Why the top of the stairs is the hardest joint on the job
Every other joint on a staircase runs across a step, hidden in the shadow of the riser above it. The top transition is different: it sits on a flat, well-lit floor where your eye meets it head-on, at exactly the point most people pause before starting down. A poor seam, a proud gripper edge, or a colour mismatch is more visible here than anywhere else on the flight, which is why fitters spend more time on this one joint than on the whole rest of the run.
It also carries more structural load than it looks like it should. The top nosing takes a foot planting down and turning at the same time, several times a day, and the carpet there has to grip without lifting, fray or curl. Get the fixing wrong and this is the first place a runner comes loose.
The three standard ways to finish the transition
| Method | How it works | Best for |
|---|---|---|
| Runner continues as a landing rug | The same carpet is cut and bound into an L or rectangle shape on the landing | Runner and landing meant to look like one piece |
| Seamed join to fitted landing carpet | A separate landing carpet is fitted and the runner is seamed to it in the angle at the top riser | Landing carpet already exists or differs in style |
| Transition bar or threshold strip | A metal, brass or timber bar caps both edges where runner meets a hard floor or different carpet | Landing is wood, tile, or a different carpet colour entirely |
Measuring for the transition
Get the flight length right first — this is exactly the job the stair runner calculator is built for, converting your tread depth, riser height and nosing wrap into a total length before you think about the landing at all. Once you know how much runner reaches the top step, measure the landing separately, because the two areas are almost always priced and cut differently even when the carpet is identical.
For the landing itself, measure wall to wall in both directions if the runner will spread out into a full rug shape, and measure a simple width by depth rectangle if it will stay the same width as the stairs and just run a short distance onto the flat. Add at least 10 cm (4 in) of extra length at the join end so the fitter has real material to work with rather than trimming to a hairline.
Order the landing piece with the stairs, not separately
Dye lots vary between production runs, even for the exact same product code. If the landing carpet is ordered weeks after the runner, from a different batch, the colour can be visibly different once both pieces are down under the same light. Order both in one transaction whenever the design calls for a colour match.
Fitting order and where the seam actually sits
- Fit the landing gripper first, set back from the top nosing by the thickness of the runner underlay so the two surfaces finish level.
- Fit the runner up the flight as normal, stopping one tread short of the top nosing.
- Lay the last piece of runner over the top nosing and down into the angle where the top riser meets the landing floor — this angle is the natural hiding place for a seam.
- Butt or seam the landing carpet or rug piece into that same angle, using a seaming iron and tape for carpet, or a bound edge overlap for a rug-style finish.
- Stretch the landing piece outward from the seam using a power stretcher so the joint does not creep open over the following weeks.
- Recheck the seam after 24 hours; carpet relaxes slightly once fitted and a fresh seam can show a small gap that needs a final press.
When the landing turns instead of running straight
Not every top landing is a flat rectangle. Half landings, winder turns and L-shaped hallways all change the transition detail because the runner is now also changing direction, not just changing surface. In these cases the seam is usually placed on the flattest, most square part of the landing rather than exactly at the top nosing, because a seam across a curve or a mitred corner is far harder to keep flat. If your staircase has any turn near the top, work out the true run first using a stair runner length calculator that accounts for winders, then decide where the seam can sit without crossing an angle.
Gripper, tack strip and code considerations
In the US, IRC R311.7 governs stair geometry but does not dictate carpet fixing methods directly; the practical concern is keeping the top landing's finished floor height consistent with the top riser so the last step is not taller or shorter than the rest — a common inspection fail when a thick landing carpet and pad are added after the stairs were built. In the UK, Approved Document K sets similar expectations around consistent going and rise, and fitters routinely shim or trim underlay at the top step specifically to keep that last riser within tolerance.
Use tack strip (gripper) rather than adhesive at this transition wherever possible. Gripper lets a stretched carpet flex slightly with foot traffic and temperature changes without pulling the seam; adhesive locks the seam rigid and any subsequent shrinkage shows as a visible gap rather than a smooth take-up.
Matching an existing landing carpet to a new runner
If the landing is already carpeted and only the stairs are being redone, do not try to match the pile exactly unless the landing carpet is recent and from a supplier who can confirm the same batch. A near-miss match under stair lighting looks worse than a deliberate contrast. The two most reliable options are choosing a runner in a complementary tone that reads as intentionally different, or replacing a short run of landing carpet immediately around the top step with the new runner material so the whole visible area at eye level is one consistent piece.
Cost-wise, expect the extra landing piece to add a modest amount to the job rather than double it, since it is usually a small area compared with the full flight. In the US that is commonly an extra $80-220 in material and $60-150 in labour for a typical landing; in the UK, budget roughly GBP 60-170 in material and GBP 50-120 in labour, depending on landing size and whether a seam or a full rug shape is being cut.
Know your numbers in 30 seconds
Enter your step count, tread depth and riser height — the stair runner calculator gives you the exact length to order, in metres and feet, with waste included.
Open the stair runner calculatorStill 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.
Frequently asked questions
Should the runner and landing carpet be exactly the same carpet?
It is the safest way to guarantee a match, ordered together from the same batch. If you are matching to an existing landing carpet instead, expect a slight difference under stair lighting even with the same product code, since dye lots vary between production runs over time.
Where should the seam between runner and landing be hidden?
The angle where the top riser meets the landing floor is the standard hiding place, because shadow and the change of plane both help disguise a seam line there. Avoid placing a seam across a curve, mitred corner or winder turn where it is far more visible and harder to keep flat.
Can I use a transition bar instead of seaming the carpets together?
Yes, a metal, brass or timber transition bar works well where the landing is a hard floor or a noticeably different carpet, capping both raw edges neatly. It is a faster, cheaper fix than seaming but reads as a visible line rather than a continuous surface.
Does the top step need to match the height of the others exactly?
Yes. Both IRC R311.7 in the US and Approved Document K in the UK expect consistent rise between steps, and a thick landing pad added on top of the stairs can make the last step noticeably different in height, which is a common and avoidable safety issue.
How much extra carpet should I order for a landing transition?
Measure the landing area separately from the flight and add roughly 10 cm (4 in) of slack at the seam end so the fitter has real material to work into the joint rather than trimming to an exact edge, which almost always shows.
Does a runner that continues onto the landing as a rug shape cost much more?
It adds a modest amount rather than doubling the job, typically an extra $80-220 in the US or GBP 60-170 in the UK for material, plus a similar range in labour, depending on the landing's size and shape.
What is the most common mistake at this transition?
Ordering the landing piece separately, weeks after the stair runner, from what looks like the same product. Dye lot variation between batches is the single biggest cause of a visible colour mismatch at the top of the stairs.
Know your numbers in 30 seconds
Enter your step count, tread depth and riser height — the stair runner calculator gives you the exact length to order, in metres and feet, with waste included.
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Every guide is written from hands-on measuring and fitting experience, checked against the calculator’s own maths, and re-reviewed whenever prices or methods change. Read our editorial standards.