Marble slabs and tiles, cut to size in Karachi

Slab or tile

A slab is one piece of stone taken off the block at full size. A tile is a module cut to a repeating dimension. The difference that matters is continuity: on a slab the vein runs uninterrupted across the whole face, and on a tile it restarts at every joint.

Slabs also let you book match. Two slabs cut from adjacent positions in the block are opened like the leaves of a book, so the veining mirrors across the joint and the two faces read as one symmetrical figure. That only works if the slabs stay in the order they came off the saw, so a book matched wall has to be planned before the stone is cut rather than assembled from stock afterwards.

Tile is the right buy where the surface is large, repetitive and likely to need a piece replaced one day: corridor floors, bathroom walls, stair risers, lift lobbies. Slab is the right buy where the stone is the subject and the piece is seen whole: a worktop, a vanity top, a reception desk front, a book matched feature wall. Both are cut here, so the same marble can appear as slab in one room and as tile in the next.

Slab

Continuous vein, book matchable

Tile

Repeating module, replaceable

Polished, honed and brushed

Polishing closes the surface. The ground darkens, the veining reads at maximum contrast and depth, and the face throws a reflection. It is also the most slippery of the three when wet, and it shows a scratch or an etch mark soonest, because there is a gloss there to interrupt.

Honing stops short of the gloss and leaves a flat matte face. Veining goes softer and paler, the ground lifts a shade, and small scratches disappear into a surface that has no reflection to break. Underfoot it holds better than polished, which is why a honed floor is the usual answer for a bathroom or a circulation route.

Brushing works abrasive brushes across the face until the softer minerals are cut back and a faint texture is left that a hand can feel. It is the most forgiving of the three, both underfoot and against wear, and it suits a terrace, a pool surround or an external step.

None of the three changes the chemistry. Marble is calcareous, so an acidic spill etches it whatever the finish. A honed or brushed surface hides the etch mark. It does not prevent it.

Polished

Maximum contrast, least grip

Honed

Flat matte, hides scratches

Brushed

Textured, best grip wet

Cut to size in Karachi

AFINISHES manufactures concrete tile and supplies natural stone. The marble is not quarried here. It is bought as block and slab, then sawn, calibrated, finished and edged at the Karachi works to the dimensions on your drawing, which is the part of the process worth having close to the site.

Edge profiles are cut here as well. A square arris straight off the saw suits a floor tile. An eased edge takes the sharpness off a threshold. A bevel catches light along a worktop front. A mitred edge joins two pieces at a corner so the stone reads thicker than it is, which is how a worktop gains a deep apparent edge without a deep slab behind it.

Batch variation is the one thing to plan around. A block is finite, and two deliveries taken months apart come off different blocks, so they will not match. Order the whole area in one lot, add attic stock for repairs while that lot is still open, and dry lay a run before anything is fixed so the tonal spread is distributed across the floor instead of pooling in one corner.

This is the honest difference between stone and the tile we pour ourselves. A terrazzo finish can be mixed again to the same recipe next year. A marble block cannot.

Edges

Square, eased, bevelled, mitred

Sizing

Cut to drawing, Karachi

Ordering

One lot, plus attic stock

Marble against terrazzo

Both surfaces are marble. Terrazzo is marble aggregate set through a cement matrix and ground flat, and the nine marbles above are that same rock left intact. Choosing between them is a question about what the surface has to do, not about which material is better.

Terrazzo gives a controlled field. The recipe is repeatable, the chip grade is specified to the quarter number, there is no directional vein to align, and a worn floor can be reground because the aggregate runs through the full depth of the tile. Across a large area that consistency is worth more than the figure on any one piece.

Marble gives what cannot be manufactured: one continuous piece of geology, carrying a vein that arrived in the block and will not be repeated. Specify it where the figure is the point, on a book matched wall, a single piece worktop, a mosque facade. Specify terrazzo where the area is large, the setting out is repetitive, and the client will want the same finish again in phase two.