Timeless Appeal of Timber
Sliding Sash Windows
Lignum Timber sliding sash windows seamlessly combine classic style with modern innovation.
We have two types of timber sash windows ideal for traditional and contemporary homes. Offering a sophisticated appearance along with superior performance in energy efficiency and security.
Timber Box Sash
Windows
Lignum Box Sash Windows are perfect for heritage and listed properties.
Featuring a smooth operation traditional cord, weight and pulley system our genuine period box sash windows are chosen for Historic buildings, Georgian town houses and Victorian or Edwardian villas across the South West of England and Wales.
Energy Efficient Technology
High-performance glazing and naturally insulated timber frames keep your home warm in winter and cool in summer.
Better than triple glazing: we offer PassivGlas, the latest vacuum glazing technology that is thinner, warmer and quieter than triple-glazing.
Download Product Datasheets
We have technical drawings available for all of our window and door products. We also offer a tailored design service for your project.
Key Features at a Glance
Energy Efficient: High-performance glazing and elegant insulated frames keep your home warm in winter and cool in summer – without compromising on design.
Security Assured: Lignum sliding sash windows are designed to meet PAS24:2022 security standards.
Timber Sustainability: Ethically sourced materials ensure that your windows are as environmentally friendly as they are beautiful.
High security as standard
Our timber sliding sash windows are rigorously tested to stringent security standards and have achieved PAS24:2022 accreditation, ensuring peace of mind without sacrificing style.
Robust locking mechanisms provide effective protection for your home.
Accreditations and Performance
PAS 24:2016
Security
Secured by
Design System
Document Q
Compliant
Document L
Compliant
Document M
Compliant
BS6375-1 2009
Weather Tightness
Customised
your way
Whether you’re seeking a classic aesthetic or a modern touch, our collection of bespoke window detailing and paint or wood stain colours allows you to personalise your space perfectly.
Choose from an array of options, including sash horns, glazing bars and sculptured feature profiles. Additionally, we offer a selection of beautiful hardware options to complement your décor. Transform your windows into a stunning focal point that reflects your unique taste.
Classic sash horn options for your windows
Choice of Sash
Window Furniture
We have a wide range of handles, furniture and hardware to customise your windows.
Our period collection offers the styles and finishes for Heritage restoration projects, and our range of contemporary design options provides a modern twist. Our sash window handles and locks are rigorously tested and achieve PAS24 certification for security.
Hardware options
Colours and Finishes
When it comes to timber windows and doors, the right colours and finishes can make all the difference.
Whether you’re leaning towards the charm of a traditional aesthetic or the sleek lines of contemporary design, there’s a perfect match waiting for you.
A Beautiful Finish, Designed to Last
Lignum windows are protected with the latest coloured coating technology. The durable paint finish is designed to withstand harsh environments and requires minimal maintenance to keep looking fresh for years and years.
Our Warranties
Rot & Fungal Decay
Workmanship
Paint Finish
Hardware
Glazing up to
