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.

WHY CHOOSE OUR WINDOW SILLS?

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.

  • Low Maintenance

    Our granite products and concrete sills are designed for longevity, requiring minimal upkeep while maintaining their premium look and feel.

  • Superior Protection

    Every window sill we supply is engineered to direct water away from the building, protecting your masonry and interior from moisture damage.

  • Aesthetically Pleasing

    Whether you choose silver granite window sills or traditional concrete, our products provide a clean, high-end finish to any granite window or standard opening.

  • Extensive Material Choice

    We stock a variety of materials and sizes, ensuring you find a match that fits your architectural style and specific building requirements perfectly.

WHY CUSTOMERS CHOOSE DOUBLE L

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.

  • Decades of Experience

    With over 40 years in the industry, we understand the specific needs of Irish builders and homeowners when it comes to durable stone products.

  • Unrivalled Quality Control

    Every piece in our collection, from silver granite window sills to heavy-duty lintels, undergoes strict quality checks to ensure it meets our high standards.

  • Expert Technical Advice

    Our team provides professional guidance on sizing and material selection to ensure your window frame and sills are perfectly matched.

  • Fast Nationwide Delivery

    We pride ourselves on efficient logistics, ensuring your materials arrive on-site exactly when you need them to keep your project on track.

WINDOW SILL FAQs

What materials are your window sills made from?

We offer a range of materials including natural silver granite window sills, cast stone, and high-strength concrete to suit different budgets and styles.

How do I choose the right size window sill?

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.

Are granite window sills better than concrete?

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.

Do you deliver window sills across Ireland?

Yes, we provide nationwide delivery for all our granite products and building materials directly to your home or construction site.

Are your sills suitable for both new builds and renovations?

Absolutely. Our products are designed to be versatile, making them ideal for modern new builds or replacing old sills during a renovation.

Do silver granite window sills require sealing?

While granite is very durable, applying a stone sealer can help maintain that aesthetically pleasing finish and protect against organic growth or staining.

Can I get a custom-sized granite window sill?

We stock a wide variety of standard sizes that fit most Irish homes. Please contact us for specific requirements regarding custom granite window dimensions.

How do I clean my window sills?

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.

Why is there a price difference between concrete and granite?

Granite is a natural stone that requires quarrying and precision cutting, offering a unique look and higher longevity, whereas concrete is a manufactured alternative.

Do you stock matching items for the sills?

Yes, we offer matching wall capping, pier capping, and other granite products to ensure a cohesive look across your entire property.