Keystone Supplies, Unit 17 Storforth Lane Trading Estate, Hasland, Chesterfield, Derbyshire, United Kingdom S41 0QQ
01246 201523‬
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Velfac Windows

Keystone Supplies Limited is based in the historic market town of Chesterfield, Derbyshire.
As an independent supplier of timber windows, doors, Keystone Supplies have the ability to design and supply entire projects, meeting the requirements of any particular development.

Group 79

Windows & Doors

This is Velfac

Founded in Denmark over 50 years ago, VELFAC is now the UK’s leading manufacturer of composite windows and doors. VELFAC has an unrivalled reputation as ‘daylight engineers’. Together with sister company VELUX, VELFAC is part of VKR Holding, an international group supplying high quality windows and doors designed to deliver fresh air, daylight and a better indoor climate.

Group 79

Contemporary Style, Impressive Durability, Excellent Insulation

VELFAC Composite Windows

VELFAC composite windows and doors combine low maintenance external aluminium with natural internal timber, and are renowned for their contemporary style, impressive durability, excellent insulation, and secure and sustainable design. The slim frame maximises natural light, and uniform sightlines give every unit an identical external appearance. All VELFAC windows are manufactured bespoke, and each frame element can feature a different finish.

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

The benefits of using 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 windows – in detail

Low maintenance design

Proven to withstand the most extreme weather conditions, the external aluminium frame also never needs repainting for the lifetime of the installation.

Thermal performance

VELFAC windows offer U-values as low as 0.8W/m2K for triple glazed units. The slim frame contributes to excellent thermal (and acoustic) insulation as glass is a better insulator than the frame.

Sustainability

Sustainability is fundamental to the VELFAC design philosophy. All materials used are responsibly sourced, wood treatments are water-based, and every window unit is 93% re-usable.

Security

VELFAC 200 windows are Secured by Design approved and offer a range of security features including internal glazing beads (to prevent the external removal of glass panes), and multi-point locking systems. The external aluminium frame is also highly resistant to forced entry.

Glass options and accessories

VELFAC offers a range of glazing options to customise window performance, including a selection of opaque designs for added privacy and security. VELFAC-designed handles, hinges, restrictors and other accessories are also available.

Frame finishes

The standard VELFAC frame features polyester-powder coated external aluminium and painted or lacquered internal timber. The frame can be finished in different colours inside and out in any of the full range of RAL colours, or in 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.

Composite frame

The signature VELFAC frame combines durable external aluminium with natural, welcoming internal timber. By placing the moving aluminium sash directly in front of the fixed timber frame the window delivers a ‘floating sash’ effect, further emphasised by the recessed weather seal. The slim frame maximises natural light while uniform sightlines deliver an identical external appearance for every window unit, irrespective of opening function, manual or motorised operation, or whether double or triple glazed.

CONTACT US

Got a question you want answered?

If you have any questions or would like to know more please use the contact form below to get in touch with Keystone.