Extra Large Format Tiles

Extra large format tiles and porcelain panels run to 1200 mm and beyond, up to slab sizes of 1600 by 3200 mm. They are specified for near-seamless floors, wall claddings and worktop surfaces in reception, retail and hospitality projects where the joint grid itself is the thing the design is trying to remove.

Specifying extra large formats

• Substrate tolerance is unforgiving. At panel scale, any substrate deviation transfers directly into lippage across a long edge. Correct the background to SR1 or better and survey it before fixing rather than discovering the problem at installation.
• Full bed coverage, always. Back-butter and notch, working in the same direction, to achieve solid coverage with no voids. A void under a panel is a failure point under any concentrated load.
• Installer capability. Panels need trained installers, suction frame handling, a rail cutting system and usually more than two operatives. Confirm the installing contractor has done panel work before, and allow for it in the programme.
• Thin panels need support. Panels at 6 mm and under are often mesh-backed and intended for wall or overlay use. Confirm the panel is rated for the application before specifying it as a floor.
• Site logistics. Slab-format tiles need crated delivery, A-frame storage, and a route to the workface that clears the panel dimensions. This constrains which floors of a building they can practically reach.

For the more common 600 to 1200 mm range see large format tiles, and for continuous surfaces in an industrial palette see concrete effect tiles.

Frequently asked questions

What is the largest tile format available?

Porcelain slabs are produced up to around 1600 by 3200 mm, in thicknesses from 6 mm for wall and overlay use to 12 mm and 20 mm for floors and worktops. Availability varies by range, so confirm the size and thickness schedule for the specific product.

Can extra large format tiles be used on floors?

Yes, at an appropriate thickness. 6 mm panels are generally wall and overlay products. Floor use calls for 12 mm or greater, with breaking strength confirmed to ISO 10545-4 and full adhesive coverage.

Do porcelain panels need specialist installation?

Yes. Handling frames, rail cutting equipment and trained operatives are all required, and the substrate has to be surveyed for flatness first. Budget and programme should reflect this at tender stage rather than being adjusted later.