Your Professional Window Sills Supplier
Founded in 2002, APEXSTONE has evolved into a globally trusted leader in premium natural and engineered stone solutions. With over two decades of excellence, we specialize in sourcing, crafting, and delivering exquisite marble and stone products for luxury residential, hospitality, and architectural projects across 42 countries worldwide.
Quality Assurance
Our production processes are ISO-certified and combine advanced CNC machining with meticulous hand-finishing.
Rigorous Quality Control
Unlike competitors who rely on random sampling, we inspect every slab individually before shipment. Our QC specialists ensure consistent excellence throughout.
Technical Support
Our dedicated drafting team produces shop drawings based on client rough sketches and blueprints. We are capable of identifying and correcting design discrepancies in submitted plans.
Our Services
We offer short lead times, secure transportation with insurance coverage, and a rapid after-sales response to efficiently resolve any project-related issues.
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Subtle Beige Marble Window Sills
Elegant Angel Beige Marble window sills for dining rooms—affordable, genuine stone with a subtle marble design.
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3/4 Inch Green Marble Window Sills
Elegant Green Marble window sills for guest rooms - affordable genuine stone, 3/4 inch thick, classic decor design.
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Edging Green Marble Window Sills
Tiffany Blue Marble window sills for dining rooms - premium natural stone edging, elegant marble window decor design.
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Eternal Dor quartz Guest Room window sills feature a stunning Calacatta Gold design. This 2cm thick stone adds elegant decor to any guest room, crafted from durable quartz for lasting beauty and easy
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Subtle White Marble Window Sills
Elevate your bedroom with our exclusive Statuario Venato Marble window sills. Crafted from genuine luxury stone, these subtle marble designs add an elegant and sophisticated touch to any window
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20mm White Marble Window Sills
Calacata Oro Marble window sills bring exclusive luxury to your bedroom. Crafted from 20mm thick real marble, these elegant sills offer a timeless decorative design for a sophisticated and durable
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Prefab Grey Quartzite Window Sills
Elevate your home with Cielo Quartzite Hallways window sills. Crafted from premium, genuine quartzite stone, these prefabricated pieces offer a luxurious and durable design solution for elegant
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Beveled White Marble Window Sills
Snow Flake Marble Dining Room window sills offer an affordable touch of real stone elegance. Featuring a beveled design, these marble accents elevate your dining space with timeless, decorative charm.
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Polished Green Marble Window Sills
Primavera Marble Kitchen Window Sills: Elevate your kitchen with the exclusive luxury of real, polished marble. This elegant stone design adds a sophisticated touch to any window decor.
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10mm Green Quartzite Window Sills
Elevate your home office with Verde Lapponia Quartzite window sills. Crafted from 10mm luxury real stone, this premium quartzite adds a sophisticated and durable design element to any workspace.
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Contemporary Black Marble Window Sills
Elevate your hallways with our affordable Oriental Emperador Marble window sills. Crafted from genuine stone, this contemporary design adds a touch of timeless elegance and modern sophistication to
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Polished White Marble Window Sills
Elevate your guest room with our Oriental Calacatta Marble window sills. Crafted from genuine, polished marble, this luxurious stone design adds a touch of elegance and sophistication to any window
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Marble windowsills – a practical and luxurious selection
Marble windowsills have a luxurious appearance and offer eye-catching beauty, but there are also more practical reasons why you should prefer marble as a windowsill material. Owners of wood and laminate windowsills know that windowsills wear out and require replacement in order to maintain a fresh appearance. Laminate expands when exposed to moisture and the main layer comes loose at the edges… Wood, even if properly impregnated or varnished, is much more fragile than stone and changes and decays over time. Stone, including polished marble, although also an organic material, is known for its durability – it is not damaged by water seeping from the bottom of a flower pot, or bleached by sunlight. There is nothing more beautiful than marble glittering in the rays of the spring sun, the pattern of which one cannot help but marvel at.
Products Information
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Product name |
Window sill, window sill tiles, window sill cover, granite window sill, marlbe window sill |
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Material |
Granite, marble, travertine, slate, limestone |
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Surface finish |
Polished, honed |
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Edge finish |
Eased polished, bullnose, ogee etc. |
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Size |
121/133/145/155/165/175/185/200x13/20/30cm |
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121/133/145/155/165/175/185/200x15/20/30cm |
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121/133/145/155/165/175/185/200x18/20/30cm |
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Thickness |
2cm, 3cm |
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Color |
White, black, grey, beige, green, red, yellow, blue |
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Packing |
Plastic film and foam inside, wooden crate outside |
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Quality Assurance |
From raw material choice, fabricating, packing to loading, Our QC will strictly inspect each piece and control each process to ensure quality standards and timely delivery. |
Window Sill Tiles

- Size available: According to the customer of demands. We can cut the random size
- Stone Material: Natural or artificial marble, travertine or granite ect.
- Processing Edge: Full Bullnose, Half bullnose, Flat eased (eased edge), Beveltop, Radius Top, Ogee Edge, Dupont Edge, Beveled processed and polished etc.
- Feature: Marble have solid and beautiful surface, it suit to decorate the hourse or floor tile.
- Any colors and specifications of skirting can be made as per customers' requests
- Quality: Grade A
- Packing: Wooden crates
Prefabricated Sizes And Thickness
Standard Thickness: Typically around 2 cm (about 3/4 inch) which is sufficient for robustness without being overly bulky.
Common Lengths and Depths: Lengths can vary but are usually cut to match window widths. Depths (front to back) typically range from 10 cm to 20 cm (4 inches to 8 inches).
Suggested Surface Finishing
Polished
Provides a glossy, sleek look, suitable for marble and granite, enhancing the stone's natural colors and patterns.
Honed
Offers a matte finish that is less prone to showing scratches, suitable for all stone types.
Flamed or Brushed
Good for increasing slip resistance and hiding wear, especially on slate and limestone.
Reasons For Choosing Marble For Window Sills
1. The marble bay window is not afraid of tide, will not deform, easy to maintain, but relatively cool;
2. Marble window sills have beautiful colors and patterns, high compressive strength and good physical and chemical properties;
Versatile Design Options
Marble is incredibly versatile, not only in terms of color and pattern but also in finish and cut. From the classic polished look to a more contemporary honed finish, marble window sills can be tailored to suit a wide range of design preferences and architectural styles. Whether you’re renovating an old home or designing a new one, marble offers options that can seamlessly integrate with your existing decor or become a standout feature in your design plan. This versatility makes marble sills an excellent choice for those looking to customize their interiors to reflect their unique tastes and styles.
Custom Sizing for Any Space
Marble window sills can be custom cut to fit any window size, ensuring a perfect fit that enhances the architectural integrity of your space. Whether you’re updating old window sills in a historical property or incorporating them into a brand-new build, the ability to tailor marble sills to your specific needs allows for seamless integration. This customization extends beyond mere sizing; it includes choosing the exact marble that matches the existing or intended decor of your room, from color and veining to finish and edge detail. Custom marble window sills are more than just functional elements; they are bespoke features tailored to your aesthetic and functional requirements.
Easy Installation
While marble may seem like a luxurious and daunting material to work with, the installation of marble window sills is straightforward when handled by professionals. Expert installers ensure that your marble window sills are not only perfectly aligned and secured but also that they enhance the overall functionality and appearance of your windows. Proper installation is crucial for maximizing the durability and aesthetic appeal of marble sills. With skilled craftsmanship, your new marble window sills will be set in place with precision, ensuring they last as long as the building itself.

FAQ
As one of the most professional window sills manufacturers and suppliers in China, we're featured by quality products and good service. Please rest assured to buy high-grade window sills competitive price from our factory.
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