Slate Window Sills

Enhance your home with stunning Welsh slate window sills

Custom made to any shape or size

Custom made slate window sills, produced to your exact measurements and available in a range of thicknesses, with 30mm as standard. Suitable for both internal and external use, natural slate provides a durable, low maintenance and timeless finish.

Each sill is bespoke to your requirements, and we aim to dispatch custom orders within 7 working days.

A maintenance free option for your home

Request a Free Quotation

Step 1: Enter your details. Please give us some basic information about your sills.
Step 2: Custom Review and Quotation. We review your custom slate sill details and send you a quotation with a selection of options for you to choose. If don’t see our reply, please check your spam or junk folders.
Step 3: Secure Invoice. Once you have selected an option we will forward an invoice with secure payment details.
Step 4: Dispatch. Once payment has been received, we will begin manufacturing your sill and be in touch to confirm your delivery.

Frequently Asked Questions

Yes. At LLD Slate Ltd, every slate window sill is bespoke and made to your measurements. We can produce sills to suit different window sizes, shapes and requirements with various thicknesses available. Our standard thickness is 30mm.
Yes. Welsh Slate is highly durable natural stone and is well suited for external window sills. Unlike timber, slate will not rot, warp or become mouldy making it a long lasting option. It can withstand exposure to the British weather while providing a timeless natural finish.
Yes. One of the benefits of choosing a bespoke slate sill is that it can be manufactured to suit your individual measurements and requirements. If you have an unusual window shape or a specific design in mind please contact us to discuss your project.
Yes. One of the advantages of natural slate is that it requires relatively little maintenance. Regular dusting or wiping is generally sufficient for everyday cleaning. Avoid harsh cleaning products unless they are specifically recommended for natural stone.
Slate provides a distinctive natural appearance with variations in colour, texture and markings. It is also durable and can provide a long lasting alternative to manufactured window sill materials.
LLD Slate Ltd manufactures bespoke slate products in North Wales and supplies slate window sills for individual customers and building projects. Contact us with your requirements to discuss your project and request a quotation.
The measurements required depend on the window design and how the sill is intended to be fitted. We recommend taking accurate measurements and discussing the specification with us before ordering, particularly for bespoke or replacement sills.
Yes. Internal slate window sills are an attractive and practical choice for homes and commercial properties. Unlike timber, slate will not rot, warp or become mouldy, making it a long lasting and desirable option.