Everything You Need to Know

Moisture Testing — Non-Negotiable

Before any timber flooring is installed over a concrete slab, the slab must be moisture-tested. Concrete releases moisture for years after being poured — and moisture migrating up through the slab into timber flooring is the leading cause of cupping, warping, and adhesive failure.

Acceptable moisture readings vary by product and adhesive type — your installer and product technical data sheet will specify the threshold. If readings exceed the acceptable limit, a moisture barrier or DPC (Damp Proof Compound) must be applied and allowed to cure before installation proceeds.

For timber-framed sub-floors, check for bounce, movement, and squeaking. Joists should be at a maximum of 450 mm centres for 19 mm boards. Any movement or flex must be remediated before installation.

Level and Flat — Not the Same Thing

Your sub-floor must be flat to within 3 mm over 1.8 m and 5 mm over 3 m. Note that flat is not the same as level — a floor can be uniformly sloped (level variation) and still be flat, which is acceptable. What is not acceptable is undulation — highs and lows within short distances that will cause boards to rock, nail-pop, or develop hollow spots.

High spots on concrete should be ground back. Low spots should be filled with a self-levelling compound and allowed to fully cure. On timber sub-floors, high spots in the sheeting can be sanded back; low spots filled with a flexible filler or shimmed at joist level.

Clean and Dry

The sub-floor surface must be free of dust, debris, paint, adhesive residue, and any contaminant that would prevent proper bonding or create a hollow beneath the boards. Sweep, vacuum, and where necessary grind or scrape the surface before installation begins.

Expansion Gaps — Critical Detail

Timber expands. Every installation requires an expansion gap of minimum 10–12 mm around the full perimeter of the room — at every wall, door frame, step, hearth, island bench, and fixed obstruction. This gap allows the floor to expand seasonally without buckling.

The gap will be covered by skirting boards, Scotia moulding, or threshold strips — it will not be visible in the finished installation. Installers who tell you a smaller gap is fine are setting you up for a warranty void and a buckling floor in summer.

Layout and Direction

As a general principle, run boards parallel to the longest wall or the primary light source (window direction). Running boards toward the main light source elongates the room visually and shows the natural grain character most flatteringly. Diagonal installation is possible but increases waste by approximately 15%.

Stagger end joints by a minimum of 300 mm between adjacent rows — ideally 500 mm. Clustering end joints creates a visually weak “H-pattern” that is considered poor workmanship and will be visible in raking light conditions.

Finishing and Sanding (Unfinished Boards)

If installing unfinished or site-finished boards, sanding must progress through grits — typically starting at 40–60 grit to level any lippage between boards, progressing through 80, 100, and finishing at 120 grit. Between each grit, vacuum and tack-cloth the surface thoroughly.

Apply finish in a minimum of three coats for polyurethane. Hard wax oil requires two to three application-and-burnish cycles. Allow full cure time between coats as specified by the manufacturer — rushing the cure schedule is the most common cause of finish failure.

Dry Sweep or Dust Mop — Daily in Busy Households

Fine grit and sand particles are the number one cause of scratching on timber floors. They act like sandpaper underfoot, abrading the finish with every footstep. In Australian homes — particularly near beaches, in gardens, or with pets — grit is tracked in constantly. A quick dust mop or dry electrostatic sweep each day removes it before it does damage.

Do not use a regular broom — the stiff bristles push grit across the floor rather than lifting it. A microfibre flat mop or electrostatic dust pad is far more effective.

The No-Water Rule

Water is timber’s enemy. Even small amounts of water left standing on a timber floor will begin to penetrate the finish within minutes and reach the timber itself within hours. Over time, regular water exposure causes the finish to lift, the timber to swell and cup, and — eventually — structural damage to the board itself.

When mopping is required, use a damp — not wet mop with the water wrung out almost completely. Never use a steam mop on timber flooring under any circumstances — the high-temperature moisture will destroy the finish and potentially the boards.

Use the Right Cleaning Products

Only use cleaners specifically formulated for your floor’s finish type. For polyurethane-finished floors: a pH-neutral timber floor cleaner diluted per label instructions. For hard wax oil-finished floors: the specific maintenance oil or cleaner from the same manufacturer as your floor’s finish.

Never use: Vinegar or vinegar-based cleaners (acid degrades polyurethane), bleach, ammonia, all-purpose household cleaners, oil soaps (leave residue), or any product not specifically rated for timber floors.

Recoating: Extending Finish Life

Before a polyurethane finish wears through to bare timber, it can be abraded lightly (screen and recoat) and a fresh topcoat applied without full sanding. This process — done every 5–10 years depending on traffic — dramatically extends the life of the floor and costs a fraction of full sanding and refinishing.

Hard Wax Oil: Re-oiling Schedule

Hard wax oil floors require periodic re-oiling to maintain their protective qualities. In medium-traffic residential areas, re-oil the full floor every 1–2 years. High-traffic areas such as hallways and in front of kitchen benches may need maintenance oiling every 6–12 months. Re-oiling is a simple DIY process that does not require professional equipment.

Full Sanding and Refinishing

The ultimate refresh for any timber floor. A full sand removes all existing finish, any surface staining, and minor dents and scratches, returning the floor to raw timber from which a new finish is applied. Solid floors can typically be sanded 4–7 times over their life. Engineered floors with a 4 mm+ veneer can be sanded 2–3 times.

Flatness Is Critical

Floating floors amplify sub-floor imperfections — because the boards are not fastened down, any high or low spot becomes a flex point that will creak and eventually stress the locking joints. The flatness tolerance for laminate is tighter than for glued-down products: 3 mm over 1.8 m is the maximum acceptable variation.

Check the entire floor area with a 1.8 m straightedge or level. Mark any high spots with chalk. Grind back concrete high spots. Fill concrete lows with self-levelling compound. Sand timber sub-floor high spots. This preparation step takes time but determines the quality of the finished floor.

Moisture Barrier Over Concrete

A polythene vapour barrier (minimum 200 µm) must be installed over all concrete sub-floors before laminate is laid. Overlap sheets by 300 mm and tape all joins. Run the barrier up the wall by 50 mm (it will be trimmed and hidden by skirting boards). This barrier prevents residual moisture from the slab migrating into the HDF core and causing swelling and joint failure.

Underlay Selection

If your laminate does not have a pre-attached underlay, a separate foam, rubber, or cork underlay must be installed. Underlay performs three functions: it absorbs minor sub-floor imperfections, provides thermal insulation, and — most importantly — provides acoustic dampening.

Do not double up on underlay if your laminate already has one pre-attached — excess underlay thickness increases flex in the floor, stresses locking joints, and voids most manufacturer warranties.

Plan the Layout Before You Start

Dry-lay the first few rows before committing. Check that the last row will not be less than 50 mm wide — if it will be, start with a narrower first row so both the first and last rows are similar in width for a balanced, professional appearance.

Maintain Expansion Gaps Everywhere

A minimum 10 mm expansion gap is required at every wall, door frame, and fixed obstruction. Use plastic expansion spacers throughout installation to maintain a consistent gap — remove them after the floor is complete. Missing expansion gaps are the cause of the vast majority of laminate floor failures: the floor expands, has nowhere to go, and buckles.

Stagger Your Joints

End joints between adjacent rows must be staggered by a minimum of 300 mm — 400–500 mm is better. When starting a new row, cut the first board to a length that ensures this stagger. This “brick-bond” approach produces structural integrity and a natural visual appearance.

Tapping and Engagement

Use a tapping block (never hammer directly on a board edge — it will damage the locking profile) to engage joints fully. A fully engaged joint sits flush with no visible gap and no vertical movement when pressure is applied. Any joint that rocks or shows a gap has not fully engaged and must be re-tapped before proceeding.

Finishing Details

Install skirting boards or Scotia moulding to cover expansion gaps and create a finished edge. Use appropriate transition strips at doorways, between rooms, and at changes in floor material. Choose transition profiles that match your floor’s colour — a mismatched silver transition strip in a warm-toned timber laminate floor is a detail that will bother you every day.

Wide Board, Long Length

The same aesthetic preference driving wide-board timber floors applies equally to laminate. Wide, long planks — 200 mm+ wide, 1800 mm+ long — feel more contemporary, more luxurious, and show less visual repetition than narrow short-format boards. They also feel more spatially generous, making rooms appear larger.

Authentic Pale Tones

The dominant Australian preference — in both timber and laminate — is for pale, warm-toned natural finishes. Products that replicate light European oak, bleached Australian hardwood, and natural ash are the consistently strongest performers. These tones are versatile, timeless, and complement the warm, sun-lit interiors that characterise Australian home design.

Matte Finish Is Essential

High-gloss laminate looks immediately artificial in most lighting conditions — the sheen catches raking light and makes the floor’s synthetic nature visible from across the room. Satin and matte finishes read as more natural, more expensive, and more contemporary. For any laminate installed after 2020, matte finish is the unambiguous design recommendation.

Stone and Tile Looks

The most exciting innovation in modern laminate is the quality of stone and tile reproductions. Large-format concrete, marble, and slate looks in laminate are genuinely difficult to identify as synthetic in well-lit residential spaces. They offer a dramatically different aesthetic to timber looks and work beautifully in kitchens, living areas, and contemporary open-plan layouts.

Dry Clean First — Always

The correct sequence for cleaning laminate is dry before wet, every time. Sweep or vacuum first to remove grit and dust. A microfibre dust mop is ideal — it picks up fine particles that a regular broom redistributes. Vacuuming is effective with the hard floor setting (not carpet setting) and without a beater bar, which can scratch the wear layer surface.

Damp Mop — Never Wet

Laminate can be damp-mopped, but the key word is damp. Wring the mop out until it is almost dry — if you can squeeze water out of it over the floor, it is too wet. Work in sections, mopping with the grain direction. Never allow water to pool. Clean up spills immediately with an absorbent cloth — do not allow liquid to sit in the expansion joints at the perimeter or at board-to-board joints.

Use a cleaner specifically formulated for laminate. Do not use vinegar — it damages the aluminium oxide wear layer. Do not use oil-based soaps — they leave residue.

Flatness Tolerance

The rigid SPC core of hybrid flooring bridges minor sub-floor imperfections better than laminate, but the requirement is still 3–5 mm over 1.8 m. High spots must be ground or sanded. Low spots should be filled — self-levelling compound for concrete, flexible filler for timber.

No Vapour Barrier Required Over Concrete

Because hybrid is waterproof, a separate polythene vapour barrier over concrete is not required in most installations. The pre-attached underlay on the board base provides adequate isolation. Check the specific product’s technical data sheet — some manufacturers specify a moisture barrier in situations where the slab moisture reading exceeds a defined threshold.

Installation Over Existing Floors

Hybrid flooring’s low profile (typically 5–9 mm) makes it an excellent choice for installation over existing hard floor coverings. It can be installed directly over existing tiles, concrete, and firm, flat plywood or timber sub-floors without removal of the existing floor. This dramatically reduces renovation time, cost, and the mess associated with demolition.

The existing floor must be flat (within the tolerance above), firmly bonded, and free of loose, cracked, or hollow tiles. Do not install over carpet, cushion vinyl, cork, or any floor that has flex or movement.

Plan First — Execute Second

As with all floating floors, the first decision is direction. Run boards along the longest dimension of the space or parallel to the dominant light source. In open-plan areas that connect multiple rooms, choose a direction that works across the full connected area — a direction change between connected spaces looks awkward and creates an unnecessary transition strip.

Calculate waste: add 10% for a straight lay, 15% for a diagonal lay. Always check lot numbers across all packs to ensure visual consistency.

Expansion Gaps — Still Required

Despite hybrid’s dimensional stability, expansion gaps are still required: minimum 8–10 mm at all perimeter walls, fixed objects, and transitions. The gap allows for the minor expansion that does occur with significant temperature changes, and it is a standard installation requirement for warranty validity.

Wet Area Installation Details

In bathrooms and laundries, hybrid can be installed directly to waterproof level without special additional treatment, but observe these details: seal the expansion gap at the wall with a flexible silicone rather than covering with timber moulding. Use a waterproof silicone at all wall-floor junctions in wet zones.

Underfloor Heating

Most SPC hybrid products are compatible with electric in-slab or electric mat underfloor heating systems, with a maximum floor surface temperature of 27°C. Always verify compatibility with the specific product’s technical documentation. Set the heating system to a low temperature setting for the first 2–3 weeks after installation to allow the floor to settle and adjust.

Prioritise EIR and V-Rating

The same principles that apply to laminate selection apply to hybrid — face variation and emboss-in-register technology are the most important visual quality indicators. Premium hybrid products from quality manufacturers now achieve an astonishing level of visual realism: the texture follows the grain precisely, the sheen levels vary naturally across the board face, and the variation between individual boards is subtle enough that the floor reads as genuinely organic.

The visual quality difference between a budget hybrid and a premium hybrid is more pronounced than any other flooring category. Do not compromise on this — the floor is the first thing everyone sees and feels when they enter your home.

The Australian Palette in Hybrid

As with timber and laminate, warm pale tones dominate Australian hybrid sales — bleached oak, natural ash, light greige timbers. However, hybrid is also successfully sold in tones that are challenging to achieve in real timber: cool grey-whites, charcoal-veined stone looks, and consistent mid-grey timber reproductions.

If you are drawn to a cooler, greyer palette that real timber rarely produces naturally, hybrid is actually the better product category to explore — the flexibility of the digital print layer means the design constraints of real wood species do not apply.

Wide Format Is the Norm

Hybrid flooring is predominantly produced in wide-format planks — 180 mm to 230 mm wide is typical, with lengths of 1200–1800 mm. This format suits contemporary Australian architecture and open-plan living exceptionally well. The wide plank feel, combined with the seamless whole-home installation that hybrid enables, creates a premium residential quality that is otherwise only achievable with expensive engineered timber.

Sweep or Vacuum Regularly

Despite hybrid’s scratch resistance, fine grit still abrades the wear layer over time. A daily or every-other-day dry sweep in high-traffic areas — using a microfibre flat mop — keeps grit from accumulating. Vacuuming is effective on the hard floor setting without a beater bar. The same entrance mat strategy that applies to timber applies here: removing grit at the door is always the most effective protective measure.

Damp or Wet Mopping

Unlike timber, hybrid can be mopped with a genuinely damp mop without risk to the floor itself. Use a pH-neutral, hybrid-compatible floor cleaner. Avoid excessive soap quantities — residue build-up over multiple cleaning cycles creates a dull film. Mop with the board direction in even, overlapping passes. No drying time is required before walking on the floor.

For deep cleaning — after parties, building work, or high-traffic events — a damp mop with a gentle floor cleaner will restore the floor’s appearance fully.

Spot Cleaning

Most stains — including red wine, coffee, and cooking oils — can be removed from a quality hybrid wear layer with a damp cloth and mild cleaner before they have had time to set. For stubborn dried stains, a soft-bristle brush and appropriate floor cleaner is effective. Avoid abrasive scourers or steel wool, which will permanently scratch the wear layer.