Winflex® Optima Vario

Winflex® Optima Vario


Winflex® Optima Vario is a special membrane for fast and reliable sealing of abutment joints on windows and exterior doors in accordance with the recommendations of the RAL Quality Assurance Association installation guidelines for windows and front doors and DIN 4108-7.

Winflex® Optima Vario allows the abutment joint to dry out from the inside or outside, depending on weather conditions, since the Winflex® Optima Vario water vapour diffusion characteristics allow it to adapt to the physical properties of the building structure, thus assisting optimal drying of the abutment joints. 

The same Winflex® Optima Vario tape can be used for internal and external sealing, in both cases blocking moisture from penetrating the joint.

Customer benefits

  • a single tape for internal and external abutment joint sealing – no danger of confusion, reliable planning, reducing stocks by half
  • numerous variants for any installation situation
  • optimal drying of the abutment joint 
  • structural movements are absorbed thanks to transverse stretchability / flexibility
  • strong adhesion of the adhesive strip to all types of window frames 
  • full-surface self-adhesive tape underside with application-friendly, split cover foil, equipped with the BOSIG High Tack adhesive 
  • perfect handling and optimal workability due to soft and pliable consistency and many types with and without self-adhesive strips to match all structural conditions

Product Information

Property Data Notes
Standard roll width 70 / 100 / 150mm special dimensions are available on request.
Length of roll 40 m


Technical Information Winflex® Optima Vario [PDF - 328 kB]

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