Granite and Concrete Window Sills Ireland - Double L
 
 
Silver Granite Available
Low Maintenance
Nationwide Delivery
Home/Window Sills

Granite &
Concrete
Window Sills

High-quality window sills for Irish homes and commercial builds. Choose from natural silver granite, cast stone, and concrete - available in various sizes with fast delivery across Ireland.

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Low Maintenance
Premium look with minimal upkeep
3 Material Options
Granite, cast stone and concrete
Multiple Sizes
To fit any window opening
Expert Advice
Help with sizing and material selection

About Our Window Sills

Premium Sills for
Irish Homes.

Complete your build with our high-quality window sills, designed for durability and a professional finish. From natural stone to robust concrete, our collection offers the perfect protection for your window frame while enhancing your home's exterior.

Selecting the right sills is vital for both structural integrity and the aesthetic appeal of your property. Our range is built to withstand the Irish climate while remaining aesthetically pleasing for years to come. Every window sill we supply is engineered to direct water away from the building, protecting your masonry and interior from moisture damage.

We stock a variety of materials and sizes, ensuring you find a match that fits your architectural style and specific building requirements. Whether you choose silver granite window sills or traditional concrete, our products provide a clean, high-end finish to any window opening.

20+
Sill products in stock
3
Material types available
40+
Years supplying Ireland
1-3
Day delivery nationwide

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Granite window sill installed
Silver Granite and Cast Stone - Double L

Why Choose Our Window Sills

Protection and
Lasting Finish.

Since 1981, Double L has been Ireland's trusted partner for quality building materials. We combine decades of expertise with a commitment to sourcing the finest granite window sills and concrete products for Irish homes and commercial builds.

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    Low maintenance - granite and concrete sills retain their premium look with minimal upkeep
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    Superior protection - engineered to direct water away from the building, protecting masonry from moisture damage
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    Aesthetically pleasing - clean, high-end finish to any window opening in any architectural style
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    Extensive choice - granite, cast stone and concrete in a wide variety of sizes to fit any window
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    Over 40 years of experience understanding the specific needs of Irish builders and homeowners
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    Matching wall capping, pier capping and other granite products available for a cohesive look

Product Gallery

Window Sill Inspiration

Granite window sill installed on home
 
 
Silver Granite Window Sill
Stone window sill detail
 
 
Cast Stone Window Sill
Window sill on new build
 
 
Window Sill - New Build

Product Features

What Makes Our Window Sills Different

Superior Weather Protection
Every sill is engineered to direct water away from the building, protecting your masonry and interior from moisture damage in Ireland's wet climate.
Low Maintenance
Granite and concrete sills are designed for longevity, requiring minimal upkeep while maintaining their premium look and feel for decades.
Silver Granite Available
Natural silver granite window sills offer a premium aesthetic appeal and are naturally more resistant to staining and weathering than concrete alternatives.
Multiple Sizes and Profiles
T-frame, stooled, standard and bay sill profiles available across a wide range of widths to fit any window opening in new builds or renovations.
3 Material Options
Choose from natural silver granite, cast stone or concrete window sills to suit your budget, architectural style and specific building requirements.
Expert Technical Advice
Our team provides professional guidance on sizing and material selection to ensure your window frame and sills are perfectly matched for every project.

FAQs

Window Sill Questions Answered

Everything you need to know about granite, cast stone and concrete window sills before you buy. Our team in Rathcoole are happy to advise on sizing, materials and delivery.

Contact Our Team
We offer a range of materials including natural silver granite window sills, cast stone, and high-strength concrete to suit different budgets and architectural styles.
The sill should typically extend beyond the window frame and have a sufficient overhang to allow water to drip clear of the wall. Our team can help you calculate the correct dimensions for your opening.
Both are durable, but granite window sills offer a more premium aesthetic appeal and are naturally more resistant to staining and weathering over long periods. Concrete is a cost-effective alternative that also performs well.
Absolutely. Our products are designed to be versatile, making them ideal for modern new builds or replacing old sills during a renovation project.
While granite is very durable, applying a stone sealer can help maintain a pristine finish and protect against organic growth or staining over time.
For most sills, a simple wash with water and a soft brush is enough. Because they are low maintenance, you won't need harsh chemicals to keep them looking new.
Yes, we provide nationwide delivery for all our granite products and building materials directly to your home or construction site, typically within 1-3 working days.
Yes, we offer matching wall capping, pier capping, window surrounds and other granite products to ensure a cohesive look across your entire property.

Finish Your Build with Confidence

Browse our full window sill range above, or talk to our team about sizing, material selection and delivery across Ireland.

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