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PENOSIL Window & Door

PENOSIL Window & Door is silicone sealant for weathertight glazing and sealing.


Fast polymerization and development of bond strength with a wide range of surfaces enables Penosil Window & Door silicone sealant to be exposed to water just 3 hours after application. Rain will not affect its performance in terms of durability, adhesion or elasticity.


Throughout it’s life as a seam seal on a range of different surfaces. Window & Door silicone maintains its flexibility, even when exposed to vibration or structural expansion and contraction. Window & Door silicone forma an extremely tough, yet flexible surface.


Once the bond has formed, Window & Door silicone is unaffected by water or UV exposure. Freezing/thawing may cause structural movement but due to the elasticity of Window & Door silicone, its seal quality will not be affected. Performance is guaranteed in all climates from -40 °C to +150 °C.



  • Transparent
  • White


  • Indoor & outdoor
  • 100% waterproof
  • No color change

Adheres to:

  • PVC
  • Wood
  • Glass
  • Aluminium
  • Concrete
  • Brick
  • Most plastics

Application areas

  • Glazing and weather sealing of wood, aluminium and plastic windows and doors.
  • Sealing of interior and exterior perimeter joints.
• Permanently flexible, even at low temperatures • Shrink-resistant. It will not harden and remains flexible when exposed to extreme heat and UV • Chemical-resistant. Silicone is unaffected by cleaning products and detergents used in the home • Waterproof. Silicone cannot be washed away by rain or shower water and maintains full adhesion


10 Year minimum life means more than that! It is:

  • a reliable product;
  • sustainable and durable;
  • a product with long-lasting properties: permanently flexible,
    water and UV-resistant, crack and freeze-proof.

It also means:

  • YOU SAVE MONEY. Without the need to repair sealed areas, you save
    the cost of replacement materials and labour as well as time;
  • YOU HELP PRESERVE THE ENVIRONMENT. With less products used
    over a longer period, less waste goes into landfill or to pollute nature.