A clicking or snapping sound underfoot is one of the most common complaints with floating floors — and the good news is it's usually fixable without replacing the whole floor. The noise almost always comes down to movement: either between the planks themselves, between the floor and the subfloor, or because the floor has no room to expand. Working through the causes systematically will help you track down the culprit and sort it out.
Why Does a Floating Floor Click?
Floating floors — whether laminate, luxury vinyl plank (LVP), or engineered timber — are not glued or nailed down. They sit freely on the subfloor and are held together by a click-lock or tongue-and-groove joint system. This freedom of movement is by design, but it also means a few things can go wrong:
- Insufficient expansion gap – Floating floors need a gap (typically 8–12 mm) around all fixed objects including walls, door frames, cabinetry, and pipes. If the floor is butting up against something, it can't expand and contract with temperature and humidity changes, causing the planks to buckle slightly and rub against each other.
- Uneven or hollow subfloor – If the subfloor dips or humps, planks can flex up and down as you walk over them, causing the joints to click.
- Debris under the floor – Grit, dust, or offcuts left under the floor during installation can create pressure points that cause clicking.
- Damaged or poorly engaged joints – A plank that wasn't clicked in fully during installation, or one that has been knocked loose, will move and click underfoot.
- Insufficient or wrong underlay – The underlay cushions the floor and helps it sit flat. If it's too thin, missing in spots, or the wrong type for your floor system, clicking can result.
Step 1 – Check the Expansion Gaps
This is the most common cause and the easiest to check. Look around the perimeter of the room and around any fixed objects (island benches, hearths, door frames). You should see a consistent gap of at least 8 mm — often covered by skirting boards or scotia moulding.
If the skirting is nailed directly to the floor rather than the wall, it may be pinning the floor down. Carefully remove the skirting and check. If the floor is tight against the wall, you may need to trim the edge of the affected planks with a multi-tool or pull up a few rows and refit them with the correct gap. Refit skirting so it's fixed to the wall only, not the floor.
Step 2 – Identify the Noisy Area
Walk slowly across the floor and mark the clicking spots with a piece of tape. Get down and press on the planks by hand — if a plank flexes noticeably, the subfloor beneath it is likely hollow or uneven.
For concrete subfloors, low spots can sometimes be filled with a self-levelling compound such as those available from Ardex or Mapei — but this requires lifting the floor in that area first. For timber subfloors, check for loose sheets or boards and screw them down firmly before relaying the floating floor.
Step 3 – Try a Flooring Lubricant or Injection Fix
For minor clicking at joints that are otherwise well-seated, a small amount of flooring lubricant (sometimes called joint lubricant or floor wax) worked into the joint can reduce friction and stop the noise. This works best on laminate floors. Apply it along the joint line and work it in by walking over the area.
Some installers use a syringe-style adhesive injection kit to inject a small amount of construction adhesive under a hollow spot without lifting the floor. This is a short-term fix and results vary — it works better on vinyl plank than on laminate.
Step 4 – Re-engage or Replace Damaged Planks
If a specific plank has popped out of its joint, you may be able to re-engage it using a tapping block and rubber mallet. Work from the nearest wall, removing planks row by row until you reach the problem plank, then refit everything carefully. This is time-consuming but often the most reliable fix.
Planks with cracked or broken locking profiles will need to be replaced. Always keep a few spare planks from the original installation for this reason — dye lots and product lines change, and matching a floor years later can be difficult.
Step 5 – Check the Underlay
If you're relaying part of the floor anyway, inspect the underlay. It should be continuous with no gaps, overlaps, or bunching. Make sure you're using the underlay type recommended by your floor manufacturer — some floating floors (especially those with a pre-attached underlay) should not have additional underlay added underneath, as too much cushioning can actually cause joint stress and clicking.
In NZ homes, moisture from concrete slabs is a real concern. If your underlay doesn't include a moisture barrier and you're on a concrete subfloor, consider upgrading to a combined underlay/DPM (damp-proof membrane) product. BRANZ has good guidance on moisture management in flooring systems.
Preventing Clicks in Future Installations
| Common Cause | Prevention |
|---|---|
| No expansion gap | Leave 8–12 mm at all fixed edges |
| Uneven subfloor | Level to within manufacturer-specified tolerances before laying (check your product's installation guide for the required flatness specification) |
| Wrong underlay | Follow manufacturer's specification |
| Debris under floor | Sweep subfloor thoroughly before laying |
| Joints not fully engaged | Use tapping block and check each row |
When to Call a Professional
If you've worked through the steps above and the clicking persists across a large area, or if the floor is visibly lifting, buckling, or the joints are separating, it's time to call a qualified flooring installer. Widespread problems often point to a subfloor issue or a moisture problem that needs proper assessment. A professional can also advise whether the floor is still within its warranty conditions — some manufacturer warranties are voided by DIY repairs.
You can find experienced local flooring installers on tradedirectory.co.nz.
