How to install floating laminate flooring

🪚 How to Install Floating Laminate Flooring

What is floating laminate flooring and how does it work?

Floating laminate flooring uses interlocking boards laid over underlay without being nailed or glued to the subfloor. A professional result depends on a flat, dry and clean substrate, suitable underlay, correctly staggered joints and a continuous manufacturer-specified expansion gap—commonly 10 mm.

Laminate is an engineered flooring product rather than solid timber. For Australian living areas, select a reputable 8–12 mm HDF-core board, generally rated AC3 or AC4, with a moisture-resistant locking system where spills may occur.

How long does it take to install floating laminate flooring?

Beginner to Intermediate — Estimated time: 1–2 days for a 15–25 m² room, excluding subfloor repairs and acclimatisation

What tools do you need to install floating laminate flooring?

What materials and underlay are required for floating laminate floors?

🪵 Materials

💡 Purchase all flooring from the same product and batch number where possible to minimise colour and pattern variation.

Safety Requirements

⚠️ Safety

Step-by-Step Guide

Step 1: 1️⃣ Select the Correct Laminate

Choose laminate according to the room, expected traffic and manufacturer’s warranty conditions.

For bedrooms and low-traffic living spaces, AC3 is generally adequate. For hallways, open-plan areas, homes with pets or heavier use, AC4 is preferable. A board thickness of 8–12 mm normally provides better joint strength and a more substantial feel than very thin products.

Check the following before purchasing:

Do not assume “water-resistant” means waterproof. Check the permitted spill exposure time and cleaning requirements.

Step 2: 2️⃣ Measure the Room and Plan Board Direction

Measure the room’s maximum length and width, including cupboards that will receive flooring. Multiply the dimensions to calculate square metres, then add 8–10% waste.

Boards are commonly laid:

Measure the room width perpendicular to the board direction. Divide this figure by the face width of one board to estimate the final row width.

Avoid a final row narrower than approximately 50 mm, or the manufacturer’s minimum. If necessary, rip down the first row so the first and last rows are reasonably balanced.

💡 Lay several unopened or loose boards across the room to review the pattern. Mix boards from at least three packs during installation to distribute colour and grain-print variations.

Step 3: 3️⃣ Acclimatise and Inspect the Flooring

Store unopened packs flat in the installation room for the period specified by the manufacturer—commonly 48 hours, but some products require more or less time.

Maintain normal occupied conditions during acclimatisation:

Inspect every board under good lighting before installation. Set aside boards with damaged locking edges, chips, swelling or obvious print defects. Installed defective boards may not be covered by warranty.

Step 4: 4️⃣ Remove Trims and Prepare Doorways

Remove existing scotia, quarter-round or skirting if it will be replaced. Mark components so they can be returned to the same wall.

Remove doors where necessary and check that adequate clearance will remain for:

Undercut timber door jambs and architraves using an offcut of underlay and laminate as a height guide. The flooring should slide beneath the jamb while retaining its expansion clearance from the wall or framing behind it.

Do not force laminate tightly beneath jambs. A concealed expansion gap is still required.

Step 5: 5️⃣ Assess and Prepare the Subfloor

The substrate must be structurally sound, clean, dry and flat. Remove all nails, screws, adhesive ridges, plaster lumps and loose debris.

Use a 1,200–1,800 mm straightedge to identify high and low areas. Many laminate manufacturers require no more than approximately 3 mm deviation over 1,000 mm, although the specific product instructions must be followed.

For timber subfloors:

For concrete slabs:

Existing ceramic tiles may be suitable if they are firmly bonded and sufficiently flat. Deep grout lines may need filling. Carpet and carpet underlay must be removed.

⚠️ Do not sand, grind or mechanically disturb old vinyl tiles, sheet flooring, underlay or black adhesive until asbestos risk has been professionally assessed.

Step 6: 6️⃣ Install the Moisture Barrier and Underlay

On concrete, install a compliant vapour barrier unless the selected underlay includes an approved integral membrane.

Lay 200 μm polyethylene sheeting with joints overlapped by at least 200 mm, or as directed by the manufacturer. Tape all overlaps and seal around penetrations. Turn the membrane slightly up the perimeter wall so it can be trimmed after installation.

Roll out the underlay in the same direction as the flooring where practical. Butt the edges together without overlaps unless the product instructions state otherwise. Tape joints with the recommended tape.

Do not install two layers of underlay. Excessive cushioning can cause the laminate locking joints to flex and fail.

💡 Underlay cannot correct an uneven floor. Flatten the substrate before laying underlay.

Step 7: 7️⃣ Establish a Straight Starting Line

Check the starting wall for bows or irregularities. Measure out from a straight reference and snap a chalk line if required.

Place spacers along the starting wall to create the specified expansion gap—commonly 10 mm. The gap must also continue around:

Floating flooring must not be trapped under fixed joinery. Kitchens, wardrobes and island units are generally installed before the laminate unless the flooring manufacturer expressly permits otherwise.

Step 8: 8️⃣ Install the First Row

Orient the first board according to the locking-system instructions, usually with the groove or trimmed edge facing the starting wall.

Connect boards end-to-end at the specified angle, then lower them into position. Keep the row straight and maintain the expansion gap with spacers.

For the last board in the row:

With a jigsaw, the decorative face is commonly placed downward when using a standard up-cut blade. With a drop saw, the decorative face is normally upward. Confirm this with the blade manufacturer and make a test cut first.

Do not use a board shorter than approximately 300 mm, unless the flooring manufacturer permits it.

Step 9: 9️⃣ Stagger and Lay the Remaining Rows

Start the second row with an offcut from the first row if it is long enough and produces the required stagger.

Maintain an end-joint offset of at least 300 mm, or the manufacturer’s stated minimum. Avoid repetitive stair-step patterns and do not align end joints in adjacent rows.

Engage each board as directed by the locking system. Some boards are installed row-by-row, while others allow individual boards to be locked along the long and short edges.

Use only the approved tapping block against the locking edge. Tap lightly and evenly; direct hammer blows can crush the profile.

After every three or four rows:

💡 Work from several open packs and rotate boards 180 degrees where the printed pattern allows. This gives the finished floor a more natural appearance.

Step 10: 🔟 Cut Around Pipes, Corners and Obstacles

Measure carefully from the installed row, allowing for the expansion gap.

For pipes:

For corners and irregular walls, create a cardboard template before cutting the board. Leave the required expansion gap behind all trims.

Never fill perimeter movement gaps with rigid adhesive, grout or hard-setting filler.

Step 11: 1️⃣1️⃣ Fit the Final Row

Measure the final row at several points because walls are rarely straight. Deduct the required expansion gap and transfer the measurements to the boards.

Rip the boards lengthwise using a circular saw, table saw or jigsaw. Maintain the factory locking edge required to connect to the previous row.

Engage the final boards and use a pull bar carefully to close the joints. Protect the wall and finished board edge while tapping.

If the last row is exceptionally narrow, review the manufacturer’s minimum board-width requirement. A very narrow row may indicate that the first row should have been reduced.

Step 12: 1️⃣2️⃣ Install Doorway Transitions and Trims

Install transition profiles where:

Fix the trim base to the substrate, not through the laminate. Ensure the flooring can move freely beneath the profile.

At external doors, use the manufacturer’s end profile or reducer. Do not rely on silicone as the only edge restraint unless the product instructions specifically require a flexible wet-area seal.

Step 13: 1️⃣3️⃣ Remove Spacers and Refit Skirting

Once the floor is complete, remove all perimeter spacers. Trim surplus vapour membrane without damaging the floor.

Refit skirting or install 18x18 mm or 19x19 mm scotia to cover the expansion gap. Fix trims to the wall or skirting only—never nail, screw or glue them to the laminate.

Where skirting is nailed, choose fixings appropriate to the wall construction. Typical residential framing may use 90x45 mm timber studs, but locate framing or wall plugs correctly rather than relying on assumed spacing. Any structural wall work falls under the NCC and AS 1684 requirements.

Check that trims do not press down tightly enough to prevent floor movement.

Step 14: 1️⃣4️⃣ Rehang Doors and Complete Final Checks

Rehang doors and check their clearance over the new floor and transition trims. Plane or trim timber doors if required, then reseal exposed timber edges.

Vacuum the floor using a soft brush attachment and clean it with the manufacturer-approved laminate cleaner. Do not flood-mop the surface.

Complete a final inspection for:

Keep spare boards flat and dry for future repairs. Retain the purchase receipt, batch information, underlay details and product installation instructions.

Common Mistakes to Avoid

Underlay does not compensate for high spots, hollows or loose floor sheets. Unevenness can cause movement, noise and broken locking joints.

A floor fitted tightly against walls, pipes or cabinetry may lift or peak when temperature and humidity change.

Underlay that is too thick or soft can overstress the click joints. Always use a product approved for the laminate.

Moisture can swell the HDF core and permanently damage the boards. Test the substrate and use the specified vapour-control system.

Nails, screws, adhesive or fixed cabinetry can prevent the floor from floating. Fix trims only to the wall or substrate.

Pro Tips

Recommended Tools

🔧 Recommended Tools

Eligible businesses purchasing tools for income-producing work may be able to claim an EOFY instant asset write-off, subject to the current ATO threshold, eligibility rules and business-use requirements. Home DIY purchases are generally not deductible; confirm with a registered tax adviser.