The APA Facade Systems design team have just developed a new thermally enhanced ST70 HI casement window system. Using the centre seal from our original ST70 HI, the new system includes new polyamides and new foam cores resulting in a substantial increase in thermal transmission, producing a whole window Uw value as low as 0.97W/m²K.
This system is available in a variety of styles including top hung, side hung, tilt and turn or as a parallel sash. It comes internally or externally beaded with multi-point locking for added security. The versatility of the locking mechanism used in the ST70 HI window allows the designers to incorporate extra-large sashes in the building.
The windows durability and performance characteristics regarding acoustics and weather tightness meet with the highest BS/EN standards, independently tested by a UKAS approved and certified facility. The ST70 HI is the perfect solution for multi-level residential developments.
You can view the product brochure below:
For more information regarding our ST70 HI range, get in touch with us here.
|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||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.