The External Collection helps installers secure work on conservation areas and steel-replacement projects by offering a genuine heritage solution with all the benefits of modern performance.
With slim sightlines and authentic detailing, it's ideal for replicating the look of traditional steel — making it suitable for listed buildings and sensitive renovation projects. At the same time, it meets today’s performance standards, including U-values from 1.2 W/m²K and PAS24 security compliance.
This makes Decorio a go-to option for installers looking to secure high-value, specification-driven work where both aesthetics and regulations matter.
External Hinged Doors - 47mm Depth
- U Values from 1.5 W/m2K or Band C (based on 1.0 W/m2k glass centre pane)
- Multi-point locking compliant with building regulations
- Typical sightlines of 67.5mm across outer frame and sash
- Bespoke handle block heights allows various transom bar designs
- 15mm low threshold option available for disability access
- Handle block & handle on slave sash upon request
- Accommodates 4mm, 6mm, and 6.8mm glazing (24 or 28mm beading)
Min. Frame Width
625mm
1232mm
Max. Frame Width
954mm
1861mm
Min. Frame Height
1025mm
1025mm
Max. Frame Height
2154mm
2154mm
External Windows - 47mm Depth
- U Values from 1.3 W/m2K or Band B (based on 1.0 W/m2k glass centre pane)
- Complies with current building regulations inc. Document L & PAS24.
- Typical sightlines of 58mm across outer frame and sash
- BS 6375-1:2015 (air permeability, water tightness & resistance to wind load) accredited
- 25mm or 41mm astragal bar available to replicate steel-look effect.
- Accommodates 4mm, 6mm, and 6.8mm glazing (24 or 28mm beading)
- Odd leg outer frame available on request
Side Hung Width
293mm
700mm
Side Hung Height
370mm
1400mm
Top Hung Width
370mm
1400mm
Top Hung Height
293mm
1400mm
Fixed Frame
200mm
3000mm
External Bi-folds - 70mm Depth
- U Values as low as 1.2 W/m2K or Band B
- Complies with current building regulations inc. Document L & PAS24.
- Typical sightlines of 122mm across sash and sash
- 45mm transom bar available to replicate steel-look effect.
- Accommodates 4mm, 6mm, and 6.8mm glazing (28mm beading)
- Low ali threshold (15mm) available upon request
Side Hung Width
293mm
700mm
Side Hung Height
370mm
1400mm
Top Hung Width
370mm
1400mm
Top Hung Height
293mm
1400mm
Fixed Frame
200mm
3000mm
