Roof Sealants


CPS Limited is a supplier of Fischer DDK all weather roof sealant

The permanently elastic joint sealant with a strong hold on all substrates.


  • Sealing of roofing membranes
  • Grouting roof penetrations such as chimneys or light domes, as well as edge connections
  • Sealing of metal and plastic gutters
  • Sealings around antennas and ventilation ducts
  • Sealing of chimney flashings
  • Sealant for metal structures

Building materials

  • Concrete
  • Bitumen sheeting
  • Roofing felt
  • Stainless steel
  • Wood
  • Clinker brick
  • Copper
  • Masonry
  • Metal
  • Brick
  • Zinc


  • Thanks to the high elasticity of 25%, DDK is ideally suited to high-stress

joints. This guarantees long-lasting jointing.

  • DDK holds without a base coat, including on moist and bituminous

substrates, and is therefore suitable for all applications in the roofing area.

For a high degree of economy.

  • The immediate rain resistance allows for external application in all weather

conditions, thus avoiding interruption of work.

DDK is non-corrosive, and thus can be used on aluminium, copper and

zinc-plated surfaces. This offers maximum flexibility.


  • Chemical base: 1-component synthetic rubber
  • Permanently elastic
  • Highly transparent formulation
  • Skin formation time: 15 – 20 minutes
  • Processing temperature: +5°C to +40°C
  • Temperature resistance: -25°C to +100°C
  • Permitted overall deformation: 25%
  • Allows for emergency roof repairs
  • Non-corrosive
  • Very good resistance to weather, ageing and UV
  • Compatible with paint
  • Paintable
  • Frost-protected in the cartridge

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