Fitting acoustic slat panels is a realistic DIY job with basic tools and a bit of patience. A wall around 3 metres wide takes two people a few hours. This guide covers how to fix 600 x 2400 mm felt-backed panels to a wall, what you need and the mistakes we see most often.
What you need
- Tape measure, pencil and spirit level (a laser level speeds things up)
- Fine-tooth saw or jigsaw, plus a sharp utility knife for the felt
- Caulking gun and a suitable panel adhesive or neutral-cure silicone
- Screws, wall plugs and a drill where extra fixing is needed
- Masking tape to protect the face of the panel when cutting
Preparing the wall
The surface must be flat, clean and dry. Flaking paint, dust and grease all weaken the bond. Let fresh plaster dry out fully before panelling over it. Check the wall with a long straight edge; if it bows by more than a few millimetres, screw thin timber battens to the wall and fix the panels to the battens for a straighter finish.
Unpack the panels and leave them in the room for 24 hours before fitting so the MDF slats adjust to the temperature and humidity.
How to install acoustic slat panels, step by step
- Measure and plan. Divide the wall width by the panel width of 600 mm. Consider starting from the centre of the wall so the cut pieces at each end are the same width.
- Mark a plumb line. Use a spirit level to mark the edge of the first panel. If the first panel is truly vertical, the rest will follow.
- Apply the adhesive. Run vertical beads or a zigzag of adhesive on the felt, lined up behind the slats, keeping 30 to 40 mm in from the edges.
- Press the panel on. Line the panel up with your mark and press firmly along its full length. Hold it for a few seconds and prop the top if needed.
- Add screws if required. On ceilings or weaker surfaces such as plasterboard, drive black screws through the felt between the slats for extra security. Black screw heads disappear into the felt.
- Fit the next panel. Panels butt together along the felt edge. Take care at the joint so the slat spacing stays consistent across the wall.
- Cut to size. Cut the slats with a fine-tooth saw and trim the felt with a knife. Put the cut edge into the corner or against the ceiling.
Cutting around sockets and switches
Turn the power off and remove the faceplate. Transfer the position of the back box onto the panel, cut the opening with a jigsaw and refit the faceplate using a spacer or extension box to allow for the panel depth. If the socket falls between two slats, you may only need to cut the felt.
Common installation mistakes
- Fitting the first panel without a level, which throws every panel after it out of line.
- Running adhesive right to the edges, so it squeezes out and shows between the slats.
- Using solvent-based adhesive on painted or PVC surfaces. Our adhesive guide explains which product to use where.
- Fitting panels straight from a cold van without letting them acclimatise.
Adhesive, screws or both?
Each method has its place. Adhesive alone gives the cleanest finish on flat, sound walls, with no fixings to see. Screws alone suit installations that may need to come down later, or surfaces adhesive will not grip, and black screws in the felt gaps are practically invisible. Using both together is the most secure approach: the adhesive holds the panel across its whole area and the screws keep it in place while the adhesive cures. We recommend the combined method for ceilings, tall walls and commercial spaces.
What if the wall is not flat?
Walls in older buildings often bow by a few centimetres. Gluing panels straight to them makes the slats ripple. The answer is a batten frame: screw horizontal timber battens to the wall at 400 to 600 mm centres, pack out the low spots with thin shims until every batten sits in the same plane, then screw the panels to the battens. This also leaves a small air gap behind the panel, which slightly improves acoustic performance and gives you a route for cables.
Corners and finishing details
At internal corners, simply butt the two panels together so the cut edge sits inside the corner out of sight. At external corners the cut edge is exposed, so a corner trim gives a much cleaner finish. Cutting the panel 2 to 3 mm short of the ceiling makes fitting easier and allows for seasonal movement. If there is a skirting board, either start the panels above it, or remove the skirting, run the panels down to the floor and refit the skirting in front.
Looking after the panels
Felt collects some dust, but upkeep is easy. A dry brush or the brush head of a vacuum once a week keeps the gaps clean, and the slats can be wiped with a slightly damp microfibre cloth. Do not soak the felt and avoid abrasive cleaners.
How many people and how long?
A single 600 x 2400 mm panel is light, but its length makes it awkward to line up alone. We recommend two people: one holds and positions the panel while the other checks the level and presses it home. An average living room wall, around 3 metres wide at standard ceiling height, takes five panels and three to four hours for two people including measuring, cutting and fixing. Sockets, switches and corners are what add time. Let the adhesive cure for 24 hours before hanging anything heavy, so fix shelves or a TV bracket the following day.
Frequently asked questions
Can acoustic panels go on a ceiling?
Yes, but never rely on adhesive alone overhead. Screw the panels into the ceiling joists or into battens.
Can I fit acoustic panels to plasterboard?
Yes. Use adhesive and add screws into the studs behind the plasterboard for the most secure fixing.
Do I need a professional installer?
For a single feature wall, usually not. For larger commercial projects, get in touch about installation support. For help choosing a panel, read our slat wall panel guide.
