• So we had our new loft staircase installed last week. When the guy came round to do the survey they needed to know what type of flooring we're having and how thick it will be so they could calculate the correct height for the new stairs. I'm sure at the time either he or one of the loft company team said this was so they could get a flush level with that final flooring height (we are getting reclaimed and refinished pine boards which are 20mm thick).
    Yesterday I noticed that there is only 22 mm from the floor joist to the top of the last tread, so that means the sub floor will be flush with the last step but then we've still got 20mm of pine boards to go on top of that. When I brought this up with the loft guys they said the floor fitter will sort out that junction with a wood nosing but I can't see how that will work with the bullnose end of the last tread already there?
    He also said the floor thickness was needed for when the carpenter hangs the doors not so that the steps were flush with the final floor height. Is he just trying to fob me off or is this standard practice and I must of just assumed the whole flush with floor level thing?


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  • Yeah this is my worst nightmare. Next door neighbours just put a carpet over it. Interested in how yours pans out.

  • Your floor should be flush with that - is that the finished stairs?

  • Sounds like bullshit to me. You can’t fix a 20mm height difference between top of finished tread and finished floor level with a nosing. Stairs should all be equal rise from floor floor to meet b regs.

  • Landing step on my loft extension (outside rear room with another few steps up to the top) has a slightly thicker step, maybe to account for this. Can't say I have ever tripped on it or noticed tbh. I'll add pics shortly.

    I would just make sure they have a plan and it is sorted. Once the underfloor is up against the top step I imagine it will be harder to make good.

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