For unrivalled energy efficiency.


For unrivalled energy efficiency.

  • Outstanding thermal insulation value Uf= 0.95 W/(m²K)
  • Passive house suitability as defined under the ift guideline WA-15/2 – Uwvalue = 0.80 W/(m²K).
  • Highest thermal insulation values thanks to proEnergyTec technology.
  • Reliable load transfer from heavy glazing weights to the central steel reinforcement.
  • Classic white, laminated in woodgrain or plain colours, and in the innovative surface technology proCoverTec.
  • Fully recyclable.
  • All PVC-U profiles are produced with lead-free stabilisers based on calcium and zinc.


Climate change is a reality and one of the biggest factors affecting our futures and those of our children, with Passivhaus is becoming a more important building standard than ever. The Passive House is the most energy efficient building standard consuming no more than 15kWh of heating energy per sq metre of living environment, which equates to 1.5 litres of heating oil.

Passivhaus standards result in a reduction by 90% of heating in existing buildings and 75% in new properties and this is achieved with cutting edge glazing technologies. KÖMMERLING’s System 76 platform is one of the slimmest windows across the globe that can achieve Passivhaus and certification by ift Rosenheim has backed this up.

proEnergyTec profiles are used along with triple glazing in the AluClip Pro and AluClip Zero design variants and these technologies and specifications are also harnessed in the residential and lift and slide PremiDoor product solutions. Controlled ventilation and heat recovery are also part of the overall building envelope specification under Passivhaus.

Slender profiles and large glazed areas can now be realised with our certified Passivhaus solutions. The ift certification of WA-15/2 was issued in 2011 and calculates the Uw value under DIN EN ISO 10077-2, along with measurement via the hot box method, which offers more realistic application values than other methods. Ultimately the Uw value must be no more than 0.80 W/(m2k), but please contact us for further project details.

Range of colours

The hybrid nature of our products means that all aluminium external faces can be either powder coated, anodised or painted, literally opening up hundreds of different design possibilities.

On the inside, there’s the option of a neutral flat white, life like woodgrain options including English Oak, Irish Oak and pine, along with laminated solid colours. For the ultimate in performance there’s the unique surface finish technology of proCoverTec, providing true water and dirt repellent properties.

For further information visit


Unit 15c Topbarn Business Centre
Worcester Road
Holt Heath


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