ALSAN® PATCH is a waterproofing product composed of high polymers for repairing purposes only.


Partial repair of roof waterproofing, non-trafficable terraces, cornices, gutters, chimney stacks, piping, etc... Repair is immediate, with an elasticity of up to 1300 %, excellent resistance to foul weather, mineral acids (max. conc. 10%), contains no bituminous product, excellent adhesion on a wide variety of decks.


  • Cans: 1 liter or 5 liters
  • Storage: at least 5 years in a cool, unopened container turned upside-down, away from any source of heat
  • Storage temperature: >5°C
  • Approximate consumptions: 1 to 2,5 liters/m²

Need more information ?

Contact us