Planning a sisal stair runner

Sisal is hard-wearing, textured and popular on stairs, but it behaves differently from wool carpet: it is stiffer, it has limited flexibility compared with many softer carpets, and it will not tuck neatly into a tight riser corner.

Before calculating the length, confirm that the particular sisal product is suitable for stairs. Ask the manufacturer or installer about weave direction, fitting style and cutting allowance.

Your staircase

Optional starting measurements

Example measurements only, not building-code advice. Replace them with measurements from your own stairs.

Check a few steps before using one set of measurements for the whole flight.

Number of stairs

Count the tread-and-riser pairs the runner will cover. Exclude landings.

Tread depth (in)

Measure the runner path across the flat tread. Fractions like 10 1/2 work.

Riser height (in)

The vertical face between two treads.

Waste allowance

Custom%

10% is the starting allowance here, not a guarantee. Ask your fitter about patterns and turns.

Add a nosing / overhang allowance per step

Enter the extra runner path around the edge, including any underside wrap. Do not add it twice if it is already included in your measurements.

Your runner estimate

20 ft 3.1 in

Total runner required for 13 steps, including a 10% waste allowance.

Total runner length in each unit
Inches	243.1 in
Feet	20.26 ft
Feet & inches	20 ft 3.1 in
Yards	6.75 yd
Meters	6.17 m
Centimeters	617.47 cm

Length to order

21 ft

7 yd · 6.4 m · 252 in

This calculator provides an estimate based on the measurements and installation assumptions you enter. Complex, curved or winder staircases may require professional measurement.

One step, shown in profile

Side elevation of a staircase. The runner travels across each tread and down each riser, so every step consumes tread depth plus riser height of material.

Waste for sisal

5 to 8% is usually enough on plain sisal because there is no repeat to match. Herringbone and boucle weaves have a visual direction, so allow 10% to keep the weave running consistently.

Width options

Natural fibre runners are commonly stocked at 27 in, 30 in, 32 in, 68 cm and 70 cm. Check the reveal against your stair width before you commit — sisal cannot be trimmed narrower after binding.

Fitting notes

Sisal needs a good underlay and firm fixing. It does not compress like wool, so tackless strip and staples must be set precisely. Expect a slightly higher labour rate than a soft carpet runner.

Questions people ask

Does sisal need extra length?: Use the measured path for the approved fitting style. A sisal product’s backing and weave affect how it can bend; do not assume that every sisal runner uses the same allowance.
Can sisal be cut to a custom width?: Yes, from broadloom, but the cut edges must be bound. Ready-made sisal runners come in fixed widths only.

Related guides

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