Kaarma Limestone

Kaarma Limestone is a distinctive dolomitic limestone sourced from Kaarma, Saaremaa in Estonia. It is characterized by its soft to medium grey-green color palette, with tones ranging from light grey and bluish-grey to greenish-grey. Occasionally, it displays subtle beige or earthy undertones. The limestone boasts a uniform, calm appearance and a fine-grained crystalline texture, which is sometimes enhanced by small natural voids or crystal “druses,” offering a slight visual sparkle or depth. It features muted, elegant natural color variations rather than strong veining, making it an excellent choice for creating consistent architectural looks across large surfaces.

Physical and Mechanical Properties:

• Water Absorption: 8.0-9.0%
• Density: 2100 - 2200 kg/m³
• Flexural Strength: Generally moderate, suitable for standard construction applications.
• Compressive Strength: 29-37 MPa
• Hardness: Moderate, able to withstand typical wear and tear in indoor and outdoor settings.
• Porosity: Moderately porous, contributing to its characteristic appearance and texture.
• Slip Resistance: Adequate for indoor use; outdoor use may require additional treatment to enhance slip resistance.

Chemical and Mineral Composition (% by weight):

• Calcium Carbonate (CaCO₃): Predominantly high, characteristic of limestone.
• Magnesium Carbonate (MgCO₃): Present due to its dolomitic nature.
• Silica (SiO₂): Trace amounts, imparting some resilience.
• Iron Oxides (Fe₂O₃): Minimal, contributing to subtle color variations.
• Alumina (Al₂O₃): Trace amounts, typical of natural stone.

Usage:

• Interior Cladding: Ideal for walls and ceilings due to its elegant and uniform look.
• Flooring: Suitable for commercial and residential settings.
• Countertops: Durable and aesthetically pleasing for kitchens and bathrooms.
• Outdoor Landscaping: Used for garden paths and patios, though slip resistance treatments may be necessary.

Maintenance:

• Regular cleaning with pH-neutral stone cleaners is recommended.
• Periodic sealing can help maintain its appearance and reduce porosity.
• Avoid acidic cleaners that can erode the stone over time.

Cutting Sizes (cm):

• Standard tiles: 30x30, 30x60, 60x60
• Slabs: Custom sizes available upon request for specific architectural needs.

Surface Finish Options:

• Polished: Enhances the crystalline texture and color depth.
• Honed: Provides a smooth, matte finish, maintaining its natural look.
• Brushed: Accentuates the texture, offering a rustic appearance.
• Sandblasted: Adds a non-slip surface, suitable for flooring or outdoor use.

Kaarma Limestone serves as a versatile building material with its unique aesthetic appeal and practical properties, making it suitable for a variety of architectural applications. Its moderate porosity and elegant appearance offer a sophisticated solution for both interior and exterior designs.