How it works

Our store offers two straightforward ways to complete your staircase project.

You can browse and purchase individual stair components — including treads, risers, strings, wedges, handrail brackets and more — selecting exactly what you need.

Alternatively, use our stair configurator to design a complete custom staircase. Once your design is finalised, you will receive an invoice to review and confirm the details. From there you can either proceed with payment via the provided link to place your order, or download a PDF copy of the quote for your records.

How to Measure Stairs – Rise & Going

Follow these steps to accurately determine the rise and going for your staircase. Always measure finished floor levels (including any flooring, tiles, or carpet).

Step 1: Measure the Total Rise (Floor-to-Floor Height)

• Measure the vertical distance from the finished floor level at the bottom of the stairs to the finished floor level at the top. The easiest way to do this is to hook your tape measure on the upper sub floor and mark a point on the wall 1500mm down and then measure from the lower sub floor up to this mark and add the 2 numbers together.
• Take the measurement in millimetres for accuracy.
• This is the most critical measurement and forms the basis of your entire stair calculation.

Step 2: Decide the Number of Risers

• Divide the total rise by a preferred riser height (common residential targets are 170–180 mm).
• Round to the nearest whole number.
• Check that the resulting individual rise falls between 115 mm and 190 mm (NCC requirement).
• Maximum of 18 risers per flight.

Example: Total rise = 2,700 mm 

Preferred rise ≈ 175 mm → 2,700 ÷ 175 = 15.4

Try 15 or 16 risers. 2,700 ÷ 16 = 168.75 mm rise (within limits).

For fully custom rises that aren't rounded to 5mm use the Stair Configurator

Calculating Total Run (Horizontal Length)

Once you have your selected going (240 or 250) and number of treads (number of risers -minus 1), use the following allowances depending on the stringer type:

Closed Housed Stringers

• Total Run = (Going × Number of Treads) + 70 mm (top nosing) + 30 mm (bottom of stringer)

Cut Closed Stringers

• Total Run = (Going × Number of Treads) + 40 mm (top nosing) + 0 mm (bottom)

Open Cut Stringers

• Total Run = (Going × Number of Treads) + 40 mm (top nosing) + 0 mm (bottom)

Housed Stringers (alternative allowance)

• Total Run = (Going × Number of Treads) + 50 mm (top nosing) + 30 mm (bottom of stringer)

Notes:

• Number of Treads = Number of Risers – 1
• Going is either 240 mm or 250 mm (as selected)
• Always double-check the finished floor levels and any packing or trimming required at the top and bottom before finalising the order
• Always check your calculations against the NCC befor certification