How to Install Deck Tiles

Interlocking deck tiles are one of the easiest floors to lay - they clip together by hand and need no glue, screws or grout. The skill is all in reading the surface underneath and finishing the edges, so the floor sits flat, drains, and looks deliberate rather than improvised.

Start with the surface

The tiles have raised feet on the back that lift the surface a little and let water drain beneath, which is why they suit balconies and patios. But they only sit as flat as what they rest on:

• Concrete or a balcony deck - the ideal base. Sweep it clean and dry; lay straight down.
• Slightly uneven concrete - the feet bridge small dips. For bigger hollows, fill with a self-levelling compound or a thin sand screed first.
• Grass, soil or gravel - needs flattening and compacting, ideally over a weed membrane and a thin levelling layer. See can you put deck tiles on grass for that ground prep in full.

The test is simple: no tile should rock, and water should run away rather than pool under the floor.

Plan the layout

Before you clip anything together, work out how many tiles you need and where the cuts fall:

1. Measure the area and get a tile and pack count from how many deck tiles do I need or the deck tile calculator.
2. Find the most visible straight edge - a doorway or the front of the balcony - and plan to start there with full tiles.
3. Dry-lay one row across and one row out to see where the cut tiles land. Shift the start line if you would end on a thin sliver at the far wall.

Lay the tiles

1. Clip the first tile into the corner of your start edge, connector tabs facing the direction you are building.
2. Work along the row, pressing each tile’s tabs onto the last until they click flat. A rubber mallet helps seat stubborn ones.
3. Build out row by row, keeping the leading edges square. Most systems only join in two directions, so keep the tile orientation consistent.
4. Cut the edge tiles to fit walls and corners - measure each gap, mark the tile, and cut from the top face. On the join side, trim back to the tabs so the offcut still clips in.
5. Notch around posts and pipes with a jigsaw rather than leaving a gap.

Finish the edges

A raw tile leaves a small lip at any exposed edge. Most ranges sell snap-on bevelled edge strips and corner pieces that clip to the outer tabs and ramp the floor down neatly:

• Add trim only on exposed edges - you do not need it where tiles butt a wall, a step or a threshold.
• The deck tile calculator will size the edge and corner pieces if you tick the edge-trim option and enter your strip length.

Worked example

A 4 × 3 m balcony over a sound concrete slab:

1. Sweep the slab, check it drains, and confirm no major hollows.
2. Calculate the tiles - about 147 in 300 mm tiles, 17 packs of 9.
3. Start at the door, dry-lay a row, and shift the line so cuts land at the back wall.
4. Clip the full field, then cut the perimeter tiles.
5. Snap edge trim along the two open balcony sides and the corners.

A few tips

• Lay on a warm day if you can - composite and plastic tiles are a little more flexible and clip together more easily.
• Keep a few full tiles spare; lifting and re-clipping a damaged one later is a five-minute job.
• Sweep grit off regularly and lift a few tiles each season to clear leaves from underneath, so the drainage keeps working.
• Not sure which tile to buy? Compare composite, wood, plastic and rubber in types of deck tiles compared.