The innovative sash rebate seal provides extra thermal insulation. And the enhanced static properties also mean larger window sashes than before.
This new system already fulfils as standard the requirements for low-energy houses. This system is also available with aluminium covers, as an AluFusion system, and for passive houses. Uf values from 1,0 to less than 0,8 W/(m²K), depending on the design.
At the same time this opens up great design potential for forms and colours on the various surface variants presenting plain colour or woodgrain laminates or blank aluminium.
This new system's intelligent underlying design provides an unusual boost to value in the form of thermal and sound insulation, security, and economic efficiency.
This system also sets an example from the ecological viewpoint – The KOEMMERLING brand is the first key producer in the world to manufacture profiles not only with regrinds in virgin window PVC-U, but also exclusively with lead-free PVC with "green" stabilisers based on calcium and zinc.
Thermal insulation coefficient – U value
Uf = 1,0 – 0,77 W/m2K (standard system)
Lower than 0,8 W/m2K (passive house system)
Uw from 0,67 W/m2K (according to the specific configuration, dimensions and glazing)
Glazing possibilities: 24 mm - 54 mm
Sound insulation value up to Rw = 48 db
Tested performances at IFT Rosenheim-Germany:
Wind resistance(according to EN 12210:2000): Class C5/B5
Water tightness (according to EN 12208:2000): Class 9A
Air permeability (according to EN 12207:2000): Class 4