Large Format Porcelain • Architectural Grade • Reliable Availability
Large-format porcelain slabs
Large-format porcelain slabs for kitchens, walls, facades and commercial projects, in 48x111, 48x110, 48x96 and 64x128 formats and a wide range of designs.
- —Direct Wholesale Pricing
- —Indoor & Outdoor Collections (Pavers)
- —Reliable availability for ongoing projects
Access pricing, specifications, and current availability for our porcelain collections.
Why professionals choose Raphael Porcelain
The "Smart Alternative" to big box giants. Same premium look, better margins for your business.
Porcelain slab sizes
Four large formats, each available in several designs and finishes. Sizes are nominal, in inches.
48x111
Thickness: 6mm
Best for: islands, full-height walls
Tall enough to run from floor to ceiling in most rooms, and long enough to cover a typical kitchen island in one piece.
48x110
Thickness: 6mm
Best for: islands, full-height walls
Practically the same footprint as 48x111: compare the designs of both formats when you plan a wall or an island.
48x96
Thickness: 6mm (most designs)
Best for: walls, floors, vanities
Eight feet tall: a good match for standard ceiling heights, bathroom walls and vanity tops.
64x128
Thickness: 6mm
Best for: large islands, facades
The widest format: more surface per slab and fewer joints on big islands and wide walls.
Thickness matters for how a slab is handled and installed. The 6mm slabs above are made to go on walls and floors over a full bed of thin-set, and to be reinforced or supported by the fabricator when they become a countertop. If your project calls for a different thickness, such as a 12mm porcelain slab for a self-supporting countertop edge, contact us and we will tell you what is available. Each design lists its sizes, finishes and thickness on its product page.
To choose a size, start from the surface: measure the height of the wall or the length of the island and pick the format that covers it with the fewest joints. A 48x111 slab covers about 37 square feet and a 64x128 slab about 57, so a wall or an island needs far fewer pieces than with tiles. Order a few extra slabs for cuts, and for lining up the vein across the joints.
Where large-format slabs are used
Large-format porcelain slabs cover big surfaces with few joints, so one design can run from the floor to the ceiling, across an island or along a facade.
Porcelain is dense and absorbs very little water, so it takes daily cleaning, spills and heavy foot traffic without special care, and it does not need sealing. That is what lets the same slab work on a kitchen island, a shower wall, a hotel lobby floor or a building's exterior. In lobbies, restaurants and stores, large formats also mean fewer pieces to set and fewer grout lines to clean. See more installations in the gallery.
Large-format porcelain slabs installed
Kitchen islands, feature walls, showers and floors in 48x111, 48x110, 48x96 and 64x128 porcelain slabs, from real projects and renders. Filter by room, look or color, and open any photo to see the design.
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Bookmatched, continuous and random veining
How slabs are laid next to each other changes the whole wall. Each pattern below is drawn with real slab faces from our catalog, at the true proportion of a 48x111 slab.
Bookmatched
Two slabs mirror each other at the joint, like an open book. The vein meets itself in the middle and draws a symmetrical figure, which is why a bookmatched porcelain slab pair is a favorite for feature walls, fireplaces and the back wall of a shower. Shown: Blue Storm Onyx.
Continuous
The vein flows from one slab to the next across the whole wall. The faces of the design are made to follow each other, so the slabs go up in their sequence and a long wall or an island waterfall reads as one piece. Shown: Calacatta Udi.
Random
Each slab is unique: the face changes from one slab to the next, so a floor or a large wall looks natural instead of repeated. Best for floors and large areas, where the layout does not need to line up. Shown: Nero Marquina.
Not every design comes in every pattern. Ask your dealer or our team which pattern a design comes in before you plan the layout, and count the slabs of a bookmatched or continuous wall as a set.
Cutting, handling and installing large slabs
Large-format porcelain slabs are cut and finished by a fabricator, like any countertop or wall slab. Straight cuts, mitered edges for waterfall islands and cut-outs for sinks and cooktops are made with tools rated for porcelain, and the inside corners of every cut-out are rounded so the slab does not crack from the corner.
Moving a slab safely takes the right equipment. Slabs travel and are stored upright on A-frames, and they are lifted with a rigid frame and suction cups so they do not bend. A large slab should never be carried flat by its edges.
On walls and floors the substrate has to be flat and sound, and the slab needs full coverage of a thin-set mortar made for large-format porcelain, applied to the wall and to the back of the slab. Follow the instructions of the setting materials and the TCNA Handbook: our warranty covers slabs installed that way.
Plan the layout before anything is cut: mark where the joints fall, keep cut-outs away from the edges of the slab where you can, and lay out bookmatched or continuous slabs in their order so the vein lines up. On floors, a leveling system helps keep neighboring slabs flush.
Large-format slab designs
A selection of the designs we make in slab formats, in catalog order. Open a design to see its sizes, finishes and photos.
Most of our slab designs are marble-look porcelain, from soft Calacatta and Statuario veining to onyx-look designs and dark ones like Nero Marquina. Each product page shows the slab face, room photos and the sizes and finishes the design comes in, so you can compare designs before you visit a dealer or ask for samples.
Specs and downloads
What a specifier, a contractor or a fabricator needs before ordering slabs, in one place.
Technical specifications
Performance data for our porcelain slabs and tiles, in one place.
Installation guides
Step-by-step installation guides for porcelain and pavers, with material requirements, for contractors, builders and fabricators.
Certifications
NSF, Greenguard Gold, USGBC and Kosher: what each certification of our porcelain covers.
Large-format slabs FAQ
What sizes do large-format porcelain slabs come in?
Our large-format porcelain slabs come in four formats: 48x111, 48x110, 48x96 and 64x128 inches (nominal). 48x111 and 48x110 run from floor to ceiling in most rooms and cover a typical kitchen island in one piece; 48x96 fits standard ceiling heights and bathroom walls; 64x128 is the widest, for large islands and facades with fewer joints. Each design comes in some of these sizes, listed on its product page. Browse the 48x111 porcelain slab designs.
How thick are porcelain slabs?
The large-format slabs on this page are 6mm thick, which keeps them light enough to install on walls and floors. Thicker slabs, such as a 12mm porcelain slab, are mostly used for countertops with a self-supporting edge; contact us to check what is available for your project. For patios and pool decks, our 2cm porcelain pavers are a separate line.
Can a porcelain slab be used for a kitchen island?
Yes. A 48x111 or 64x128 slab covers most islands in one piece, and a fabricator can miter the edges for a waterfall that carries the vein down to the floor. Porcelain resists heat, stains and scratches, and it does not need sealing. Ask your fabricator about edge profiles and about support for overhangs. See porcelain for kitchens.
What does bookmatched mean?
Two slabs are installed as mirror images of each other, so the vein meets itself at the joint and draws a symmetrical figure, like an open book. It only works with designs made for it, and it needs a careful layout before any cut: the pair is planned as a set. Continuous designs are different: the vein flows from one slab to the next instead of mirroring.
Can large-format porcelain be used outdoors and on facades?
Porcelain absorbs very little water, which is what makes it suitable for exterior walls and facades. On a facade, the installation system (a ventilated facade or an exterior-rated adhesive) is specified by the project's engineer for the building and the climate. For patios and pool decks, porcelain pavers are the usual choice: see porcelain for outdoor spaces.
Request porcelain pricing & availability
Contact us to receive porcelain pricing, specifications, and availability. Tell us about the project, the sizes and the designs you are considering, and our team will get back to you.