“Can my floor be sanded?” is the most common question we get from Brisbane homeowners. The honest answer depends on whether your floor is solid timber or engineered — and if engineered, how thick the top layer is. This guide gives you the practical test you can do yourself before booking. Quality Floors by Max Francis are here to help — get a free written quote from our Brisbane team.
The fundamental difference
Solid timber floorboards are exactly what they sound like — one piece of timber, top to bottom, typically 19mm thick. Engineered timber is a sandwich: a thin top layer of real timber bonded to a plywood or HDF substrate. Total thickness is usually 14–18mm but the top sandable layer is only 1–6mm.
Sanding removes a fraction of a millimetre per pass and ~0.5–1mm per full sand-and-refinish. So:
- Solid timber — can typically be sanded 5–8 times across its life (decades of use)
- Engineered timber — depends entirely on top layer thickness
Solid timber — usually safe to sand
If you have solid hardwood — spotted gum, blackbutt, brush box, ironbark, jarrah, Tasmanian oak, original Queenslander hardwood — sanding is almost always possible. The only exception is if previous owners have already sanded it 4–5 times and the boards are getting thin. We measure on inspection.
How many sands does solid timber have left?
Visual signs that you’re running out of sandable thickness:
- Tongue-and-groove edges visible from above (board has been sanded down to where the tongue exposes)
- Nail heads sitting proud (the board has lost thickness and the original nails now stand up)
- Visible “dishing” between joists (boards have weakened and bowed slightly)
- Edges feathering at door thresholds where multiple sands have stepped down the level
If you see any of these, get a professional measurement before booking another sand. Cheaper sanders may sand it anyway and leave you with sub-floor exposure. Our process: confirm with calipers at a discreet location (under fridge, behind door swing) before commissioning the job.
Engineered timber — the top layer determines everything
Engineered floors come in three rough categories based on top-layer thickness:
Premium engineered (4–6mm top layer)
Behaves almost like solid timber for sanding purposes. Can typically be sanded 2–3 times in its life. Brands at this end include some Quick-Step, premium Boral lines, Australian Select Timbers, and most European brands (Kährs, Junckers).
Verdict: Yes, sandable.
Mid-range engineered (3–4mm top layer)
Sandable once or twice carefully. Most common in Brisbane homes built 2010–2020. Quick-Step Compact, Hurford, ReadyFlor, mid-range Bunnings/Carpet Court branded ranges.
Verdict: Sandable, but only by experienced operators. Aggressive sanding will cut through.
Budget engineered (1–3mm top layer)
Often called “veneer” floors. Top layer is too thin to sand without going through to the substrate. Common in builder-spec homes 2015 onward and rental properties. ALSO common as part of “12mm laminate” products which are NOT timber at all.
Verdict: Usually NOT sandable. Best bet is a “screen-and-recoat” — a light surface refresh that doesn’t remove board thickness.
How to measure your top layer (the practical test)
Three ways to find out what you’ve got:
- Find an offcut. Builders often leave offcuts in cupboards or the garage from the original installation. The offcut shows the layered structure clearly.
- Pull a board from a low-visibility spot. Wardrobe corner, under fridge, in pantry. We can do this without damage on inspection.
- Heat register / floor vent edges. Where the floor is cut for vents, the cross-section is often visible. Look at the edge under good light.
Once you can see the cross-section, measure the top hardwood layer (the bit that LOOKS like timber):
- 3mm or less: Probably not sandable. Screen-and-recoat is the move.
- 3–4mm: Sandable once if done carefully.
- 4mm+: Sandable 2–3 times across its life.
- Solid wood throughout (no layers visible): Solid timber — multiple sands available.
How to tell if your floor is solid or engineered without measuring
A few quick visual checks:
- Nail visibility: Solid timber Queenslander floors usually have visible nails (or filled nail holes) every 30–40cm along boards. Engineered floors typically have no visible fasteners — they’re glued or click-locked.
- Board width consistency: Engineered floors are uniformly machined — every board the same width. Solid timber (especially older) has slight width variation board-to-board.
- End joins: Solid timber boards have square ends butting at random points along the room. Engineered boards have micro-bevelled ends that create a thin shadow line at every join.
- Sound when walked on: Solid timber over joists sounds “hollow” — there’s air below. Engineered floor floating over concrete sounds “solid” — no airspace.
- Age of home: Pre-1990 = almost certainly solid timber. Post-2010 = much more likely engineered.
Three alternatives when full sanding isn’t right
If sanding isn’t the answer (engineered floor too thin, or just a lighter level of wear), you have three alternatives — each suited to a different problem.
1. Buff and recoat (screen-and-recoat)
Light surface abrasion of the existing finish, followed by 1–2 fresh poly coats. No timber removed. Best for: dull-looking finish, light surface scratches, no deep damage.
- Cost: ~$10–18/m²
- Lifespan: 3–5 years before another refresh
- Time on site: usually 1 day
- Limitation: cannot remove deep scratches or stains — only refreshes the topmost finish layer.
2. Spot repair
Targeted repair of one or two damaged areas without touching the rest of the floor. Best for: single-board damage, localised pet stain, water spot from a leak that’s now fixed.
- Cost: $200–800 depending on extent
- Lifespan: as long as the rest of the floor
- Time on site: 1 day
- Limitation: visible difference between repaired area and surrounding floor for ~6–12 months until UV ages them together. Tinted finishes can narrow this gap.
3. Board replacement
Replacing a few boards entirely while keeping the rest of the floor intact. Best for: deep damage that won’t sand out (urine through to substrate, water-cupped boards, termite damage to specific boards).
- Cost: $400–800 per replaced board area, including blending sand and refinish around it
- Lifespan: 15+ years for the replaced section, ties into existing floor life
- Time on site: 2 days (replace + drying + refinish)
- Limitation: matched timber sourcing — perfect colour match is rare; close match plus tinting gets close.
Knowing which alternative fits your floor is half the battle. We assess on inspection — phone Max on (07) 3345 2097 for a free written quote.
The “screen and recoat” alternative when sanding isn’t possible
If your engineered floor has too thin a top layer to sand, all is not lost. A screen-and-recoat refreshes the surface without removing material:
- Light surface abrasion (not deep sanding) with a fine screen — keys the existing finish for new coat adhesion
- Vacuum and tack-cloth
- One or two new poly coats over the existing
Cost: ~$10–18/m² (roughly half a full sand-and-refinish). Lifespan: 3–5 years before another refresh. Limitation: cannot remove deep scratches or stains — only refreshes the topmost finish layer.
This is often the right move for tired-but-not-damaged engineered floors where full sanding would cost a substrate breakthrough.
Common Brisbane scenarios
“My 2018 Brisbane home has engineered blackbutt and it’s getting scratched”
Likely 3-4mm top layer. We measure first. Probably sandable once if scratches are surface-level. If scratches go through to the substrate, individual board replacement instead.
“My 1930s Queenslander has original hardwood and it’s rough”
Almost certainly solid timber. Probably has 1–2 sandings already done. Measure remaining thickness — if 12mm+ of useable timber remains, sand and finish normally.
“My investment property has ‘timber-look’ floors and they’re worn”
If they’re “timber-look” and not real timber, they’re laminate or vinyl. Cannot be sanded — the surface is a printed image, not wood. Replacement is the only path.
“My Brisbane apartment has thin engineered overlays on concrete”
Typical city apartment scenario. Top layer often 2-3mm. Screen-and-recoat usually right; full sand risky.
Cost comparison — solid vs engineered sanding
| Floor type | Sanding cost (Brisbane 2026) | Lifespan after sand |
|---|---|---|
| Solid timber, full sand & refinish | $25–40/m² | 10–15 years before next sand |
| Engineered (sandable), full sand | $25–40/m² | 10–15 years (if it can take another) |
| Engineered (thin), screen-and-recoat | $10–18/m² | 3–5 years |
| Replacement (any unsandable) | $80–150/m² | 15+ years (new floor) |
Read the full Brisbane cost guide for ranges and what affects pricing.
The honest answer questions to ask any quoter
Before you book any floor sander:
- “Will you measure my top layer thickness on inspection?” (Should be: yes, with calipers or by lifting a discreet board)
- “What’s your minimum thickness rule for sanding engineered floors?” (Should be: 3mm or 4mm — anyone saying “we’ll sand whatever you have” is risky)
- “What happens if you cut through during sanding?” (Should be: clear answer about replacement boards, cost responsibility, etc.)
- “Have you sanded engineered floors of this brand before?” (Should be: brand-specific experience, not generic “yes”)
If a sander avoids these questions or quotes without inspection, walk. We cover this in our species-specific sanding guide and the upcoming “Choosing a Floor Sander in Brisbane” piece.
Frequently asked questions
Can laminate floors be sanded?
No. Laminate is a printed image bonded to fibreboard. Sanding destroys the image. Replacement is the only option.
Can vinyl plank (“hybrid flooring”) be sanded?
No. Vinyl plank is plastic with a wear layer. Cannot be sanded. We cover hybrid flooring in our hybrid flooring guide.
How do I know if my floor has been sanded before?
Visible signs include: nails sitting proud, exposed tongue edges, dishing between joists, feathered thresholds. We confirm on inspection before quoting.
If my engineered floor can only be sanded once, when should I do it?
When the wear layer is genuinely degraded — visible scratches through to the substrate, cupping, or extensive staining. Don’t burn your one sanding on cosmetic issues a screen-and-recoat could fix.
Do you sand parquetry?
Yes — parquetry is its own technique (cross-grain sanding initially) but the same principles apply on engineered vs solid. Phone Max on (07) 3345 2097 to discuss your specific floor.
About the author: Max Francis is a third-generation timber flooring specialist with 25+ years’ experience, ATFA Member #98 and QBCC Licence #64691. He founded Quality Floors in 2000 and works with his son Kyle to restore Brisbane’s timber floors using the latest dust-controlled sanding equipment. Read more about our team and credentials.