How to Reduce Creaks in Wooden Stair Treads

Creaking stairs are one of those sounds that seem to amplify at night, especially in older UK homes. The good news is that most creaks are not a sign of imminent collapse. They usually come from movement between wooden components: a tread rubbing against a riser, a nail that has lost its grip, or a stringer that has dried out and shrunk. With a few basic tools and a little patience, you can quieten most staircases without calling in a specialist.

Why Wooden Stairs Creak

Wood is a natural material that responds to changes in temperature and humidity. During winter, central heating dries the air and the wood shrinks slightly. In summer, it swells. Over years, this cycle loosens nails and opens joints. A creak is simply friction: two pieces of wood moving against each other, or a fixing that has worked loose. The most common culprits are treads that have separated from risers, risers that rub against treads, and treads that have lifted slightly from the stringers. Sometimes the problem is a single loose tread; other times, several joints have weakened.

Begin with a Careful Inspection

Before you reach for a screwdriver, find out exactly where the noise comes from. Walk up and down the stairs slowly, pressing on each tread with your full weight. Ask someone to listen from below or from the side. Mark any noisy treads with a small piece of masking tape. If you have access under the stairs—perhaps through a cupboard or by removing a section of plasterboard—inspect the underside. Look for gaps between treads and risers, rusted or protruding nails, and any movement in the stringers. A torch and a mirror can help you see into tight corners. Note whether the creak happens when you step on the front, middle, or back of the tread. That tells you which joint is moving.

Tighten and Replace Loose Fixings

Many creaks disappear once you tighten the original fixings. Old staircases were often built with cut nails, which lose their grip as the wood dries. Where possible, replace them with screws. A 4.5mm by 75mm wood screw driven at a slight angle through the tread into the riser will pull the joint tight. Always drill a pilot hole first to avoid splitting the wood, especially near the ends of treads. If you can access the underside, drive screws up through the riser into the tread. For a stronger repair, apply a bead of PVA wood glue to the joint before screwing. Wipe away any excess glue with a damp cloth. Countersink the screw heads and fill the holes with matching wood filler. Do not over-tighten—if you crush the wood fibres, the fixing will not hold.

Add Support to Treads and Risers

If tightening alone does not stop the creak, add extra support. Cut small blocks of softwood, about 50mm by 50mm, and glue and screw them into the internal corners where the tread meets the riser. These blocks act as braces, preventing movement. For wider staircases, a centre support—a length of timber fixed to the underside of the treads and supported by a vertical post—can make a huge difference. Where a tread has lifted from the stringer, tap a hardwood or plastic shim into the gap, then trim it flush and secure it with glue. Construction adhesive is excellent for this job because it remains slightly flexible and fills small gaps. If you have open stairs with visible stringers, you can also add decorative metal brackets for extra rigidity.

Quietening Risers and Stringers

Risers are often the hidden source of noise. A riser that has come unglued from the tread above or the tread below will rub as you walk. From above, you can often squeeze a little wood glue into the joint and then screw through the riser into the tread. From below, if accessible, run a bead of glue along the joint and add a screw. For stringers, check the wedges that lock the treads into the housing. Over time, these wedges can work loose. Tap them gently with a hammer and a block of wood. If they are still loose, remove them, apply glue, and refit. Where a stringer meets a newel post, a loose joint can cause a hollow creak. Tighten any bolts or screws, or add a metal plate across the joint for reinforcement.

Prevention and Finishing Touches

Once you have silenced the creaks, take steps to stop them returning. Keep indoor humidity between 40% and 60% if possible. In winter, a dehumidifier or a bowl of water near a radiator can help prevent excessive drying. Avoid over-driving screws—snug is enough. After a few weeks, walk the stairs again and re-tighten any fixings that have settled. If a creak persists, it may be coming from under the floorboards at the top or bottom of the stairs, so check the landing and the floor joists. Finally, a light dusting of talcum powder or a rub of candle wax between rubbing wooden surfaces can reduce friction, but this is a temporary measure. Proper fixing is always the lasting answer. With a little effort, your staircase can be as quiet as it was when it was first built.