Lift and slide doors
Internorm do not produce Bi-Folding doors for one simple reason, they could not offer a 30 year quality assurance warranty. Bi-Folds by default have multiple moving parts notably the running gear and hinges. These components limit the Warranty to Bi-Folding doors to 3-5 years on average. In terms of Thermal Efficiency the uW’s on Bi-Folding doors and air tightness are generally poor. Bi-Folding doors are essentially a UK trend, Europe by comparison opts for Lift & Slides. The benefits of the Internorm Lift & Slide are summarized as follows.
- 30 Year Quality Assurance Warranty
- Sliding doors elements upto 3.2m high x 2.9m wide
- uW 0.67-0.69
- Triple Glazed or Double Glazed options
- Level Threshold