Two-centimetre porcelain is one of the more genuinely useful materials to arrive in residential landscaping in the last decade. It is also sold with a lot of hand-waving about how easy it is, which sets people up for the two or three ways it actually fails.
What makes 2cm different
Ordinary floor tile is around 8 to 10 mm thick and has no structural capacity on its own — it relies entirely on the substrate it is bonded to. At 20 mm, porcelain becomes a slab that can span between supports.
That single change unlocks pedestal systems, gravel-set patios and dry-laid installations that thinner tile simply cannot do. It is the same material, fired the same way — just thick enough to carry itself.
Because it is porcelain, it is effectively non-absorbent. It does not need sealing, does not stain readily, will not fade, and does not host moss and mildew the way porous concrete does. In a climate where things stay wet from October to April, that is not a small advantage.
The three installation methods
Pedestal-set. Adjustable pedestals at each slab corner, sitting on a waterproofed roof deck, balcony or concrete slab. Water drains straight through the open joints to the membrane below. Levels are adjustable, so you can run a dead-flat finished surface over a substrate that slopes for drainage. Slabs lift out for access.
Gravel or bedding-course set. Compacted base, bedding layer, slabs laid on top with spacers. The standard approach for a garden patio at grade. Cheaper than pedestals, and the base preparation is where all the quality lives.
Mortar-set. Bonded to a concrete slab with an exterior-rated adhesive system. The most permanent and the least forgiving — it wants a sound, correctly sloped, crack-isolated substrate.
Pedestals are worth it more often than people think
Anywhere there is a membrane below — rooftop deck, balcony, over living space — pedestals mean you can lift a slab to inspect or repair the waterproofing without demolition. On a mortared deck, finding a membrane leak means destroying the finish to get at it.
Porcelain versus concrete pavers
Both are legitimate. The trade-off is fairly clean:
- Porcelain — non-absorbent, never needs sealing, will not fade, resists moss and mildew, lighter to handle, and holds a crisp modern edge. Costs more, is harder to cut, and is more brittle in transit and installation.
- Concrete — cheaper, tougher against impact, available in more shapes and textures, better suited to heavy and vehicular use. But it is porous, so it wants periodic sealing, colour fades over time, and it is prone to surface wear and freeze-thaw damage.
For a rooftop deck or balcony, porcelain on pedestals wins clearly on weight and access. For a driveway, concrete pavers are usually the right answer. For a garden patio, it comes down to look and budget.
The brittleness question
Worth being straight about: porcelain is more brittle than concrete. It can break in transit, during installation, and occasionally after installation from a sharp point impact — a dropped tool, a heavy planter set down hard on an unsupported corner.
Two things manage this. First, continuous even support — most post-installation breakages trace back to a slab that was not fully bedded or a pedestal that had settled. Second, order spares. A few extra slabs from the same batch, kept in the garage, turn a future breakage into a twenty-minute job rather than a colour-matching problem.
Rooftop decks and drainage
This is where 2cm porcelain earns its keep, and it is increasingly common on the contemporary builds across Vancouver, Burnaby, New Westminster and Surrey where a flat roof becomes usable outdoor space.
The principle is that the pavers are a wear surface, not a waterproofing layer. Water passes through the open joints, runs across the membrane below on the structural slope, and exits at the drains. The paver surface stays level and comfortable while the actual drainage happens underneath.
Which means: the membrane and drainage below have to be right before a single paver is set. Pedestals make that assembly serviceable later, but they do not fix a bad one.
Buying and cutting
Practical points before you order:
- Cutting needs the right kit. 2cm porcelain requires a wet saw with a proper continuous-rim diamond blade. It is not an angle-grinder-and-hope material. Factor cutting into whoever is installing.
- Plan the layout to minimise cuts. Because cutting is slow and lossy, a layout that works to the slab module saves real money.
- Check the slip rating, not just the colour. Outdoor-rated, textured finish — non-negotiable in our rain.
- Order 10% over plus spares. Breakage and cuts both eat material.
- Confirm the load case. Foot traffic, furniture, a hot tub and a vehicle are four completely different engineering questions.
Tell us which of the three installation methods you are using when you call — it changes which products are suitable, and it is the first thing we will ask.
