Replicating slim sightlines of classic steel windows on both new-build and refurbishment projects, Novastruct’s GT 70 S Open-In Window combines refined elegance with the durability and sustainability advantages of aluminium, delivering an appealing heritage aesthetic designed for the demands of modern and future architecture.
Available in both tilt-before-turn and turn-only configurations, GT 70 S provides certified security and excellent thermal performance.
Supporting glazing up to 64mm, GT 70 S can also be specified to achieve a distinctive sculpted profile.
GT 70 S is fully supported by Novastructs's industry-leading technical service, helping you realise its full potential on your next project.
To System Downloads
System Information
Technical Details
Performance
U value - DGU 1.0 | TGU 0.5
Windload - Class AE2400
Air Permeability - Class 4
Watertightness - Class 9A
Glazing weight - 300kg
Security - PAS24
Acoustics - C;Ctr = 41 (-2, -6) dB
Key Features
Maximum size - 2400mm
Frame width - 24mm - 64mm
System depth - 72mm - 160mm
Minimum sightline - 24mm
Glazing thickness - 22mm - 60mm
Glazing type - Double, Triple
Drainage and ventilation - ✔
Multi-point locking - ✔
Restrictor - 100mm
Open options - Open out, open in
Finishes - 130+
Arrangements & Weight Limitations
Top hung – X
Side hung - (130kg)
2 stage opening – X
Bottom Hung - ✔ (50kg)
TBT - ✔ (130kg)
Turn-Tilt - ✔ (130kg)
French casement - ✔ (130kg)
Parallel opening – X
Fixed Light - ✔
(300kg)
Horizontal pivot - X
Vertical pivot - X
Key Features and Benefits
Slim sightline design reminiscent of traditional steel windows, offering an authentic steel-like appearance with the added advantages of aluminium, including its excellent strength-to-weight ratio
Ideal for use in both composite and ribbon window configurations
Available in tilt-before-turn or turn-only operating options
Comprehensive selection of structural and coupling mullions available
Optional bevelled beads or decorative feature caps provide a distinctive sculpted finish to the façade, particularly well suited to heritage-style projects
Integrated concealed drainage system to maintain clean external aesthetics
Compatible with glazing units up to 64mm
Features
Thermal
The GT 70 S utilises a multi-chamber thermal break core to deliver strong thermal efficiency while ensuring compliance with Approved Document L and Scottish Building Standards Part 6
Weathering
Independently Weather Performance Tested to BS EN 12207: 2016:
Air Infiltration (BS EN 12207): 600 Pa
Watertightness (BS EN 12208): 600 Pa
Wind Resistance (BS EN 12210): 2400 Pa (Windload)* and 1750 Pa (Safety)*
*Subject to correct mullion and transom
specification based on span and project spacing requirements.
Security
Independently tested to PAS 24:2016
Box bead option available for increased security performance
Size and Weight Capability
Designed for high-performance and demanding applications:
Maximum size 2400mm
Fixed Light 300KG
Side Hung 130KG
Bottom Hung 50KG
TBT 50KG
Turn-Tilt 130KG
French Casement 130KG
Infill Width 60mm
Total Flexibility
Extensive range of structural and coupling mullions available
Optional bevelled beads or feature caps create a distinctive sculpted architectural finish
Safe and Sustainable
BRE Green Guide ‘A’ Rating
Design Considerations
The GT 70 S Slimline Renovation Window offers the following design configurations:
Inward Opening
Tilturn
Tilturn (Side Hung)
Tilturn (Bottom Hung)
Additional Information
Frame construction features a multi-chamber thermal break core, delivering strong thermal performance and full compliance with Document L
All frames utilise mechanically jointed and bonded corner assemblies
Installation is possible via direct fix methods or through twist-in fixing lugs
Revit/BIM
Novastruct’s BIM Models are downloadable in the Revit format and also available on request as IFC files. Our BIM Models provide users with 3D images of the products as well as the critical COBIE data to provide guidance through the whole design and construction process.
To System Downloads
