Timber Windows

Bespoke timber windows for every style

We manufacture a wide range of bespoke timber windows, including traditional sash and casement styles. Each window is expertly crafted from high-quality timbers with exceptional attention to detail and workmanship. Our windows offer a seamless, refined appearance; ideal for enhancing properties. Alongside classic design, our windows also deliver modern benefits such as advanced security and full compliance with the latest building regulations.

Have a Project in Mind? Let’s Talk.

At Derwen Joinery, we believe every exceptional piece begins not with timber, but with a conversation. We are genuinely interested in your ideas, your questions, and the unique details that will make your project a perfect fit for your space. Understanding your vision is the most crucial part of our craft. Get in touch with us today to discuss your plans and let’s begin the journey of bringing them to life.

Casement Windows

Windows that Deliver Style and Performance

Timber casement windows remain one of the UK’s most sought-after styles, and Derwen Joinery offers a range of three main types to suit various needs:

Traditional Flush Casement Perfect for window replacements in traditional properties and period renovations, offering genuine character and style.

PAS24 High Performance Casement Energy-efficient windows designed for new builds and change-of-use projects.

Conservation Casement Manufactured to match or be in keeping with the existing windows, ensuring suitability for properties located within conservation areas or listed as Grade I or Grade II.

explore our casement windows

Sliding Sash Windows

Windows Built for Charm and Functionality

Sash windows add timeless charm and a touch of heritage to any property, whether it’s a grand country estate or a modern townhouse. Featuring two sliding glazed frames, known as ‘sashes,’ set within an outer frame, they’re celebrated for their distinctive and elegant design.

Our range offers the perfect blend of traditional style, functionality, and energy efficiency, making them ideal for both restoration projects and new builds.

explore our sliding sash windows