VELFAC
VELFAC In
An inward-opening timber-aluminium window and Juliette-door system developed for safe ventilation and internal cleaning.
What this system is designed to do
An inward-opening timber-aluminium window and Juliette-door system developed for safe ventilation and internal cleaning.
Where we would specify it
It is especially useful for upper floors, multi-storey buildings, French balconies and basement windows.
Features and performance
- Inward-opening operation
- Tilt-and-turn ventilation
- Safe cleaning from inside
- Windows and Juliette doors
- Triple glazing
- Coordinated with VELFAC 200
Technical specifications
Colours and finishes
Colours and finishes
Specified inside and out.
A powder-coated aluminium exterior that never needs painting, and an FSC® certified pine interior painted or clear lacquered to suit the room. The two are chosen independently.
Outside
- Material
- Aluminium
- Finish
- Polyester powder coat, matt (gloss 30) or glossy (gloss 77)
- Glazing bars
- Aluminium, in the sash colour
- Care
- Never needs painting; wash with the glass a few times a year
Inside
- Material
- FSC® certified pine
- Finish
- Painted (gloss 20), or clear lacquer at extra cost
- Note
- Lacquered wood darkens with age and shows its finger joints
- Glazing bars
- In the frame colour
Standard colours 28
Select colours to add them to your project enquiry.
Every standard colour comes in gloss or matt, except RAL 1035 Pearl beige, which is made in 88% gloss only and takes longer to arrive.
The full RAL Classic range
Over 200 RAL Classic colours in all. Those outside the standard range cost extra: gloss 30 or 77 on aluminium, gloss 20 on wood.
Also available
- Glazing beads Supplied in grey. RAL 7035Light grey
- Granite textured coatings A powder coat that looks and feels like rough-cut granite, from white through greys and blues to black. VELFAC’s UK team advise against it beside aluminium cills or pressings, as a colour match cannot be guaranteed.
- Metallic coatings A powder coat with a metallic sheen, offered alongside the granite finishes as a special option. Like granite, it is quoted per project.
- Anodised finishes A protective anodised surface in bronze, silver or black. It is a natural process, so shades can vary between elements and from the sample.
- Raw aluminium Aluminium left without surface treatment, subject to VELFAC’s reservations. Not available on sandwich panels.
- NCS colours A range of NCS colours for the timber inside, at extra cost.
Your selection
Colours on screen are a guide only, and pearl and metallic finishes cannot be shown. Add your choices to your project enquiry and we will go through them with you.
Add to project enquirySource: VELFAC product database, colours, materials and surface finish; VELFAC “Frame colours and finishes”, September 2026. Glazing bead colour: VELFAC, September 2026.
FAQs
Common questions, answered.
The essentials on the VELFAC In: what it is, how it performs, the options, and where it fits best.
Still have a question?
Our team can talk you through the detail for your project.
What is VELFAC In?
An inward-opening timber-aluminium window and Juliette-door system developed for safe ventilation and internal cleaning.
How does VELFAC In perform?
Published system information states Uw values down to 0.8 W/m²K with 48 mm triple glazing, sound reduction of Rw 33–46 dB depending on the glazing, and a 10-year warranty.
Which design and specification options are available?
Tilt-and-turn, side-hung, bottom-hung, fixed-casement and door arrangements are available. VELFAC In is supplied with a VELFAC 200 system order.
When would Eco Home Windows specify this system?
It is especially useful for upper floors, multi-storey buildings, French balconies and basement windows.
Downloads
Drawings and technical data.
20 files for this system, published by VELFAC. Tell us who you are once and everything here opens for the rest of your visit.
System drawings 1 Frames, sections and system overviews
Interface details 4 Head, cill and threshold details by wall construction
Size limits 6 Minimum and maximum sizes for each opening type
Free opening and escape 1 Clear opening calculations for ventilation and egress
Thresholds 1 Threshold options by door type
Couplings and corners 3 Joining elements and corner solutions
Passivhaus data 3 Frame U-values and glazing data for PHPP modelling
Environmental declarations 1 EPDs and environmental data
Before you download
Who should we send this to?
Planning a project?
Let’s start a conversation.
Tell us about your project and we will help you understand the right next step.