Accreditation & Warranty


Our commitment to quality is supported by a comprehensive array of quality and safety
standards which guarantee our expertise.

Kitemark - Window Energy Ratings is a third party product certification scheme which will result in certification of the energy rating of the client's windows..
BS 7412 - the British Standard for quality in the manufacture of PVC-u windows. The standard itself specifies that the sections used are themselves manufactured to the requirements of other British Standards. Each window undergoes 3 "in process" inspections as well as an end of line inspection involving a 20-point check.
BS 7950 - the British Standard for the manufacture of PVC-u windows with enhanced security specifies the security hardware and construction methods to be used and adopted. Samples are taken 4 times a year to ensure compliance with the standard. The windows must successfully resist forced entry and manual intervention tests using various burglary tools for a minimum of 3 minutes.



Kömmerling - Is Europe's finest PVC-u window, door and conservatory profile system provider. Kömmerling products stand for high quality and economically prestigious systems and are highly regarded within the industry. It is Kömmerling products which The Definitive Collection is manufactured from.



Greenline - Kömmerling manufacture without the use of lead stabilizers, completely eliminating lead from the extrusion process. This change means that Kömmerling profile is one of the most environmentally friendly profile systems available.