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Flush casement windows
Effortless elegance, engineered to perform
Lignum flush casement windows combine timeless timber design with the reliability of modern engineering. With slim sightlines, fully sealed joints and high-spec glazing, every unit is made to order for a tailored fit and seamless finish. Choose top or side-hung, single or multi-light layouts, and refine the look with traditional or contemporary detailing. Whether you’re restoring a period property or elevating a new build, these windows blend in beautifully.
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Why choose Lignum?
■ FSC® certified timber
■ Secure, Part Q and PAS 24 compliant
■ Beautifully designed for traditional, contemporary, heritage and new-build projects
Clean lines. Timeless look.
Flush timber sashes sit level with the frame, creating a clean, understated look ideal for both heritage homes and modern extensions.
Factory-finished in microporous coatings, they resist the elements with minimal upkeep.
Precision-cut frames and advanced materials mean no warping, no draughts—just exceptional thermal performance and secure multi-point locking.
Fully glazed and ready to install, Lignum flush casements offer a refined alternative to standard windows with style that lasts.
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Key features.
■ Side or top-hung options
■ High security locks as standard
■ Custom glazing bars and mouldings
■ Factory-finished timber
■ Suitable for conservation, contemporary and modern homes
■ Flush finish for a refined look
■ Energy-efficient double or vacuum glazing
■ Discreet friction hinges or traditional butt hinges
■ PAS 24 security compliance
■. Made to measure finished
Our guarantees
ROT & DECAY (ACCOYA)
Up to
50
YEARS GUARANTEE
WORKMANSHIP
Up to
10
YEARS GUARANTEE
PAINT
Up to
3
YEARS GUARANTEE
HARDWARE
Up to
1
YEARS GUARANTEE
GLAZING
Up to
10
YEARS GUARANTEE
How We Work
Every home is different. That’s why Lignum timber windows and doors are designed to flex around how you live, not the other way around.
With Lignum you can personalise your windows and doors with a choice of elegant profiles and detailing. Whether your style is traditional or contemporary, we guarantee you all the beauty of a natural product.
We can sympathetically replicate existing details for conservation areas, supply modern flush frames for extensions, or create a full house set that meets Part L and Part Q compliance in one go.
Planning Your Project
From early-stage ideas to ready-to-fit joinery, we’re here to support your project.
We can guide you through product selection, technical queries, and work with your architect or builder to ensure everything is compliant and coordinated. Whether it’s a full home upgrade or a single feature window, Lignum gives you the tools and expertise to get it right.
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Lignum is backed by The Joinery Network — a collective of leading timber suppliers, manufacturers, and glazing specialists committed to raising standards across the industry. As an approved member, we undergo regular assessments to ensure our workmanship, processes, and product performance consistently meet the network’s rigorous benchmarks.
For our clients, this provides an added layer of confidence: every piece of joinery we produce is crafted to the high standards recognised and upheld by The Joinery Network.
What it means for you;
• Certified manufacturer and installer
• Consistent product quality
• Full compliance with building regs
• Ongoing technical and design support
Lets get started!
Whatever your project, talk to us early on for expert advice and lots of inspiration. With decades of joinery expertise behind us, we’re here with fully certified products that bring lasting beauty to your project.
From specification to site delivery and installation, we keep things simple, consistent, and reliable.
■ Transformational glazing
■ Period-style renovations
■ New build properties
■ Extensions and upgrades
■ Conservation properties