Costa Queimada Granite

Costa Queimada Granite is a versatile and attractive natural stone, largely quarried in the Porto region of Portugal. Its inherent beauty, combined with its physical properties, makes it an excellent choice for a variety of architectural and design applications. Below is a detailed description of its physical and mechanical properties, chemical and mineral compositions, recommended usage, maintenance tips, and availability in various sizes and finishes.

Physical and Mechanical Properties

• Water Absorption: Typically low, generally around 0.2 to 0.34%, which contributes to its durability and resistance to moisture-related damage.

• Density: Approximately 2,660 to 2,730 kg/m³, indicating a solid and dense stone suited for heavy-duty applications.

• Flexural Strength: Ranges between 12 to 15 MPa, showcasing its ability to withstand bending and other tensile forces.

• Compressive Strength: Around 130 to 140 MPa, denoting the stone's capacity to withstand substantial compressive loads.

• Hardness: Generally falls on the Mohs scale between 6 and 7, indicative of a hard surface that is resistant to scratches and abrasion.

• Porosity: Typically low, contributing to its resistance against stains and liquid penetration, enhancing its suitability for kitchen countertops.

• Slip Resistance: Dependent on the finish, but generally possesses good slip resistance, especially in honed or textured finishes.

Chemical and Mineral Compositions

• Quartz: Approximately 20-30% by weight
• Feldspar: Predominantly in the range of 50-60%
• Mica: About 5-10%, contributing to the stone's subtle luster and durability
• Other Minerals: Includes traces of iron oxides and other mineral flecks that create its characteristic reddish and gray hues

Usage and Applications

• Interior Applications: Suitable for kitchen countertops, bathroom vanities, flooring, and wall cladding due to its aesthetic appeal and durability.
• Exterior Applications: Can be used for outdoor countertops, facades, and walkways, thanks to its weather-resistant properties.

Maintenance Tips

• Cleaning: Use a pH-balanced cleaner or mild soap with water to maintain its appearance. Avoid harsh chemicals or acidic cleaners that can damage the surface.
• Sealing: Periodically seal the granite to enhance its resistance to stains and moisture absorption.
• Polishing: Regular polishing can enhance its natural luster and maintain its elegant appearance.

Surface Finish Options:

• Polished: Reflective and glossy, ideal for interiors requiring a sophisticated look.

• Honed: Smooth but more matte, offering a contemporary, less reflective aesthetic.

• Bush-hammered: Rough texture providing excellent slip resistance, suitable for exterior and high-traffic areas.

• Flamed: Rough, textured finish achieved through heat treatment, ideal for outdoor applications requiring enhanced slip resistance.

Costa Queimada Granite, with its combination of aesthetic appeal and robust physical properties, makes it a sought-after choice for both residential and commercial projects. Its range of finish options and the ability to customize sizes offer flexibility for various design aspirations. Regular maintenance will ensure its beauty and functionality are preserved throughout its lifetime.