TARARA GUIDE

Large-Format Tiles: Pros, Cons & What to Know

What counts as “large-format”

There’s no single official cut-off, but in practice large-format means tiles noticeably bigger than the standard sizes — big rectangular planks and wide square panels, right up to very large porcelain slabs. The bigger the tile, the stronger the visual effect — and the more demanding the installation. The principles below apply to all of them; they just matter more as the tile gets bigger.

The pros — why people choose them

• Fewer grout lines. This is the big one. Fewer joints mean a calmer, more continuous surface that reads as one, rather than a busy grid. It’s the main reason large tiles can make a room feel larger and more modern.
• Easier to keep clean. Grout lines are where dirt and mould collect, so fewer of them means less scrubbing — a genuine day-to-day benefit in a bathroom or kitchen.
• A sense of space and calm. Big tiles make walls and floors feel more expansive and less cluttered, which is why they suit modern, minimal interiors so well.
• A high-end look. Large-format porcelain, especially in stone and concrete looks, gives a designer finish that’s hard to get any other way.

The cons — the honest trade-offs

• They demand a flat substrate. This is the crucial one. Big tiles can’t bend to follow a surface, so any dip or bump in the floor or wall shows up as lippage — edges that don’t sit flush. On a small tile you’d never notice; on a large one it catches the light and the eye. A large-format job that isn’t laid on a properly flat, prepared surface will always look off, no matter how good the tile is.
• They’re heavy and awkward. Large tiles are heavy, which makes them harder to handle and set — especially on walls — and usually a two-person job. That’s labour, not luck.
• Cutting is unforgiving. Cutting big tiles cleanly — for corners, niches and penetrations — takes the right tools and a steady, experienced hand. A chipped or crooked cut on a large tile is very visible.
• Waste can be higher. A cracked or mis-cut large tile is a bigger loss than a small one, so an experienced tiler plans the layout carefully to minimise it.

Marko’s tip: “With big tiles, the tile is the easy part — you can buy a beautiful one anywhere. The whole job lives or dies on the surface underneath and how it’s set. Get the substrate dead flat and set them with care, and they look stunning. Rush the prep, and every edge tells on you. That’s why I never rush the floor before a large-format lay.”

Where large-format tiles work best

They suit large, flat runs where the seamless look pays off: bathroom walls and floors, kitchen floors and splashbacks, and open living areas. They also work beautifully in small bathrooms — counter-intuitively, fewer grout lines make a compact room feel bigger, not busier. Where they’re trickier is over uneven old substrates, or in spaces with lots of small cuts and angles, where the size works against you. Part of good advice is knowing when a large tile is the right call and when a smaller one will serve you better.

One more detail: grout colour

With so few grout lines, the ones you do have carry more weight — so the grout colour becomes a design decision, not an afterthought. A grout close to the tile keeps the seamless look that drew you to large-format in the first place, letting the surface read as one. A contrasting grout does the opposite: it draws a deliberate grid, which can look sharp in the right setting but works against the calm, spacious effect most people are after with big tiles. It’s a small choice that changes the whole feel of the finished wall or floor, and it’s worth deciding on with your tiler rather than by default.

It really is about the installer

More than almost any other tile, large-format rewards craftsmanship and punishes shortcuts. Flat substrate preparation, the right adhesive and technique, careful layout to place the cuts well, and precise, clean setting — get those right and big tiles are one of the best-looking finishes in a modern home. That precision is exactly what we bring to every job. If you’re considering large-format tiles for a bathroom or kitchen in Auckland, tell us about your space and we’ll give you honest advice on tile size, layout and what your substrate needs.

Frequently asked questions

Are large-format tiles a good idea?

For large, flat surfaces and modern interiors, yes — fewer grout lines give a calmer, more spacious, easy-to-clean finish. The catch is that they need a flat substrate and skilled setting to look right, so the installation matters as much as the tile.

Can you use large-format tiles in a small bathroom?

Absolutely, and they often work brilliantly — fewer grout lines make a small room feel more open. They just have to be laid on a properly prepared, flat surface, or uneven edges will show.

What is lippage, and why does it matter with big tiles?

Lippage is when the edges of adjacent tiles don’t sit flush, leaving a lip you can feel and see. Because large tiles can’t flex to follow an uneven surface, lippage shows up much more on them — which is why a flat substrate and careful setting are essential.

Are large-format tiles more expensive to install?

They can take more preparation, more careful handling and more skilled setting than standard tiles, so it’s worth factoring that in. Rather than guess, we give you a clear, itemised quote once we’ve seen the space.

Do large-format tiles need a special substrate?

They need a flat, sound, properly prepared substrate — that’s the single biggest factor in how they turn out. We assess and prepare the surface as part of the job so the tiles sit flush and even.