What Screws for Curtain Poles? A UK Fixing Guide

A curtain pole can look perfectly fitted until the first pair of heavy, lined curtains is drawn across it. The question of what screws for curtain poles is really a question about the wall behind the bracket, the weight of the curtains and the condition of the fixing point. Choosing the right screw and wall plug prevents loose brackets, cracked plaster and the frustrating job of putting it all back up again.

What screws for curtain poles should you use?

For most curtain pole brackets, use countersunk screws that fit the bracket holes neatly and are long enough to reach a solid fixing. A 4mm or 5mm diameter screw is commonly suitable for domestic brackets, while the length depends on the wall material. In a solid brick or block wall, 50mm to 70mm screws with matching wall plugs are often a sensible starting point. For timber, use wood screws long enough to bite well into the frame or lintel.

Do not choose screws by length alone. A long screw fitted into weak plasterboard without the right anchor may still pull free. Equally, an oversized screw can split timber, damage a plastic wall plug or prevent the bracket sitting flat against the wall.

Most pole bracket packs state a recommended screw size. Follow this where possible, but check that the supplied fixings suit your wall. Universal fixings are not always ideal for every surface, particularly with wide or heavy curtains.

Match the fixing to the wall

The wall is the deciding factor. Before drilling, make a small check with a drill bit or bradawl in a discreet spot near the proposed bracket position. You are looking for a solid material, a void, timber, or plasterboard. Never drill blindly where cables or pipes may run.

| Wall type | Suitable fixing approach | Typical use | |—|—|—| | Brick or concrete block | Multi-purpose or nylon wall plugs with 4mm or 5mm screws | Most secure option for heavy poles and curtains | | Solid timber | Woodscrews driven directly into sound timber | Useful above windows where a timber lintel is present | | Plasterboard over a void | Proper plasterboard fixings, such as self-drilling anchors or toggle fixings | Best for lighter poles unless a stud can be found | | Plasterboard over masonry | Longer screws and plugs that pass through the board into masonry | Strong option where there is little gap behind the board |

For brick, blockwork and concrete, drill the hole to the diameter marked on the wall plug packet. Push the plug in flush with the surface, position the bracket, then drive in the screw until firm. The screw should expand the plug inside the wall, not simply spin in it.

For timber, pilot holes make the job easier and reduce the risk of splitting. A screw around 4mm to 5mm wide is usually appropriate for a standard bracket, but the timber must be sound. Old window frames, thin trim and decorative pelmets may not offer enough depth for a reliable fixing.

Curtain pole screws for plasterboard

Plasterboard is where curtain pole fixings most often fail. The board itself is not designed to take a high pulling load, and every time curtains are opened, the brackets experience movement. Standard brown or red wall plugs pushed into plasterboard alone are not a dependable solution for a heavy pole.

The best answer is to fix into a timber stud, where one is available. Use a stud finder, or carefully test the area, then secure the bracket with suitable woodscrews that penetrate the stud well. Bear in mind that studs may not line up exactly with the ideal bracket position, so check pole clearance and curtain coverage before committing.

If a stud is not in the right place, use a fixing made specifically for plasterboard. Self-drilling plasterboard anchors suit lighter curtains and smaller poles. Metal cavity fixings and toggle fixings spread the load behind the board and are better for heavier curtains, provided there is a clear cavity behind it. Follow the fixing manufacturer’s load guidance and remember that quoted ratings can reduce when force is applied outward from the wall.

Where plasterboard is fitted directly over blockwork or brick, a longer screw and plug reaching the masonry can be far stronger. Measure the board thickness and any gap first. The fixing needs adequate depth in the masonry, rather than just a token amount beyond the plasterboard.

Avoid fixing only into the top layer of plaster

Older homes may have plaster over lath, plaster over masonry or uneven walls that make the surface difficult to read. If the drill suddenly breaks through after a shallow depth, stop and assess what is behind it. A bracket held only by brittle plaster will loosen, even if it initially feels tight.

In these situations, longer fixings into the structural wall, a timber batten secured across several solid points, or a different bracket position may be the practical answer. The neatest-looking location is not always the strongest one.

Choose screw length for the bracket and wall plug

A useful way to estimate screw length is to add the thickness of the bracket, the thickness of any plaster or plasterboard, and the depth needed in the plug or timber. For a bracket on a solid wall, a 50mm screw is often enough for a standard installation. If there is thick plaster, dot-and-dab plasterboard or a deep bracket base, 60mm or 70mm may be needed.

The screw should be long enough to pass through the bracket and fully engage with the wall plug. It should not be so long that it risks reaching hidden services. Electrical cables commonly run vertically and horizontally from sockets and switches, while pipes may be present around radiators, bathrooms and kitchens. Use a cable and pipe detector before drilling, especially close to these areas.

Screw heads matter too. Most curtain pole brackets are designed for countersunk heads, which sit neatly in the hole. Pan-head screws can be suitable if the bracket allows them, but a proud head may stop the bracket sitting flush or interfere with the pole fitting. Stainless steel screws are useful in damp areas, although standard zinc-plated screws are normally fine for living rooms and bedrooms.

Consider the weight, width and use of the curtains

A lightweight café curtain on a short pole puts little strain on the wall. Full-length thermal curtains, blackout linings and wide eyelet curtains are another matter. The wider the pole, the more leverage acts on the end brackets. A centre support bracket is essential on longer poles and should be fixed just as carefully as the end brackets.

For heavy curtains, do not rely on two small screws per bracket if the bracket has three or four fixing holes. Use every hole intended by the manufacturer, with matching fixings. This spreads the load and helps prevent the bracket twisting when the curtains are pulled.

It also helps to check the pole before fitting. A solid metal pole, wooden pole and extendable pole can all have different weight limits. If the pole is near its maximum span, adding heavy curtains may cause sagging even when the screws are secure. A stronger centre bracket or an additional support may be needed.

A practical fitting check before you hang the curtains

Fit the brackets first, then place the empty pole in position and apply gentle downward pressure by hand. Look for movement at each bracket, screws turning in their holes or plaster cracking around the fixing. Correct any problem at this stage rather than hoping the curtains will somehow stabilise it.

Check that the pole is level, the finials clear nearby walls and the curtains will sit beyond the window recess when open. This is also the time to make sure the brackets have enough clearance for the curtain heading. Eyelet curtains, pencil pleat curtains and deep blackout linings all need slightly different space around the pole.

Keep a few spare screws, plugs and suitable drill bits in the basket when buying curtain pole fittings. They are inexpensive essentials, and having the right size to hand can save a second trip when a supplied fixing proves unsuitable for the wall.

A secure curtain pole is not about using the biggest screw available. It is about matching the screw, plug and bracket to the wall, then giving every fixing point a proper hold. Take a few minutes to identify the surface before drilling and your curtains should open and close smoothly for years.