Guide · For the trade
Best carpet for stairs: fibers, constructions and what to avoid
The best carpet for stairs is a dense, low-pile wool or solution-dyed nylon in a woven Wilton or a tight loop, pile height under 1/2 inch, face weight 40 oz or more, over a 1/4 to 3/8 inch dense pad. Wool is the first choice because it springs back at the nosing and is naturally flame resistant; nylon is the durable second choice where budget or bleach-cleanability rules. Polyester, polypropylene, shags, high-low patterns and any pile over 1/2 inch belong somewhere other than a stair.
This guide is for the designer or the junior choosing a stair carpet, wall to wall or as a runner, with or without a hall and a landing attached. It is a sub-page of our stair runner collection, the 59 styles we spec most for stairs; wool in depth is in the wool stair runner guide, the pad in the carpet pad for stairs guide, and the spec for the installer in the stair runner installation guide.
Why a stair is the hardest floor in the house
All the traffic on a stair lands on a strip about 4 inches wide at the front of every tread and every footfall crushes the pile and flexes it over the nosing, ten thousand times a year on a family stair. So the stair carpet is specified for resilience first, soil hiding second, looks third. Softness is last; the carpet that feels plush in the sample hand is usually the one that mats in a year.
What is the best carpet type for stairs? The fibers ranked
| Fiber | On a stair | Why | Specify it when |
|---|---|---|---|
| Wool | Best | Natural crimp recovers from crush at the nosing; heathers hide soil; naturally flame resistant and self-extinguishing | The default for a residential stair in a Wilton or a dense loop |
| Wool and nylon blend, 80/20 | Very good | Wool's look and recovery with nylon's abrasion resistance; Prestige Mills weave several | A busy family stair, a client who wants wool at a longer life |
| Nylon, solution-dyed | Very good | Recovers nearly as well as wool, bleach-cleanable, lower cost; Milliken and Masland nylons carry Class I ratings and Green Label Plus | Rentals, basement stairs, dogs, a client who cleans with chemicals |
| Sisal, tight boucle | Good with care | Hard-wearing, but slick when the ribs run with the stair and stains with water | A coastal or modern house, ribs across the tread, over a dense pad; never seagrass or jute on a stair |
| Polyester | Avoid | Little recovery from crush; the nosings read as a shiny stripe within a year | Bedrooms, not stairs |
| Polypropylene | Outdoor only | Crushes and holds oily soil; UV-stable and hoseable | An exterior stair, glued direct, no pad |
Constructions: Wilton, loop and dense cut pile
Fiber is half the answer and construction the other half. A woven Wilton, where the yarn is woven through the backing rather than tufted into it, holds pattern crisp over the nosing and is the construction of most of the stair runners in our collection; Kane, Couristan and Bellbridge weave them in wool and in fine heat-set synthetics. A level loop or a tight boucle is the next choice and the one that looks like Berber: specify a dense, low loop under 7/16 inch, because the open, chunky Berbers of the 1990s snag on a stair. A cut pile works only when it is dense and short: a tight twist, 3/8 to 1/2 inch pile, 50 oz or more, where Masland and Fabrica's nylon cut piles sit. Avoid cut-and-loop and high-low patterns, whose cut tufts crush around the loops so the pattern flattens on every nosing and any shag, frieze or plush over 1/2 inch, which mats, hides the tread edge and is the carpet people slip on.
Best carpet for stairs and hallways together
Where the stair carpet continues along the upstairs hall, the stair sets the spec and the hall follows it; a hall takes a stair-grade carpet happily, but a stair does not take a hall-grade plush. Carry the same style, color and pad through both so the top step is level with the hall. A landing between flights is carpeted as a field in the same material or turned with a mitered seam; the installation guide covers both. Where the hall is a different carpet, change it at a doorway or the first tread, never on the landing.
Wall-to-wall or a runner?
Wall-to-wall stair carpet is the quieter, warmer and more forgiving install: no reveal to keep clean and no edge to finish. A runner leaves 3 to 5 inches of wood or stone on each side, reads lighter and more tailored, uses less carpet and more labor and needs a finished stair under it. Runners come at 27, 32 and 36 inches wide, or any width cut from our 1,397 wool broadlooms and bound; wall-to-wall is cut from 12 foot, 13 foot 2 inch or 15 foot broadloom and fitted tread by tread. On a stair that will not be refinished, wall-to-wall is the honest answer.
How to measure stairs for carpet
For a quote we need the tread width, the step count, the tread depth and riser height (a standard stair is 10 to 11 inches deep and 7 to 7.75 inches high), every landing with its dimensions and a note of winders and open sides. Each straight step takes about 20 inches of carpet in the direction of travel; a landing takes its full depth plus 2 inches per turn; a winder takes an extra foot. A straight 13-step stair uses about 22 linear feet of runner, or a similar length off a 12 foot roll cut into strips for wall-to-wall. Our installer measures on site before the order is placed, so the drawing numbers are for budgeting.
How to make carpeted stairs less slippery
Slip on a carpeted stair comes from a soft pile, a soft pad or a loose install, not from the fiber. Specify a pile under 1/2 inch, a dense 1/4 to 3/8 inch pad and a stretched, fastened install so the carpet cannot move under the foot. A loop or a Wilton grips better than a cut pile; sisal least and only with the ribs across the tread. Keep the nosing visible: avoid a pattern that camouflages the step edge in low light and where the client wants contrast at the edge, a bordered runner or stair rods do it. The ADA's 1/2 inch pile limit over a firm pad is the right reference for a stair an older client uses daily.
Color and pattern on a stair
Mid-tone heathers, tweeds and small all-over patterns are the best carpet colors for stairs: they hide the tracking line on each tread and the soil at the nosing between cleanings. Solid pale cut piles show both within a month. A stripe runs with the stair and makes it read taller; a small geometric or herringbone is the most forgiving pattern because the nosing crush disappears into it. Large medallions cost yardage to center on each tread and are for a formal stair. Our stairs and hallways filter sorts the library by what we have put on a stair.
Questions designers ask
How much carpet does a 13-step stair take?
About 22 linear feet of runner, at 20 inches per step plus one step for waste, more with a landing or a pattern repeat. Wall-to-wall uses a similar length off the roll, cut into tread-width strips. Net pricing is quoted to trade accounts once our installer has measured.
What should be avoided when specifying carpet for stairs?
Polyester and polypropylene indoors, cut-and-loop and high-low patterns, shags and friezes, any pile over 1/2 inch, open chunky Berbers, seagrass and jute and the 7/16 inch rebond pad from the bedrooms. Each crushes at the nosing, snags, slips or wears through.
How are stairs measured for carpet?
Count the steps, measure the tread width, depth and riser height and draw every landing, winder and open side. Allow 20 inches per step, the landing depth plus 2 inches per turn and one step for waste. Our installer confirms on site before the order.
How can a carpeted stair be made less slippery?
Specify a dense pile under 1/2 inch, a 1/4 to 3/8 inch dense pad and a stretched, fastened install. Loops and Wiltons grip better than cut piles; sisal only with the ribs across the tread. A visible nosing, by color contrast or a rod, helps on a dim stair.
What is the best carpet for stairs with pets?
A wool or solution-dyed nylon loop or Wilton in a heather or small pattern, pile under 1/2 inch, so claws do not catch and hair vacuums off. Solution-dyed nylon tolerates bleach-based cleaners if accidents are likely.
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