Threads, Risers & Strings

Threads, risers, and strings are the fundamental structural components that make up the staircase itself, forming the treads you walk on, the vertical front boards between each step, and the inclined side members that carry the whole stair structure. Whether you're replacing worn or damaged stair components in an existing staircase or fitting out a new build, these are the core elements that determine the staircase's structural performance, dimensional accuracy, and long-term durability.

Threads, Risers & Strings at McMahons

For current availability of stair threads, risers, and strings at McMahons, please contact your nearest branch directly. Our timber specialists can advise on available sizes, timber species, and sourcing options for your specific staircase project requirements, including both standard and bespoke stair component specifications.

For our in-stock staircase balustrade and finishing components, browse our full Stair Parts range including Burbidge pine Handrails, Newel Posts, Baserails, and Spindles.

When specifying stair threads, the minimum tread depth required by Building Regulations for domestic stairs is 220mm, with a maximum rise of 220mm. For renovation projects, matching the existing tread profile and nosing detail is important for a consistent appearance across old and new stair sections.

Why Choose McMahons for Your Staircase Timber?

With over 190 years serving Ireland's building and joinery trade, McMahons has the timber expertise and supplier relationships to source stair components across a range of species and sizes. Contact your nearest McMahons branch to discuss your project and confirm current availability.