Cerdomus Pietra di Ostuni Avorio 8" x 8" Porcelain Tile

Product Overview

Cerdomus Ostuni Avorio 8" x 8" Porcelain Tile recreates the warm, timeworn character of limestone from Italy’s southern architectural landscape in durable Italian porcelain. Part of Cerdomus’s Effetto Pietra di Ostuni collection, Avorio features a softly varied palette of ivory, pale cream, warm beige, and subtle mineral shading.

The compact square format incorporates an antique-inspired chiseled edge and matte stone-look surface, giving floors and walls the character of aged European flagstone. High V4 variation means individual tiles intentionally differ in tone and graphic movement, preventing the installation from appearing repetitive or digitally uniform.

Manufactured in Italy, this 20 x 20 cm—or nominal 8" x 8"—porcelain tile is suitable for residential and commercial floors and walls. Its R10, A+B slip classification supports bathrooms, kitchens, entryways, and other interior spaces where a natural-looking matte surface is desired.

Important product distinction: This description covers the standard Ostuni Avorio 20 x 20 Matt, manufacturer item 0079499. Cerdomus also makes separate 8" x 8" Trame Matt and Grip R11 versions with different textures and performance characteristics.

Recommended Applications

• Bathroom and Powder-Room Floors: The smaller format introduces more grout joints than large tile and creates an appropriately scaled floor for compact spaces.

• Kitchen and Pantry Floors: Porcelain construction provides easier maintenance than genuine limestone while preserving a warm European-stone appearance.

• Entryways and Mudrooms: High graphic variation helps conceal ordinary dust and traffic while creating an aged architectural look.

• Shower and Bathroom Walls: Suitable over a complete waterproofing system with mortar and grout approved for porcelain tile.

• Kitchen Backsplashes: Creates a warm, understated stone field behind countertops, sinks, and cooking areas.

• Fireplace Surrounds: Suitable for decorative fireplace facades outside the firebox and required heat-clearance zones.

• Commercial Interiors: Appropriate for boutiques, restaurants, hospitality spaces, reception areas, and other qualifying commercial installations.

• Modular Stone Patterns: Coordinates with larger Ostuni formats for French-pattern and multi-size layouts.

• Protected Exterior Areas: Frost-resistant porcelain can be considered for properly constructed exterior installations. For frequently wet or exposed walking surfaces, evaluate the collection’s R11 Grip version instead.

Design Profile

• Aesthetic Inspiration: Puglian Limestone, Old-World Italian, Mediterranean Farmhouse, Organic Modern and European Rustic.

• Color Character: Warm ivory and pale cream with beige mineral movement and softly aged tonal variation.

• Edge Advantage: The chiseled perimeter produces the appearance of antique hand-finished stone rather than a sharp contemporary grid.

• Scale Advantage: The 8" square works in small rooms and also serves as a modular component in larger multi-size layouts.

• Complementary Cabinetry: White oak, walnut, warm white, mushroom, sage, charcoal, and natural painted wood.

• Complementary Countertops: Taj Mahal quartzite, Calacatta Gold, warm terrazzo, cream quartz, limestone, and butcher block.

• Complementary Fixtures: Brushed brass, aged bronze, polished nickel, matte black, and antiqued copper.

Manufacturer Catalog

Download the official Cerdomus Effetto Pietra di Ostuni catalog (PDF)

Technical Specifications

Cerdomus specifies the standard Avorio 20 x 20 tile with a chiseled edge, matte finish, 9 mm thickness, V4 variation, and R10, A+B slip classification. 

Installation and Handling Guidelines

⚠️ IMPORTANT: BLEND MULTIPLE CARTONS BEFORE INSTALLATION

Ostuni Avorio carries a V4 high-variation rating. Significant shifts in color and graphic movement are intentional and form part of the collection’s natural-stone appearance.

• Inspect the Material First: Confirm color, caliber, edge character, and finish before installation. Installed tile is generally considered accepted material.

• Dry-Lay the Floor: Open several cartons and distribute lighter, darker, quieter, and more heavily marked tiles across the entire surface.

• Use Porcelain-Rated Mortar: Install with a quality polymer-modified thin-set mortar meeting the requirements of the substrate and installation environment.

• Prepare a Flat Substrate: Correct cracks, movement, excessive deflection, high spots, and depressions before tile placement.

• Allow for Chiseled Edges: The antique edge is intentionally irregular and should not be installed as a groutless or ultra-tight rectified tile.

• Recommended Grout Joint: Approximately 3/16 inch generally accommodates the chiseled perimeter while preserving the aged-stone appearance. The installer should confirm the final joint after measuring the actual tile lot.

• Use Flexible Sealant at Changes of Plane: Apply appropriate movement sealant at walls, countertops, room perimeters, control joints, and transitions instead of rigid grout.

• Waterproof Wet Areas: Install shower walls and other wet locations over a complete waterproofing membrane. Porcelain tile and grout are not the waterproofing layer.

• Back-Butter as Required: Ensure sufficient mortar transfer according to the tile size, substrate, and exposure. Exterior and wet installations require especially thorough coverage.

• Use Appropriate Movement Joints: Follow applicable tile-industry standards for perimeter, field, sunlight-exposed, and substrate movement accommodation.

Grout Selection

• Warm White or Ivory: Creates a continuous limestone-style surface and keeps the floor visually light.

• Light Beige: Reinforces Avorio’s warm mineral coloration.

• Warm Gray: Defines individual tiles while coordinating with the collection’s subtle weathered shading.

• Medium Taupe: Produces a stronger antique-paver appearance and conceals ordinary grout discoloration more effectively.

Always create a grout sample. The same tile can appear considerably lighter, darker, more rustic, or more contemporary depending on joint width and grout color.

Exterior and Wet-Area Considerations

The standard matte tile carries an R10, A+B slip classification and is frost resistant. This makes it suitable for many interior floors and certain protected exterior applications, but it does not automatically make the tile appropriate for every pool deck, commercial wet floor, ramp, or uncovered exterior surface.

Cerdomus offers a separate Ostuni Avorio 8" x 8" Grip tile rated R11, A+B+C for projects requiring greater wet-area traction. Confirm local codes and the intended environmental exposure before selecting between Matt and Grip. 

Care and Maintenance

• Routine Cleaning: Sweep or vacuum loose grit and wash with warm water and a neutral porcelain-tile cleaner.

• No Tile Sealer Required: The porcelain surface does not require penetrating stone sealer, wax, or topical coating.

• Protect Cementitious Grout: Grout may be sealed after curing if recommended by its manufacturer.

• Avoid Wax-Based Products: Waxes and topical polishes can create residue, alter slip performance, and collect dirt on the matte surface.

• Remove Grout Haze Promptly: Follow the grout manufacturer’s cleanup procedure during installation rather than allowing residue to cure.

• Use Entry Mats: Mats reduce tracked grit and simplify maintenance in entryways and commercial spaces.

• Clean Spills Normally: Unlike genuine limestone, porcelain is not vulnerable to acid etching from ordinary vinegar, citrus, or food spills; however, prolonged chemical exposure should still be avoided.

Frequently Asked Questions

Is Ostuni Avorio genuine limestone?

No. It is Italian porcelain stoneware designed to reproduce the warm color, texture, and variation of aged limestone.

What is the actual metric size?

The tile is manufactured as 20 x 20 cm, approximately 7.87" x 7.87", and marketed nominally as 8" x 8".

How thick is the tile?

Cerdomus lists the current standard matte format at 9 mm thick.

What does V4 variation mean?

V4 indicates substantial variation in color and graphic movement. Tiles should be blended from multiple cartons before installation.

Is the edge rectified?

No. This specific 8" x 8" matte product has a chiseled antique-style edge, not the sharp uniform edge associated with rectified tile.

What grout joint should be used?

Approximately 3/16 inch is appropriate for the chiseled-edge character, subject to installer verification of the actual tile lot.

Can it be used on shower floors?

The standard matte version carries R10, A+B slip resistance. Confirm project requirements before using it on a shower floor; the separate R11, A+B+C Grip version may be the better choice.

Can it be installed outdoors?

Yes, in qualifying installations. It is frost resistant, but substrate preparation, drainage, climate, mortar, movement joints, and required slip resistance must all be considered.

Does Ostuni Avorio require sealing?

The porcelain tile does not require sealing. Cementitious grout may benefit from sealing.

How much does one carton cover?

One carton contains 26 tiles and covers approximately 11.19 square feet.

How much extra material should be ordered?

Order at least 10% extra for straight layouts and approximately 15% for diagonal, modular, or cut-intensive patterns. Retaining spare tiles is especially valuable because later V4 production lots may differ noticeably.