Making Structural Glass Attainable for every Extension

At Sieger Systems, we specialise in delivering innovative, high-performance structural glazing solutions that transform architectural visions into reality. Our cutting-edge structural glass systems make frameless glass designs accessible for every extension – be it an oriel window, a structural glass roof, an up-and-over design, or a glass wall.

Break Away from Frames with the UK’s Only Fully Tested, Thermally Broken Structural Glazing System 

Our advanced structural glazing system is the UK’s only fully tested, thermally broken structural glazing solution. Engineered with precision, it combines exceptional thermal performance with a stylish, frameless finish, making it the ideal choice for architects and builders seeking both beauty and efficiency.

Oriel Windows 

Create captivating window seats or light-filled niches with frameless oriel windows. These protruding glass boxes enhance indoor light and serve as cozy alcoves, adding a unique architectural feature to your space. 

• Features: Frameless design, thermally broken fixings, large glass sizes. 

• Benefits: Maximises natural light, creates unique architectural elements, ensures high thermal performance. 

Glass Walls 

Transform entire elevations with frameless glass walls. Seamlessly joined with structural silicone, our large glass panels provide panoramic views and abundant natural light. 

• Features: Expansive glass surfaces, minimal silicone joints, hidden fixings. 

• Benefits: Uninterrupted views, enhanced building aesthetics, improved natural lighting. 

Glass Roofs and Rooflights 

Illuminate your space from above with frameless glass roofs and rooflights. Supported by thermally broken profiles, these installations bring in maximum daylight while maintaining energy efficiency. 

• Features: Frameless overhead glazing, integrated thermal breaks. 

• Benefits: Reduces need for artificial lighting, creates a sense of openness, maintains thermal comfort. 

Glass Extensions 

Extend your living space with stunning glass extensions. From glass box extensions to side return infills, our structural glazing solutions blend indoor comfort with outdoor beauty. 

• Features: Bespoke designs, seamless integration with existing structures. 

• Benefits: Adds value to your property, enhances indoor-outdoor living, customisable to your needs. 

Eaves Windows and Up-and-Over Designs 

Innovative up-and-over glazing solutions blur the lines between walls and roofs, offering unique architectural features that flood interiors with light. 

• Features: Continuous glazing from façade to roof, frameless transitions. 

• Benefits: Maximises light intake, creates striking visual effects, suitable for modern designs. 

Glass Floors and Walk-On Rooflights 

Incorporate walk-on glass floors for a bold design statement. Perfect for bringing light to lower levels or creating visual connections between floors. 

• Features: Structural glass capable of supporting pedestrian loads, anti-slip surface options. 

• Benefits: Enhances lighting, adds a modern touch, safe and durable.