Comments for Loft Stairs

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Answer From Our Expert
by: Jeremy Wedge

The rules for stairs are quite prescriptive and depend upon the use they serving.

Please see the following guidance:

S3.4 The width of a stair, measured between handrails and clear of obstructions, must be at least 1 metre,
except -

a. the width of a private stair may reduce to at least -

i. 900mm where it is within the accessible storey, or
ii. 600mm where it serves only sanitary accommodation and/or one room, other than a living room or kitchen, or
iii. 800mm elsewhere; and

b. stringers and newels may each project not more than 30mm into the width; and

c. a stair lift projecting into the width may be fitted to a stair within a dwelling.

Note::

There are additional stair width requirements for escape stairs in Part E.

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