Technical approvals completed

HWL Trade Frames’ manufacturing process for its non-glass bonded Residence 9 Window has received full technical approvals from the Residence Collection.

Published last month, the new R9 technical manual includes the use of Timberweld sash-welding technologies as an approved manufacturing process for the first time. This marks the culmination of more than a year-long process of testing, delivered by HWL in partnership with the Residence Collection, to achieve technical approvals.

Mark Haley, managing director at HWL Trade Frames, said: “It’s been an involved process, the outcome however, has been worth it because it gives us, our customers and R9 new commercial reach. Getting rid of the requirement to glass-bond R9 delivers so many savings and efficiencies. We knew how good the window was but we needed an audit trail of proof. Having completed all relevant testing last year, Residence Collection has given Timberweld sash-welding technologies approved manufacturing status with inclusion in the R9 technical manual. It’s a vindication of where we’ve gone and recognition of the work that the entire team has put in.”

The application of Timberweld sash-welding technologies allows HWL to butt weld window sashes inside and out, replicating the aesthetic delivered in a 90° mechanical joint. This increases sash corner strength, which in most configurations eliminates the requirement to glass bond IGUs, historically used in R9 fabrication to give the system structural strength.

With all of its pre-existing customers now buying its non-glass bonded R9 windows, HWL argues installers can cut their installation costs by up to a third by switching from buying in mechanically jointed sashes, to its Timberweld R9 sash by reducing weight and simplifying handling and installation costs.