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Crossing Perforation– Stopper | Effisus
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Crossing Perforation– Stopper | Effisus

  • Use

    Roofs, facades, HVAC
  • Applications

    Construction, reparation
  • Characteristics

    UV-resistant, seals any size penetration, works with various materials, waterproof, installs in under 15 minutes
  • Format

    Complete kit

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More about this product

Effisus provides weatherproofing solutions for building envelope construction with a range of solutions for roofs and facades. Weatherproofing helps to maximize a building's performance and increase its lifetime. Effisus focuses on optimizing solutions for every project, supported by extensive consulting services.

Effisus Stopper seals penetrations of any size or configuration, on flat roofs, sloped roofs, and facades. It works on the most common roofing materials, such as asphaltic membranes, PVC, TPO, EPDM or metal.

Stopper is a versatile solution, with precast molds and innovative sealants, and quick and easy installation. There is no need for mechanical fastening and it is suitable for any penetration configuration.


  • Pre-fabricated molds that can be used to achieve any dimension or configuration
  • Pourable, self-leveling and structural sealants with high resistance to UV light, permanently flexible and without solvents


  • HVAC penetrations
  • Solar panels
  • Equipment support structures
  • Guards
  • Electric cables
  • Antennas
  • Sloped roof
  • Vertical walls
  • Ducts with temperatures up to 204ºC

Penetration Sealant - Stopper


  • Easy to install – installation in under 15 minutes.
  • Resistant – waterproof, UV and ozone stable, resistant to ice and standing water.
  • Universal – compatible with all membranes and materials (TPO, PVC, EPDM, Bitumen, Concrete).
  • Flexible design – adaptable to any size or configuration.
  • Economic – at a fraction of the cost of any traditional solution.

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