Preparation and positioning
Before fitting, ensure your runner is properly tensioned and fixed at the tread/riser junction. Position the brackets on both sides, ensuring they are perfectly level across the step. Pre-drill the pilot holes for your screws to avoid splitting the wood of the stair tread.
How much runner do I need?
For a 13-step flight (10 in / 25 cm treads, 7.5 in / 19 cm risers), you will need 23.5 ft (7.09 m) of runner. Once the runner is secure, the rods are placed into the brackets—do not tighten until you are sure the rod is centered.
| Measurement | US (in/ft) | UK (cm/m) |
|---|---|---|
| Tread run | 10 in | 25 cm |
| Riser height | 7.5 in | 19 cm |
| Per-step total | 18.25 in | 45.9 cm |
| Total (13 steps) | 19.77 ft | 5.97 m |
| With 8% waste | 23.5 ft | 7.09 m |
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 calculatorFitting tip
Use a spirit level to ensure the first rod is perfect; this serves as your guide for the remaining steps.
- Measure twice, drill once
- Use a spirit level for alignment
- Pre-drill holes for screws
- Ensure consistent bracket placement
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.
Frequently asked questions
Do I need special tools to fit rods?
A screwdriver, drill, spirit level, and tape measure are all you really need.
Should the rods be tight against the runner?
Yes, they should sit snugly over the runner to hold it firmly in place against the tread.
Can I fit them on carpeted stairs without a runner?
Stair rods are specifically designed to be used with a central stair runner.
What if I hit a screw in the tread?
Ensure you move the bracket slightly to avoid any hidden nails or previous fixing points.
Is fitting stair rods a one-person job?
Yes, it is manageable for one person, though an extra pair of hands can help with holding the rod in place while marking.
How deep should the screws go?
Deep enough to secure the bracket firmly into the solid wood of the tread—usually 0.5 to 1 inch.
Can I use a power screwdriver?
Yes, but be careful not to over-tighten, which can damage the bracket or the wood.
What if my staircase is painted?
Use masking tape over the area before marking to prevent the paint from chipping when drilling.
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.
Use the stair runner calculator to plan your installationEvery 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.