Structural composite
Aluminium outside does the structural work and takes the weather; the pine inside stays dry and warm to the touch.
VELFAC windows in London
VELFAC wood-aluminium windows, solid aluminium outside and pine inside, supplied and fitted across London from our Ruislip showroom.
01VELFAC windows
What are VELFAC windows?
VELFAC windows are structural composite windows: solid aluminium outside carries the glass, while an FSC pine frame sits on the warm side. Architects and self-builders specify them for large glazed elevations and tight thermal targets.
Uniform sightlines
Fixed and opening lights share one 54 mm external profile, so from the street you cannot tell which opens.
Dual colour
One colour for the facade, another for the room: RAL, anodised or Granite outside, 170+ lacquers or clear-lacquered pine inside.
Doors to match
Sliding and terrace doors in the same wood-aluminium build, so doors and windows read as one grid.
02Our work
Fitted by our own team.
03Technical specification
Specification.
Every option is confirmed at survey, against your opening and your build stage.
- Construction
- Structural composite: aluminium outside, FSC pine inside
- External sightline
- 54 mm, identical for fixed and opening lights
- Glazing
- Double or triple, packs up to 48 mm, argon filled
- Thermal performance
- Uw from 0.8 W/m²K, triple glazed (VELFAC 200 Energy)
- Acoustics
- Rw 32 to 43 dB, with asymmetric glazing at the upper end
- Security
- PAS24 tested options available
- External finish
- Any RAL powder coat 60 to 120 microns, anodised or Granite texture
- Internal finish
- Dual colour: 170+ lacquers or clear-lacquered pine
- Shapes
- Glass-to-glass corners, arches and rakes
- Ventilation
- Concealed trickle vents, Approved Document F
04Asked before every survey
The questions that matter.
What makes VELFAC a composite rather than alu-clad?
The solid aluminium outside carries the glazing unit, and the pine frame sits deep behind the seal on the protected side. In alu-clad, thin aluminium covers a timber frame that still does the structural work, and moisture trapped under warming metal can rot it.
Why do VELFAC windows open outward?
VELFAC 200 Energy follows Scandinavian logic: wind presses the sash onto its seals, rain runs off and the deep sill stays free. By a narrow passage or external blinds, the VELFAC In tilt and turn opens inward; keep its sill clear. We advise at survey.
Can I use VELFAC windows in a conservation area?
Usually not the slim 200 Energy profile. Conservation officers reject changes to reveal depth, bead profile and opening method whatever the thermal performance. For protected streets, VELFAC Classic reproduces the look of putty glazing. The council has the last word, so ask before you apply.
Is a wood-aluminium window really maintenance-free?
Almost: minutes a year, no repainting. Wash the aluminium with soap and water and check the lacquered pine annually, touching up scratches. Vacuum the gap between aluminium and pine now and then, and give the hardware acid-free oil yearly, a manufacturer's warranty condition.
When should I order VELFAC windows for a self-build?
Earlier than replacement windows. Units are made to order; lead time depends on finish and colour, confirmed with your quote. Order from the architect's drawings, brickwork held to millimetre tolerances. Timber frames wait until the building is watertight; our team plans lifting and sequencing.
05Start here
Start with a conversation.
- A render of the finished result before you commit
- Showroom in Ruislip, opposite Ruislip Manor station, with parking
- One team from survey through to installation
Prefer to talk?+44 20 3375 8609Not ready for prices? Send us a message instead