VELFAC
Founded in Denmark more than 50 years ago, VELFAC has become the UK’s leading manufacturer of composite windows and doors. Renowned as ‘daylight engineers,’ VELFAC is known for its expertise in optimizing natural light. Alongside its sister company VELUX, VELFAC is part of VKR Holding, a global group dedicated to providing high-quality windows and doors that enhance indoor climate by improving airflow and daylight.
We are a
VELFAC Distributor
- See VELFAC windows and doors at a VELFAC distributor showroom, together with glass samples, a range of accessories and frame colour swatches
- Access expert guidance from VELFAC-trained advisors, to ensure your windows deliver the design impact and technical performance you expect
- Trained installers work with your builder and architect to ensure windows and doors are successfully installed on schedule and to budget
- Plan with confidence thanks to comprehensive support at every project stage, from initial design to post-installation.
VELFAC composite glazing
VELFAC composite windows and doors seamlessly blend low-maintenance external aluminium with natural internal timber, offering a modern aesthetic, exceptional durability, superior insulation, and a secure, sustainable design. The slim frame maximizes natural light, while uniform sightlines ensure a consistent external appearance across all units. Every VELFAC window is custom-made, with each frame element available in a range of finishes to suit individual preferences.
VELFAC is the ideal glazing solution for any home, in particular:
- Self-build or architect designed projects featuring high quality, stylish materials
- ‘Grand designs’ which fully exploit the design versatility of the VELFAC system
- Beautiful views and outstanding locations which can make the most of extra-large VELFAC windows which also offer impressive weather resistance
- Sustainable, low energy homes built to Passivhaus principles or for zero carbon living

The VELFAC 200 Composite Window

- Durable, low maintenance external aluminium sash, natural timber inner frame
- Contemporary design, ideal for new build homes and ‘grand designs’
- Double or triple glazed

- Low U-values mean excellent insulation – 0.8W/m2K for triple glazed units
- Ultra-slim 54mm frames maximise daylight


- ‘Secured by Design’ approved
- Every frame manufactured bespoke
- Uniform sightlines for a seamless external facade

- Choose different frame finishes inside and out
- Casement, sliding and bi-parting patio doors also available

VELFAC V200 Samples
VELFAC 200 Windows: The Details
Composite frame
The VELFAC signature frame features a durable aluminium exterior paired with a warm, natural timber interior. The moving aluminium sash is positioned directly in front of the fixed timber frame, creating a ‘floating sash’ effect, enhanced by the recessed weather seal. Its slim design allows for maximum natural light, while uniform sightlines ensure a consistent external appearance across all window units, regardless of opening type, manual or motorised operation, or whether fitted with double or triple glazing.
Low maintenance design
The external aluminium frame is built to endure even the harshest weather conditions and requires no repainting throughout the entire lifespan of the installation.
Thermal performance
VELFAC windows provide U-values as low as 0.8W/m²K for triple-glazed units. The slim frame enhances both thermal and acoustic insulation, as the glass offers better insulation properties than the frame.
Sustainability
Sustainability is at the core of VELFAC’s design philosophy. All materials are responsibly sourced, wood treatments are water-based, and 93% of each window unit is reusable.
Security
VELFAC 200 windows are Secured by Design certified and incorporate various security features, such as internal glazing beads to prevent external glass removal and multi-point locking systems. The robust external aluminium frame is also highly resistant to forced entry.
Glass options and accessories
VELFAC provides a variety of glazing options to tailor window performance, including opaque designs for enhanced privacy and security. A range of VELFAC-designed handles, hinges, restrictors, and other accessories are also available.
Frame finishes
The standard VELFAC frame combines polyester-powder coated external aluminium with painted or lacquered internal timber. The frame can be customized with different interior and exterior colours from the full RAL range, or finished with a granite or anodised coating (aluminium only).
Warranties
VELFAC offers a 12 year comprehensive product warranty on all windows, and five years on all casement, sliding, and external doors.