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Many homes have a handrail on only one side of the stairs. That works for someone who can use either hand equally, but it is a real problem for anyone with a weaker side, a stiff shoulder, or a habit of holding the rail with the same hand going up and coming down. On the way down, the single rail is on the "wrong" side. A second handrail gives a hand-hold on both sides in both directions, and lets someone use both hands at once when they need extra support. It is one of the most useful changes for stairs in an aging-in-place home.
Why a second rail helps
- Strong-hand support in both directions. Someone with a weak left hand can hold the right-side rail going up and the other rail coming down.
- Two-handed support. On a steep or narrow flight, holding both rails gives much more stability.
- Carrying items. Even with one hand busy, there is always a rail on the free side.
- Visitors and helpers. A helper can walk beside the user while both hold a rail.
Where the second rail goes
Most second rails mount on the wall opposite the existing rail. If one side is open (a balustrade with spindles) and the other is a wall, the existing rail is often on the balustrade and the new rail goes on the wall. If both sides are walls, the second rail simply mirrors the first.
Height, length and grip
Height
Many building codes in the US set handrail height at 34 to 38 inches above the step nosing, measured vertically. Match the existing rail if it is within that range, so both hands are at the same height. If the user is very short or tall, an occupational therapist can advise.
Length
The rail should run the full length of the flight, from the top step to the bottom step. Extending it a little past the top and bottom gives something to hold while stepping on and off, which is when many falls happen.
Grip
A round rail about 1.25 to 2 inches across is easy for most hands to wrap around. Wide, flat decorative rails are harder to grip. There should be about 1.5 inches of clearance between the rail and the wall, so knuckles do not scrape.
Mounting
A handrail has to hold a person's full weight if they stumble. Fix brackets into wall studs or solid blocking, not into drywall alone. Use the brackets and screws the rail maker specifies, typically every 4 feet or less. On plaster or masonry walls, use fixings suited to the material. If you are not confident, a handyperson or carpenter can install a rail in a few hours.
Rails to consider
This 5-foot wall-mounted metal handrail suits a short flight or a landing, and its listing states a 500 lb load capacity.
5 ft Wall-Mounted Metal Stair Handrail (500 lb)
5 ft iron handrail; wall mounted; rust-resistant finish; listing states 500 lb load capacity
Pros
- Adds a second rail to the open side or wall side
- Simple wall brackets
Cons
- Brackets must go into studs
- Industrial look is not for every home
For one to three outdoor steps, the Metty rail has an angle that adjusts to the step height.
Metty Hand Rail for Outdoor Steps, 2-step kit
Iron handrail for 1–3 outdoor steps; adjustable angle to step height; for rain and snow per listing
Pros
- Fits short porch steps
- Adjustable
Cons
- Needs solid concrete or wood to bolt into
- Short steps only
| Product | Key specs | Link |
|---|---|---|
| 5 ft Wall-Mounted Metal Stair Handrail (500 lb) | 5 ft iron handrail; wall mounted; rust-resistant finish; listing states 500 lb load capacity | Check price on Amazon (opens in a new tab) |
| Metty Hand Rail for Outdoor Steps, 2-step kit | Iron handrail for 1–3 outdoor steps; adjustable angle to step height; for rain and snow per listing | Check price on Amazon (opens in a new tab) |
Specs are from manufacturer and retailer listings and can change between versions; check the listing before you buy. We don't show prices because they change often; the button shows the current price on Amazon.
For longer indoor flights, many hardware stores sell wood or metal rail by the foot with matching brackets, which a carpenter can cut to length.
Outdoor steps
Porch and garden steps often have no rail at all. Even two or three steps benefit from a rail. Outdoor rails must resist rust and be anchored into concrete, masonry or solid posts. Pair them with step lights; see our guide to outdoor motion step lights.
Pair rails with grip and light
A rail helps balance; it does not stop a foot sliding off a slippery tread. Add non-slip treads and good lighting. Our guide to non-slip stair treads for wood stairs covers the treads.
Building codes and rentals
Handrail rules vary by location. Some codes require rails on both sides of wider stairs. If you are remodeling, check with your local building department. In a rental, ask the landlord in writing; many will agree to a second rail, especially for a tenant with a mobility need. In the US, tenants with disabilities may have rights to reasonable modifications.
Checking an existing rail
While you are adding a second rail, check the first one. Grab it and pull firmly in every direction. If it moves, flexes or creaks, tighten or re-fix the brackets into studs. Look for loose end caps, splinters on wooden rails and sharp edges on metal ones. A rail that stops a few steps short of the top or bottom can be extended.
Making the most of two rails
Show the user how to use both rails on a steep flight, sliding hands forward one at a time. Encourage them to go down one step at a time, leading with the stronger leg when going up and the weaker leg when going down, if a therapist has suggested that. Keep the stairs clear of items waiting to go up or down, so both hands stay free.
Wood or metal?
Wood rails feel warm to the touch and suit most interiors; they are easy to cut and fit with standard brackets. Metal rails are slimmer and very strong, and powder-coated or stainless finishes resist wear. Outdoors, choose rust-resistant metal or treated wood rated for exterior use. Whatever the material, the grip shape and the fixings matter far more than the look. A contrasting color against the wall also makes the rail easier to find for someone with low vision.
If the rail ends in open air, choose an end that returns to the wall or curves down, so sleeves and bag straps cannot catch on it.
Once both rails are in, check them every few months, the same way you would check grab bars in the bathroom.
FAQ
Do stairs need a handrail on both sides?
Many building codes require only one for narrow residential stairs, but a second rail is a widely recommended safety upgrade for older adults.
What height should a stair handrail be?
Typically 34 to 38 inches above the step nosing in many US codes. Match the existing rail where possible.
Can I install a handrail on drywall?
Not with drywall anchors alone. Brackets must go into studs or solid blocking.
How long should a handrail be?
The full length of the stairs, ideally extending slightly past the top and bottom steps.
Can a renter add a second handrail?
Ask the landlord in writing. Many will agree, and tenants with disabilities may have legal rights to reasonable modifications.