Most timber floor damage we see in NZ homes isn’t accidents — it’s well-meaning cleaning that quietly degrades the finish over months and years. Here are the ten things to keep off your floor, why each one is a problem, and what to use instead.
The dangerous ten
1. Steam mops
Why it’s bad: Steam drives moisture deep into the joints between boards. The wood swells, the finish breaks down, and the bond between board layers (in engineered timber) can fail.
Use instead: a spray mop with a damp microfibre pad. The Bona Spray Mop kit (or the oiled version) is the NZ standard.
2. Vinegar (and citrus cleaners)
Why it’s bad: Vinegar is mildly acidic. On lacquered floors it etches the lacquer over time, leaving micro-pits that catch dirt. On oiled floors it strips the oil layer.
Use instead: a finish-matched neutral-pH cleaner (lacquered) or soap-based cleaner (oiled). See our cleaner comparison.
3. Ammonia and ammonia-based glass cleaners
Why it’s bad: Strongly alkaline. Dulls lacquer; strips oil. Especially common in “all-purpose” sprays — read the label.
Use instead: see #2.
4. Methylated spirits / rubbing alcohol
Why it’s bad: Dissolves some types of lacquer and shellac. Common in DIY cleaning advice but rarely the right choice for any modern wood floor.
Use instead: a damp microfibre pad with a dedicated wood floor cleaner.
5. Abrasive cleaners and scouring pads
Why it’s bad: Scratches lacquer; strips oil. Includes “magic eraser” melamine sponges on lacquered floors.
Use instead: a microfibre pad. For stubborn marks, a spot of Ciranova Intensive Cleaner on a soft cloth.
6. Wax-based polishes and “floor restorers”
Why it’s bad: Standard supermarket “floor restorers” often contain wax or silicones that build up on lacquered floors. Once on, they’re nearly impossible to remove without resurfacing.
Use instead: for a genuine refresh, try GrainGuard (lacquered) or maintenance oil (oiled).
7. Soaking water (any wet mop, full bucket)
Why it’s bad: Standing water seeps into joints and edges. Even small amounts left to dry can mark the finish.
Use instead: spray-mop or damp-mop only. The pad should feel barely damp, not wet.
8. Citrus oil cleaners (orange oil, lemon oil)
Why it’s bad: Solvent-like; can dissolve some finishes. Often marketed as “wood floor restorers” but problematic on modern lacquers.
Use instead: see #6.
9. Bleach
Why it’s bad: Strips colour, etches lacquer. Should never be used on timber floors at any concentration.
Use instead: for sanitising, an alcohol-based wipe is gentler — but most household germs are removed by routine soap-based cleaning anyway.
10. Generic floor sprays not rated for wood
Why it’s bad: “Multi-surface” sprays are usually formulated for tile, lino, or stone. Many contain solvents or alkaline detergents that damage wood finishes.
Use instead: always check the label says “safe for hardwood/timber/wood floors”. Better still, use a finish-specific product.
Things you might think are bad but aren’t
- Robot vacuums — fine on timber floors as long as no beater bar (most use simple suction).
- Microfibre cloths — excellent on every finish. Wash separately to keep them grit-free.
- Pet hair — annoying but not damaging. Sweep or vacuum.
- Furniture felt pads — yes, use them. Especially under chair legs and any furniture moved often.
If you’ve been using something on this list
Don’t panic. Most damage from these products is gradual — a few weeks of vinegar mopping won’t ruin a floor; a few years will. Switch to the right product and the floor will look better within a few cleans.
If the finish is already showing wear:
- Lacquered: a refresher coat may rebuild the surface — try GrainGuard.
- Oiled: a maintenance oil top-up will restore depth — see oiled floor maintenance.
- Severe damage: talk to a flooring contractor about a re-coat (sand-screen + new top coat). Cheaper than a full sand-and-refinish.
