Beveled Black Marble Thresholds

Standard Specifications & Sizing

We offer these thresholds in convenient prefabricated dimensions to simplify your project planning and ensure a professional fit.

• Robust Thickness: Each threshold is a solid 2 cm (approximately 3/4 inch) thick. This provides outstanding structural integrity for daily foot traffic while remaining practical for installation.
• Adaptable Dimensions: Available in widths ranging from 5 cm to 10 cm (2 to 4 inches) to accommodate standard door frames. Lengths are typically custom-cut to your exact doorway measurement, guaranteeing a precise fit.

Available Surface Finishes

Select the finish that best aligns with your design vision and practical requirements. Our premium black marble adapts beautifully to each treatment.

• Polished Finish: This classic high-gloss option maximizes the deep black color and dramatic natural veining of the marble, offering a luxurious and reflective surface. Ideal for interior, low-moisture areas where visual impact is the priority.
• Honed Finish: A sophisticated matte finish that provides superior traction compared to a polished surface. It softens the stone's reflectivity while fully showcasing its color and character, making it an excellent choice for high-traffic areas or homes with children and pets.
• Textured Finishes: Specialized treatments, such as brushed or flamed finishes, can be applied to significantly enhance slip resistance. These options are perfect for exterior entries or any area prone to moisture.

Professional Installation Guide

Proper installation is crucial for maximizing the longevity and beauty of your natural stone threshold.

Tools & Materials Checklist

Gather these items before beginning:

• Measuring & Layout: Tape measure, pencil, straightedge/level, carpenter's square.
• Cutting (if required): Wet saw with a diamond blade rated for marble/granite. Always wear safety glasses and gloves.
• Surface Prep: Stiff brush, vacuum, damp cloth.
• Adhesive: High-quality, flexible thin-set mortar or epoxy adhesive formulated for natural stone. Notched trowel (size per adhesive instructions).
• Setting Tools: Rubber mallet, spirit level.
• Finishing Supplies: Grout (color-matched), grout float, sponges, clean water. 100% silicone caulk (color-matched) for expansion joints.
• Protection: Impregnating sealer suitable for honed or polished marble.

Pre-Installation Preparation

A properly prepared subfloor is essential for success.

1. Subfloor Condition: The base must be utterly clean, dry, flat, and structurally sound. Remove all debris, dust old adhesive wax or sealant
2. Check Flatness: Use a level to verify the surface is flat within 1/8 inch over 10 feet Correct any significant unevenness with a floor leveling compound
3. Dry Fit Threshold: Place the threshold in position without adhesive Check alignment with door jambs and adjacent flooring Make any necessary cuts during this step
4. Plan Layout: Determine final positioning accounting for expansion joints (filled with silicone caulk) where the threshold meets walls or fixed objects

Step-by-Step Installation

Follow these steps carefully:

1. Apply Adhesive

Spread your chosen adhesive onto the prepared subfloor using the notched trowel held at the recommended angle to create uniform ridges

2. Set & Level The Threshold

Firmly place the threshold into fresh adhesive using slight twisting motion ensure full contact Gently tap down rubber mallet over scrap wood block until perfectly level adjacent flooring as verified by spirit level

3. Allow Proper Curing

Adhere strictly curing times specified by adhesive manufacturer typically minimum hours before allowing any foot traffic Do not make adjustments after initial setting window closes

4. Apply Finishing Touches

After full cure apply grout seams if applicable Seal perimeter edges where required matching color silicone caulk allow dry thoroughly

5. Apply Protective Sealer

Once completely dry apply suitable impregnating sealer protect honed polished finish stains Follow sealer manufacturer instructions reapplication periods

Care & Maintenance Tips

Preserve beauty longevity simple care routine:

• Sweep damp mop regularly using pH-neutral cleaner specifically designed natural stone
• Avoid acidic cleaning substances vinegar lemon juice which can etch marble surface
• Promptly wipe spills especially those containing oils acids wine coffee
• Reapply penetrating sealer periodically per product guidelines maintain protective barrier

Why Choose APEXSTONE?

Unmatched Global Supply Chain Stability

Strategically headquartered in the world's stone trade hub, we offer seamless access to over 2,400 certified natural stone varieties. Our vertically integrated supply chain sources directly from premium quarries across six continents, ensuring consistent material availability and mitigating sourcing risks for projects of any scale.

Integrated Digital & Physical Logistics

Our proprietary StoneGPS platform provides real-time inventory tracking and precise material matching. Coupled with our efficient logistics network spanning 42+ countries-including optimized consolidation at Xiamen Port-we guarantee reliable shipping, professional customs clearance, and on-time JIT delivery through a global partner warehouse system.

End-to-End Project Assurance

From ethical sourcing at certified quarries to pre-sale technical consultation and post-sale maintenance support, we ensure supply chain integrity at every step. Our ISO-certified processes, combined with advanced CNC technology and hand-finishing, deliver durable, beautiful stones trusted by iconic global landmarks for over two decades.