this. But then I see that alot
of engineered wood flooring comes with an underlay.

Do I need this ? If I do what sort of thicknesses are they ?

ie I need to know the FFL to trim the stairs and if a 15mm eng floor
needs 1mm of glue or 3mm of underlay I will need to add this...

Any advice ?

Cheers
Ed

wrote:
Hi,
I have been making a staircase and originally allowed 19mm top and
19mm bottom (38mm total) as a guessed nominal finished floor level.
(FFL)

I was going to fit it but realised I need to know the exact FFL as the
flight is bare wood (ie carpet can't hide a 1 or 2mm height diff).
This is for the top landing as I can absorb a bit of slack at the
bottom which will be tiled/lay stone.

I was looking at engineered wood flooring and most with a 3.6mm veneer
seem to be about 15mm thickness.

THe top landing is a 19mm ply sheeting subfloor at the moment and I
was going to gue the engineered wood to this. But then I see that alot
of engineered wood flooring comes with an underlay.

Do I need this ? If I do what sort of thicknesses are they ?

ie I need to know the FFL to trim the stairs and if a 15mm eng floor
needs 1mm of glue or 3mm of underlay I will need to add this...

Any advice ?

Cheers
Ed

Why do you need to add anything?

Why can't the final engineered wooden floor on the landing come right to the
edge of the staircase?

Or why can't you put the landing flooring down first, then install the
staircase, jacking it up if neccesary and filling the gap at the bottom as
you have already mentioned?

wrote:
Hi,
I have been making a staircase and originally allowed 19mm top and
19mm bottom (38mm total) as a guessed nominal finished floor level.
(FFL)

I was going to fit it but realised I need to know the exact FFL as the
flight is bare wood (ie carpet can't hide a 1 or 2mm height diff).
This is for the top landing as I can absorb a bit of slack at the
bottom which will be tiled/lay stone.

I was looking at engineered wood flooring and most with a 3.6mm veneer
seem to be about 15mm thickness.

THe top landing is a 19mm ply sheeting subfloor at the moment and I
was going to gue the engineered wood to this. But then I see that alot
of engineered wood flooring comes with an underlay.

Do I need this ? If I do what sort of thicknesses are they ?


Mine was about 3mm of why looked like polypropylene foam. It jut stops
the floor clacking on the concrete ;-(

ie I need to know the FFL to trim the stairs and if a 15mm eng floor
needs 1mm of glue or 3mm of underlay I will need to add this...

Any advice ?

Cheers
Ed