Buying a Stair Runner by the Foot: Roll Widths & Cut Lengths

Standard roll widths sold by the foot

Converting linear feet to a stair count

Each step consumes roughly the tread depth plus the riser height, typically 10in tread plus 7.5in riser, or about 1.5 linear feet per step for a closed-riser stair. Add roughly 10 to 15 percent waste for pattern matching, top and bottom finishing, and any turns, plus extra length for a waterfall or hollywood installation style, which uses slightly more or less material respectively per step.

Open riser stairs use far less

On open riser stairs, the runner covers only the tread top and wraps the nosing, with no riser face to cover, so material use drops to roughly tread depth plus 2 to 3 inches per step, often 40 to 50 percent less linear footage than a closed-riser calculation.

• Always order in whole linear feet or metres; most suppliers will not cut to fractional lengths below a minimum.
• Confirm whether the quoted price per foot includes VAT or sales tax and whether cutting and binding are extra.
• Ask for the roll width before ordering rods or measuring your stair width; rods are sized to width, not length.
• Keep any offcut; it is useful for a hallway mat, a small landing patch repair, or a future step repair.

Buying checklist with price bands

Buying by the linear foot (or metre) means the price you are quoted usually covers carpet only, so always confirm what else is included before comparing two quotes side by side.

• Ask whether the per-foot price includes waste allowance, underlay, fitting and rods.
• Confirm the roll width used to calculate the per-foot price, since a wider roll costs more per foot but may need less total length.
• Request the price in both per-foot and total-flight terms so nothing is lost in the conversion.

Common specification mistakes

The most common error buying by the foot is comparing two suppliers' per-foot prices without checking whether they are quoting the same roll width, since a narrower roll can look cheaper per foot but require binding or seaming to reach the same finished runner width.

Common buying mistakes when ordering by the foot

• Ordering exact calculated length with no waste margin, then running short mid-fit.
• Forgetting that pattern repeat can force rounding up to the next full repeat, adding length beyond the basic waste allowance.
• Mixing up linear feet (length only) with square feet (length times width) when comparing supplier quotes.
• Not accounting for extra length needed at a top or bottom turn onto a landing.

Trade tip: buy from a single dye lot

When a job needs more linear footage than a single roll section holds, always request matching dye lot numbers across sections. Even small dye variations between lots are highly visible on a stair runner viewed under raking daylight from a landing above, more so than on a flat floor where the eye does not compare adjacent sections directly.

Metric versus imperial ordering

UK and European suppliers typically quote in linear metres and centimetre roll widths, while US suppliers quote in linear feet and inch widths, which can cause confusion when comparing an international supplier's price directly. Always convert to a single consistent unit before comparing quotes, and double check whether a quoted metre price includes VAT, since UK trade and retail pricing conventions differ.

Ordering for a split-level or landing-heavy staircase

Staircases with multiple half-landings or direction changes need more careful linear footage calculation than a simple straight flight, since each landing typically adds a fixed length of flat coverage plus turning allowance that a simple steps-times-average-length formula will underestimate. Always ask a supplier or fitter to measure a split-level stair in person rather than relying on a phone-based estimate for the order quantity.

Ordering extra for future repairs

Buying an additional 3 to 6 linear feet beyond the calculated total, stored flat in a dry place, gives you matching material for a future nosing repair or a small damaged section years down the line, when the original dye lot may no longer be available from the mill. This modest extra cost upfront is cheap insurance against a visibly mismatched patch or a full unnecessary replacement later.

Whatever you decide, get the numbers first: the stair runner calculator doubles as a stair runner length calculator, adding nosing wrap, landings, winders, pattern repeat and waste so you order the right length the first time.

Still deciding on material, width or pattern? Our hub on stair runners compares weaves, widths, backings and fitting styles side by side, then hands the numbers straight to the calculator.