Special Windows

Special uPVC Windows — Tilt and Turn, Arch, Bay and More

Not every room can be suited to a standard sliding or casement window. Some spaces need flexible ventilation, while others require curved window frames or designs that make the room feel more spacious. Griham’s special windows range offers a variety of uPVC window designs to meet these needs. From tilt and turn windows and vertical sliders to arch and bay windows, each design serves a specific purpose, helping homeowners choose a windows design for home that balances functionality with architectural appeal. 

Special uPVC Window Designs for Every Architectural Requirement

Griham’s range of special windows addresses openings that standard configurations cannot. Each variant is purpose-built for a specific architectural intent and use case.
Vertical Sliding Window

uPVC vertical sliding windows move up and down rather than sideways, making them ideal for narrower wall openings and spaces where a classic sash windows aesthetic is desired. The upvc sliding sash windows configuration suits heritage-inspired homes and urban apartments where architectural character matters as much as performance.

Tilt and Turn Window

Tilt and turn windows uPVC offer two modes of operation. Tilt inward at the top for controlled ventilation or turn fully open for complete access. The preferred choice for urban homes where security and airflow must coexist.

Parallel Window

Features a uniform opening on all four sides, allowing controlled airflow while maintaining safety. Its narrow opening gap provides added protection, making it particularly suitable for high-rise buildings. 

Twin Sash Window

Features an outward-opening glass panel, an inward-opening mesh panel, and a fixed grill, delivering ventilation, insect protection, and security in a single window system.

Arch Window

Arched uPVC windows add timeless French architectural character to any facade. Crafted with precision, they enhance natural light and elevate the aesthetic appeal of the home.

Bay Window

Projects beyond the exterior wall to create additional interior space and offer panoramic views. Its distinctive design makes rooms feel larger and more open while providing a premium sit-out experience. 

Which Special Window Works Best for Your Home

Choosing the best window design depends on the needs of each room. For bedrooms in busy urban areas, tilt and turn windows offer controlled ventilation through a secure inward tilt, even during rain. In living rooms, bay windows create a greater sense of space, allow more natural light and offer wider views. Arch windows add architectural character to entrance facades and staircase landings, while vertical sliding sash windows complement the traditional style of heritage-inspired and classic homes. Each of these designs serves a specific purpose, helping homeowners select house windows that suit both the architectural style of their home and the practical needs of each space. 

Customise Your Special uPVC Window Design

Every special window in Griham’s range can be tailored to the specific requirements of the space it serves. DecoShield surface finishes, including wood grains, stone textures, and designer patterns, allow any upvc window design to integrate with the overall interior and exterior aesthetic. Glass choices across toughened, frosted, laminated, and double glazed units add performance specification to the visual decision. Mesh options are available across variants for insect protection, and hardware selections complete the system. For any windows design for home that demands both architectural distinction and long-term performance, every element is configurable within the Griham system.