Why Stairs Are the Most Demanding Surface You Will Ever Carpet
Every foot that lands on a stair tread does something flat floors never experience: it bends the carpet over a sharp edge, compresses the pile against the nosing, and then releases it again with each step. Multiply that cycle by the number of people in your household, multiply again by the number of trips per day, and you start to understand why carpet on stairs fails earlier, looks worse faster, and demands a different installation logic than carpet in any room.
The installation process itself carries weight that most guides underestimate. Getting it wrong does not just mean a wrinkled riser or a loose tread — it means a tripping hazard, accelerated fiber wear at the nosing, and a staircase that needs to be pulled up and re-done within a few years. Getting it right means understanding the two fundamentally different methods, selecting material that suits stair geometry, preparing the substrate properly, and executing each step in a sequence that is not interchangeable.
This guide covers all of it, in the order it actually happens on a real staircase — from what you nail down before carpet is ever unrolled, to how you finish the final riser and inspect the result.
The Two Installation Methods and When Each One Is Correct
Before materials, before tools, before you unroll a single inch of carpet, you need to commit to an installation method. The method determines how much carpet you buy, how you cut it, how you place tack strips, and what the finished staircase looks like. Choosing the wrong one for your stair profile wastes material and creates an installation that looks improvised rather than intentional.
The Waterfall Method
The waterfall method runs a continuous piece of carpet from the top of the staircase to the bottom, bending it over each tread edge and dropping straight down the face of each riser without wrapping underneath the nosing. The carpet simply folds at the stair nose and continues in a cascading line — which is exactly where the name comes from.
This approach uses less material per staircase because there is no tucking or wrapping, and the installation is faster because there are fewer tacking and cutting operations per step. It also handles thicker carpet better, since dense or high-pile material is difficult to bend sharply around a nosing without buckling. For curved staircases, waterfall installations are far more forgiving because they do not require the carpet to contour tightly around the shape of each tread edge.
The waterfall method is most appropriate for staircases without nosing, or where the nosing projection is minimal. It suits a more contemporary or casual aesthetic. The limitation is that the carpet-to-riser transition at each step nose is softer and less defined, which some homeowners find less polished than the alternative.
The Cap and Band Method (Hollywood / Wrapped Nose)
The cap and band method — also called Hollywood style, wrapped nose, or French cap — works differently. Instead of one piece of carpet flowing continuously, the tread and riser are treated as separate surfaces. The carpet is pulled tight over the stair nose, tucked and stapled beneath the lip of the tread, and a second piece covers the riser face. The result is a crisp, structured edge on each step where the tread profile is clearly defined.
This method requires more material, more labor, and more precision. Each tread piece must be cut to accommodate the nosing profile and stapled securely underneath. The visual reward is a staircase that looks tailored rather than draped — the stairs appear individually upholstered, with clean seams at the junction of tread and riser. The tighter wrapping also means less carpet flex at the nose over time, which distributes wear more evenly across the tread surface instead of concentrating it at a single fold point.
Cap and band works best with solid-colored or minimally patterned carpet, because the separate pieces need to align without visible mismatches at the seam. Thinner carpet with a short pile handles the nosing wrap more cleanly. For staircases in formal entryways, open-plan homes where the stairs are a design feature, or any installation where finish quality is the primary concern, this is the method that delivers the better result.
If you are weighing different flooring approaches for your staircase beyond carpet alone, it is worth understanding how laminate performs on stairs as a comparison point — see laminate flooring on stairs for the specific constraints that rigid-core materials introduce.
Selecting the Right Carpet for Stairs Before You Begin
The carpet you choose will determine how long the installation holds up, how safe the staircase is to use, and how much of the installation process you spend fighting the material. Not all residential carpet is appropriate for stair use, and specifying the wrong product — even a high-quality one — is one of the most common reasons stair carpet fails prematurely.
Fiber Type
Nylon is the benchmark fiber for stair carpet. It combines resilience — the ability to spring back after compression — with abrasion resistance that outperforms every other synthetic option. On stairs, where the nosing area receives repeated directional pressure and the pile is bent over a hard edge constantly, nylon holds its structure over years of use in a way that polyester cannot replicate. Polyester offers better inherent stain resistance and a lower price point, but it crushes faster under concentrated foot traffic, which means the stair nose area flattens and looks worn within a fraction of the time a nylon installation would take.
Triexta (marketed as SmartStrand by Mohawk) is worth mentioning for households with pets or young children. Its stain resistance is built into the fiber at a molecular level rather than applied as a surface treatment, which means it does not wash off over time. For households that generate frequent spills on stairs, triexta’s combination of stain protection and reasonable resilience makes it a practical alternative to nylon.
Wool is excellent in terms of natural resilience and appearance, but its cost is difficult to justify for a staircase where wear concentrates in a narrow zone and replacement eventually becomes necessary regardless of fiber quality.
If you are still deciding between fiber types for your broader flooring project, the breakdown at nylon vs polyester carpet covers the performance differences in detail.
Pile Height and Density
Keep pile height at or below half an inch. A pile height of three-eighths of an inch is generally considered the optimal target — low enough to install cleanly over a nosing, high enough to provide underfoot comfort on a hard tread. Anything taller creates two problems: it folds unpredictably at the stair nose, forming a visible crease that wears rapidly, and it can catch toes on the way up the stairs, which is a genuine safety issue rather than a minor aesthetic concern.
Density matters as much as pile height. A dense, tightly constructed carpet — one where you cannot easily spread the fibers apart and see the backing — holds up far better than a loosely constructed one at the same pile height. Face weight is a useful proxy: look for at least 35 ounces per square yard for stair applications, with 40 or higher preferred for busy households.
Pile Construction: Loop vs Cut
Both loop pile and cut pile can work on stairs, but with specific caveats. Tight, low Berber loop pile is durable and resists crushing well. However, larger loops — particularly in less tightly woven Berber constructions — can snag on shoe edges or pet claws at the stair nose, pulling loops out of the backing and unraveling. If you choose loop pile for stairs, the loops must be small and the weave must be dense.
Cut pile constructions — particularly textured cut pile and frieze — are well-suited to stairs. Frieze, with its tightly twisted, curled fibers, is especially effective at hiding footprints and wear patterns that develop over time on each tread. The twist prevents the fibers from laying flat in a visible direction. Saxony and plush styles are less appropriate because their longer, uniform cut pile shows every footprint and every compression mark from the stair nose. The visual degradation is rapid.
For a direct comparison of how these pile structures behave under sustained use, the article on loop pile vs cut pile carpet walks through the trade-offs across surfaces — stairs included.
Tools and Materials You Will Need
Having the wrong tools available midway through a stair installation is not just inconvenient — it can mean stretched carpet that will not seat properly, tack strips placed too shallow to hold, or edges that fray because the cut was made with the wrong blade. Assemble everything before starting.
Tack strips: purpose-made stair tack strips, which are narrower than flat-floor strips and cut to stair width. Do not use cut-down room tack strips as a substitute — the nail spacing and tooth angle differ.
Carpet padding: high-density, stair-specific padding at a maximum thickness of 3/8 inch. Standard room padding is too thick for stairs; it creates a spongy feel underfoot and causes the carpet to flex excessively over the nosing, accelerating wear at exactly the point where wear is already highest.
Knee kicker: for stretching the carpet onto tack strip teeth on each tread. A power stretcher is used for flat floors; on stairs, the knee kicker is the right tool for the confined geometry.
Stair tool (staple bar): a flat metal tool used to push carpet into the crease between the tack strip and the riser, seating the edge cleanly. This is different from the knee kicker and both are needed.
Staple gun: a heavy-duty manual or pneumatic staple gun for securing padding and carpet edges, particularly at the riser base and tread back on the cap and band method.
Utility knife with fresh blades: stair carpet cutting demands clean, straight cuts. Dull blades drag and fray the backing. Change blades frequently during a stair installation — they dull faster on carpet than most people expect.
Hammer and nails: for securing tack strips to wood treads.
Tape measure and chalk line: for accurate measurements of each tread, riser, and nosing profile before cutting.
Carpet seam sealer: applied to all cut edges before installation to prevent fraying. This step is skipped more often than it should be, and frayed edges at the riser seam are the result.
Preparing the Stairs Before Any Carpet Is Installed
The preparation phase is the one most DIY installations rush through and most professional installations spend the most time on. A staircase that is not structurally sound before carpet is laid down will transfer every creak, loose board, and uneven tread through the finished installation in a way that cannot be corrected without pulling everything up again.
Remove Existing Flooring
If there is existing carpet, start at the top and work down. Cut the carpet across each tread with a utility knife to create manageable sections, then grip and pull firmly back from the tack strips. Use pliers for sections where the carpet has bonded tightly. Once carpet is removed, extract every staple from the treads and risers — a flat pry bar and pliers are the most effective combination. Leaving staples in place creates points where new padding will catch and tear, and where carpet will create visible lumps.
Remove old tack strips as well unless they are in genuinely good condition, properly anchored, and have teeth that are still sharp and upright. Bent teeth do not hold carpet securely and are not worth trying to salvage.
Inspect and Repair the Substructure
Walk every tread and apply body weight to the corners and center of each step. Creaking indicates movement between the tread and the stringer or riser. Address this before installing carpet — carpet will not suppress stair noise caused by structural movement, and the noise will be just as audible or worse through the finished installation.
For squeaking caused by tread-to-riser separation, apply wood glue to the joint and clamp if accessible from below, or drive screws through the tread into the riser from above at an angle. For squeaking caused by tread-to-stringer separation, toe-screw through the tread into the stringer. Counter-sink all screw heads below the tread surface and fill with wood filler — any protrusion will telegraph through padding and carpet.
Sand or plane any high spots on treads, and fill low spots and gaps with wood filler or a patching compound appropriate for the substrate. The goal is a surface that is level within 3/16 of an inch across each tread. Variations beyond that will be visible and tactile through the finished carpet.
Install Tack Strips
Tack strips go in two positions on each step: across the back of the tread, approximately half an inch from the riser face, and across the base of the riser, approximately half an inch up from the tread surface. The teeth on both strips point toward the corner formed by tread and riser — this is the crease where the carpet will be tucked and held.
Cut strips to the stair width minus a quarter inch on each side — the carpet edge should overhang the strip slightly and be tucked down the side wall rather than exposing raw tack strip at the stair edge. Nail strips securely into the wood. On concrete stairs, use a hammer drill to pre-drill and use masonry nails or construction adhesive.
Leave the two corners of each step — the tread-riser junction — clear of tack strips. This crease is where the carpet folds, and a strip in the corner would prevent the carpet from seating cleanly into the angle.
Cut and Install Padding
Cut padding strips to fit only the tread — never the riser. Riser padding serves no functional purpose, creates bulk at the fold point for waterfall installations, and interferes with the cap and band method’s riser piece seating flush. The padding strip should cover the full tread depth, from the back of the tread to just over the nosing edge, and wrap down the riser face approximately two to three inches.
Center each padding strip and staple it along the back edge, placing staples diagonally every two inches against the tack strip. Staple the front edge where it wraps over the nosing as well, keeping the padding smooth without wrinkles or folds. The padding surface should be waffle-pattern side up, which is the side that provides cushioning and grips the carpet backing.
How to Install Carpet on Stairs Using the Waterfall Method
The waterfall method is installed top-to-bottom — always. Starting from the bottom and working up produces loose carpet that bunches toward the top as you work, and the final tread at the top cannot be properly tensioned. Starting from the top allows gravity to assist the installation and gives you proper leverage on every step below.
Step 1: Measure and cut the carpet. For a straight staircase with consistent tread depth and riser height, measure one representative step — tread depth plus riser height plus two inches of extra length — then multiply by the number of steps. Add an additional six inches of total length for margin. For the width, measure the stair width and subtract one inch (half inch per side) for the edge tuck. Cut one continuous piece for the full staircase run.
Step 2: Position the carpet at the top landing. Secure the carpet to the top landing area first, using tack strips at the landing edge or stapling to the riser face at the top of the stairs, depending on whether the staircase has a full landing or opens directly to an upper-floor surface. The top edge should be neatly tucked under any transition threshold or against the baseboard at the landing.
Step 3: Work the first tread. Pull the carpet down over the first riser and across the first tread. Using the knee kicker, position it three to four inches from the back of the tread and drive the carpet onto the tack strip teeth at the tread back. Apply enough force to take up any slack — the carpet should feel taut from the top landing down across the tread face. Use the stair tool to press the carpet into the crease between the tread tack strip and the riser. This seating motion is what locks the carpet onto the teeth properly.
Step 4: Continue down each step. Pull the carpet over the nosing of the first tread and down the face of the next riser, maintaining consistent tension. At the second tread, repeat the knee kicker and stair tool process. Work systematically — tension, seat, move to the next tread. Inconsistent tension is the primary cause of visible unevenness in a completed waterfall installation.
Step 5: Trim and finish the bottom riser. At the bottom of the staircase, trim the carpet to finish neatly against the floor surface. Tuck the raw edge under a threshold strip or staple it to the face of the bottom riser, then cover with a metal transition strip appropriate for the flooring type at the base of the stairs.
Step 6: Address the side edges. Trim any excess carpet at the sides and tuck the edges down between the tread and the side wall or stringer. A stair tool and hammer work for pressing the edge material into this gap. Alternatively, bind the carpet edge before installation — a bound edge looks more intentional and eliminates fraying at the sides entirely.
How to Install Carpet on Stairs Using the Cap and Band Method
The cap and band method requires more cuts, more measuring, and more attention to seam alignment, but the sequence is logical once the pattern is understood. Each step produces two pieces: a tread cap that wraps over the nosing, and a riser band that covers the vertical face.
Step 1: Measure each step individually. Do not assume all treads are identical — measure each tread depth, nosing projection, riser height, and stair width separately. Even new construction has small variations. The tread cap piece should be wide enough to cover the full tread depth plus the nosing projection plus enough to tuck approximately two inches under the nosing lip. The riser band should be cut to the exact riser height plus one inch top and bottom for tucking.
Step 2: Cut all pieces before starting installation. Cut every tread cap and riser band before the installation begins, labeling pieces to their corresponding step. Apply seam sealer to all cut edges and allow it to dry fully. This preparation adds time upfront but makes the installation sequence faster and reduces the risk of miscuts midway through.
Step 3: Install the riser band first on each step. Starting at the top, position the riser band against the riser face. Tuck the top edge over the tack strip at the base of the riser and seat it with the stair tool. Staple the bottom edge to the tread surface, keeping the staples close to the tread-riser junction where they will be hidden under the tread cap. The riser band should sit flat and taut with no wrinkles — staple the sides to the stringer if needed to keep the piece from pulling in at the center.
Step 4: Install the tread cap. Position the tread cap with the back edge against the tack strip at the rear of the tread. Use the knee kicker to drive it onto the teeth, then pull the front edge of the tread cap over the nosing and tuck it tightly underneath the lip. Staple the tucked portion to the underside of the nosing or to the riser face below the nosing, depending on the stair geometry. The cap should lie completely flat across the tread and wrap cleanly around the nosing without puckering.
Step 5: Check the seam alignment. At the riser-tread junction, the seam between the riser band and the tread cap should be tight and straight. If the seam gaps or shows the tread surface beneath it, re-tuck and re-staple until it closes. A visible seam at the stair nose will become a wear point and will worsen over time.
Step 6: Repeat for every step, working top to bottom. Each step follows the same sequence: riser band first, then tread cap. Maintain consistent tension on each piece and verify that each tread cap is fully seated on the tack strip at the back before moving to the next step.
Common Installation Mistakes That Cause Failures
Most stair carpet problems that appear within a year of installation come from one of a small set of avoidable errors. Understanding them before you start is more useful than troubleshooting after the fact.
Using padding that is too thick. Standard flat-floor padding at half an inch or thicker is the single most common mistake in stair carpet installation. Thick padding causes the carpet to flex excessively at the nosing on every footstep, which crushes the pile at that point rapidly and eventually lifts the carpet edge off the tack strip. Stair padding must not exceed three-eighths of an inch — the firmer and thinner the pad, the longer the carpet holds its shape at the nosing.
Insufficient tack strip fastening. Tack strips that are not fully driven into the substrate work loose over time, especially under the repeated impact load of stair use. Each nail in the strip should be fully sunk. Test each strip by pressing the carpet against it by hand before full installation — it should not flex or rock.
Inadequate seam sealing on cut edges. Unfinished cut edges begin to fray within weeks on a high-use staircase. Seam sealer is inexpensive and the application takes minutes per step — skipping it is a shortcut that creates a problem requiring reinstallation to correct.
Starting from the bottom rather than the top. Bottom-up installation on a waterfall method staircase produces a top landing edge that cannot be properly tensioned and tucked. Always work top to bottom.
Skipping the structural inspection. Installing carpet over squeaking treads or loose risers produces a finished installation that is noisy and eventually shifts as the movement below the carpet continues.
Choosing pile that is too high for the nosing profile. Carpet that is too thick to wrap cleanly around the stair nose creates a visible bulge at the nosing in a cap and band installation, or an exaggerated fold in a waterfall installation. Both look unprofessional and wear at accelerated rates.
Stair Runners vs Full-Width Carpet: Which Installation Makes More Sense
Full-width carpet — wall to wall across the staircase — and stair runners are not just different aesthetic choices. They differ in how they are installed, how they wear, and what they reveal about the staircase itself.
A stair runner leaves a border of exposed stair tread on each side — typically three to four inches per side on a standard 36-inch staircase. If the stair wood is finished and attractive, a runner frames it deliberately; if the stair wood is unfinished or stained, the exposed border becomes a liability. Runners require edge binding before installation to prevent the sides from fraying, and they are secured with tack strips and staples or with decorative runner rods at each riser — the latter being more traditional in appearance and easier to adjust or replace without reinstallation.
Full-width carpet conceals the stair structure entirely, is simpler to install for the cap and band method (no edge binding required if the edge tucks into the side wall), and wears evenly across its full width. In households where children or elderly family members use the stairs, the full-width installation removes any transition edge that could catch a foot.
For households weighing flooring decisions across multiple surfaces, it is worth thinking about how the staircase material connects visually to the surrounding floors. The comparison of carpet versus wood flooring is useful context for this decision, particularly where the staircase transitions to hardwood on adjacent levels.
Carpet Padding on Stairs: What the Spec Numbers Actually Mean
Carpet padding is specified by density (pounds per cubic foot) and thickness (inches). For stairs, both numbers matter differently than they do for flat floors.
Thickness should be a maximum of 3/8 inch. This is not a loose guideline — it is an upper bound that exists because of the geometry of the stair nose. Every additional fraction of an inch of padding thickness increases the amount the carpet must flex over the nosing, which increases the stress on the carpet backing and pile fibers at that point. A thinner pad that is properly dense provides better support than a thicker pad that is soft.
Density should be at the high end of the available range. A density of 8 pounds per cubic foot is appropriate for stair padding; lower-density foams compress too readily under impact and lose their support properties within the first year on a busy staircase. Felt padding — firm, dense, and thin — is often the best-performing material for stair applications and avoids the foam compression problem entirely.
The padding must be cut and stapled to the tread only, never the riser. Padding on the riser face adds bulk at the most critical fold point in the installation and prevents the carpet from seating cleanly against the tack strip at the riser base.
How Long Does Stair Carpet Last and What Determines the Timeline
A staircase carpeted with nylon fiber, appropriate pile height, correctly installed padding, and proper tack strip fastening will typically hold its appearance for seven to ten years in a standard residential household. Lower-quality installations with incorrect fiber selection or padding errors may show significant wear within three to five years.
The nosing area of each tread always wears first — this is where foot contact concentrates at the point of step, and where the carpet backing is bent repeatedly. In a cap and band installation, this wear is somewhat distributed because the carpet is pulled tightly over the nosing rather than loosely folded over it. In a waterfall installation, the fold point at the nose can accelerate if the carpet pile is too high or if padding was not cut to the correct thickness.
Traffic volume, household composition (pets, children, footwear habits), and the fiber type all feed into the actual timeline. A nylon installation in a home with two adults and no pets will outlast the same installation in a home with dogs by a meaningful margin — not because carpet cannot handle pets, but because claws and repeated traffic compound wear in the nosing zone faster than foot traffic alone.
If pets are a primary consideration in your flooring decisions, the question of which carpet holds up best in pet households addresses fiber choices and construction types that hold up specifically under pet use.
Maintenance extends service life significantly. Weekly vacuuming — run the vacuum attachment from bottom to top along each tread, lifting the pile in the direction opposite to foot traffic — keeps grit from settling into the backing and grinding fibers from below. Annual professional cleaning removes embedded particulate that vacuuming alone cannot reach. Checking tack strip edges annually for loosening and re-stapling where necessary prevents the progressive lift that begins at the sides and works inward.
Finishing Details That Separate a Professional Result from a DIY One
The difference between a carpet installation that looks professionally done and one that looks like a weekend project is almost entirely in the finishing details — the tuck quality, the transition handling, and the edge treatment at the sides and base of the staircase.
The crease at each tread-riser junction should be sharp and fully seated. When you run a finger along the corner, you should feel the carpet firmly pressed into the angle with no lift or gap. A loose crease is the first place the carpet will shift underfoot over time, and it is visible from the bottom of the staircase looking up.
The bottom riser finish requires a proper transition to the floor material at the base of the stairs. Whether that is hardwood, tile, or vinyl, the transition strip must be appropriate for the floor type and must sit flush. An exposed raw carpet edge tucked under a poorly fitted threshold strip will fray and eventually pull loose. If the staircase connects the floor levels in an open-plan home, the transition detail is also visible as a design element — it is worth selecting a transition strip that complements both the carpet and the adjoining floor.
At the side edges, the carpet should be tucked cleanly into the gap between the tread and the wall or baseboard. Where the staircase has an open side — no wall, just a baluster rail — the carpet edge must be bound before installation. A bound edge is folded back and stitched, which creates a finished selvage that will not fray regardless of what happens to the backing over time.
For households in the process of replacing flooring across multiple rooms and surfaces, it is worth understanding how the different types of carpet installation connect to the stair-specific choices described here — the substrate preparation logic and tack strip principles carry over across surfaces.
When Professional Installation Makes More Sense Than DIY
There is a version of this project that is genuinely within the range of a careful, experienced DIYer with proper tools. Straight staircases with consistent geometry, the waterfall method, and a single piece of carpet are manageable with preparation and patience.
There is also a version that is not. Curved staircases require carpet pieces to be cut and fit individually around geometrically complex nosings — the cuts are not rectangular, the angles are not uniform, and achieving a professional result requires experience that is difficult to acquire on a single project. Winding or L-shaped staircases with landing platforms require multiple pieces of carpet that must be seamed, and stair seaming is among the more difficult skills in carpet installation to execute cleanly.
Open risers — stairs without a vertical face, where the underside of each tread is visible — require the cap and band method with precisely finished edges on the tread piece that wraps under the nosing, since the underside is visible. This is not forgiving work.
And any staircase where padding needs to be replaced, where structural issues need to be addressed, or where the existing tack strips are embedded in concrete rather than wood, benefits significantly from professional handling. The cost of professional installation on a standard 12- to 14-step staircase is genuinely recoverable if it means the installation holds correctly for its full service life rather than requiring replacement at year three or four.
Our carpet flooring services cover stair installations across San Diego — if you are unsure whether your specific staircase is appropriate for DIY installation, that assessment is part of what a professional consultation provides before any work begins.
Frequently Asked Questions
Do you start carpeting stairs from the top or the bottom?
Always from the top, working downward. This gives you proper tension control as you work and prevents the carpet from bunching at the upper steps. It also means any error in tension is corrected on subsequent steps rather than compounding toward the top where correction is most difficult.
Does carpet padding go on the riser as well as the tread?
No. Padding should cover only the tread surface, extending slightly over the nosing edge and down the riser face by two to three inches. Full riser padding adds bulk at the fold point and prevents the carpet from seating cleanly against the tack strip at the riser base.
Can you install carpet over existing carpet on stairs?
This is not recommended and should not be done. Existing carpet adds height and instability, prevents proper tack strip engagement, and creates a surface that is neither predictably flat nor dimensionally stable. The existing installation must be fully removed before new carpet is laid. The article on laying carpet over existing flooring materials covers the cases where overlay is feasible and when it is not — stairs are consistently in the “not” category.
What is the best way to prevent stair carpet from moving?
Proper tack strip installation is the primary mechanism — strips must be fully secured, the teeth must be sharp and pointing toward the crease, and the carpet must be driven onto the teeth with a knee kicker rather than simply pressed down by hand. Supplementary stapling at the riser base and at the top of each riser, as used in the cap and band method, provides additional hold. Carpet that continues to shift after correct tack strip installation usually has padding that is too thick or strips that have loosened at the substrate.
How much carpet do I need for a standard staircase?
For a standard staircase, calculate approximately three to four square feet per step (tread depth plus riser height, multiplied by stair width). A 13-step staircase with 36-inch-wide treads will typically require between 40 and 55 square feet of carpet, depending on tread depth. Add 10 percent for waste and cutting margin. For the cap and band method, calculate tread caps and riser bands separately to account for the different cut dimensions and avoid underordering.
