ST70 HI+ Tilt & Turn Window
Overview
The ST70 HI Tilt & Turn (residential) window brings commercial-grade performance into the modern home. It combines strong thermal insulation with flexible everyday operation, making it a practical and elegant choice for luxury apartments, family homes and multi-storey residential buildings. This inward-opening system is designed for comfort, efficiency and ease of use.
Thermal Performance
The frame uses eco-friendly polyamides and integrated foam cores to reduce heat loss and improve overall insulation. Thanks to this design, the ST70 HI Tilt & Turn (residential) window can reach whole-window U-values as low as 0.98 W/m²K. This helps create a more energy-efficient home and supports compliance with stricter performance requirements.
Flexible Operation
The system offers two simple modes of opening.
The tilt position provides secure background ventilation, making it ideal for bedrooms, living areas and upper-floor rooms.
The turn position allows full inward opening, which makes cleaning and maintenance fast and safe — especially in multi-storey buildings where external access is limited.
This dual functionality gives homeowners practical control over airflow and cleanliness without compromising safety.
Acoustic Comfort & Weather Protection
The window’s profile design and glazing options help reduce external noise, creating a quieter indoor environment. It also includes weather-tested gaskets and seals that protect against wind and rain. Because of this, the system is suitable for exposed locations and busy urban settings.
Design & Aesthetic Appeal
The ST70 HI Tilt & Turn (residential) window features slim, modern profiles that complement contemporary architecture. It works well as a stand-alone system or alongside other products in the ST range, helping designers create a consistent appearance across the façade.
[Download the ST70 HI Brochure]
For more information regarding our ST70 HI tilt & turn window system, get in touch with a member of our team here.
- Whole window Uw value as low as 0.97W/m2K (Triple Glazed)
- Tested to Pas 24 standards
- Fabricated using recycled aluminium and plastic materials
- Tested to EN12101 smoke ventilation
- Single or dual colour available
- Double or triple glazing up to 42mm in thickness
- New polyamides used in the window assembly
- Can be pre-assembled in-house saving installation time/cost
- Matching rebate doors available
- Identical sight lines throughout
- New foam cores to increase thermal performance
| Frame Depth | 70mm | |
| EN ISO 1077-1 | Uw Whole window value: * | As low as 0.97 W/m²K |
| BS 6375-1:2009 | Air: | Class 4 |
| BS 6375-1:2009 | Water: | Class E1050 |
| BS 6375-1:2009 | Wind: | Class A5 |
| BS EN ISO 717-1:2013 | Acoustic: | 60 dwb |
| BS 6375-2:2009 | Operating forces: | Class 1 |
| BS 6375-2:2009 | Mechanical strength: | Class 3 |
| BS 6375-2:2009 | Repeated opening & closing (30,000): | Class3 (Heavy Duty) |
| PAS 24:2012 | Security classification: | Certisecure |
*Whole window U values are a combination of the frame and glazing thermal performance and as such will vary with the specification of glass utilised. Please consult with the APA technical team for more specific performance information.
