Windows
Sash Windows
LAG sash windows combine heritage charm with modern performance, offering aluminium, uPVC, or wooden frames in customizable finishes, with smooth operation, energy efficiency, and enhanced security.
Windows
Sash Windows
LAG sash windows combine heritage charm with modern performance, offering aluminium, uPVC, or wooden frames in customizable finishes, with smooth operation, energy efficiency, and enhanced security.
1.4W/M2K
U-VALUE
10 YEAR
GUARANTEE
LOW
MAINTENANCE
ENERGY
EFFICIENT
CUSTOMIZABLE
Our sash windows bring timeless appeal with today’s performance. Designed with vertical sliding panels, these windows are perfect for period-style homes or anyone seeking a refined, traditional aesthetic. Our aluminium sash windows offer:
- Smooth glide opening system
- Superior thermal performance
- Enhanced security with integrated locking features
- Low-maintenance, rust-resistant aluminium frames
While preserving the elegance of classic window design, LAG’s sash windows are engineered for modern living — with high-quality glazing, excellent insulation, and options for tilt-in cleaning.
Available in a variety of finishes, colours, and glazing styles, our sash windows can be fully customised to suit your project. Whether you’re restoring a heritage property or adding character to a new build, these windows offer the best of both worlds: heritage charm and high performance.
Aluminium
Opting for a sleeker profile than uPVC and timber counterparts, aluminum sash windows are a popular choice for those seeking unobstructed views of their surroundings. Beyond their aesthetic appeal, these windows boast durability, making them an excellent fit for homes in coastal or high-wind areas.Explore a world of possibilities with our aluminum casement frames, available in a palette of over 200 colors. You have the freedom to customize both the interior and exterior with different hues. Elevate the style further by choosing from various glass effects, such as lead bars, Georgian bars, bevelled designs, or exclusive decorative glass effects meticulously crafted by our team. For a touch of tradition, lead bars in square or diamond-cut shapes are particularly favored for pairing with dark metal window frames.
UPVC
Our uPVC sash windows are a seamless blend of traditional charm and modern convenience. Designed to replicate the classic sash style, they offer the beauty of traditional sliding windows with the benefits of cutting-edge uPVC technology. Resistant to rot, rust, and fading, these windows are built to last with minimal maintenance, requiring no painting or frequent upkeep.
The multi-chambered uPVC profiles enhance energy efficiency, while advanced weather seals protect against draughts, dust, and noise. Their smooth-glide sliding mechanism ensures effortless operation, and built-in security features provide peace of mind. Available in a variety of finishes, including realistic woodgrain effects, our uPVC sash windows allow homeowners to enjoy the character of heritage design while benefitting from durability, insulation, and affordability.
Wooden
For homeowners who value authenticity and craftsmanship, our wooden sash windows are the ultimate choice. Handcrafted from sustainably sourced timber, these windows embody traditional elegance while incorporating the performance benefits of modern glazing. Each frame is meticulously designed to enhance period properties, listed buildings, and heritage restorations, while also adding a sense of character and warmth to contemporary homes.
The natural insulating properties of timber, combined with double or triple glazing, provide excellent thermal and acoustic performance. Customisable in a wide range of paint and stain finishes, our wooden sash windows can be tailored to perfectly match architectural details.