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Donseal SL445
One component elastomeric self-levelling polyurethane sealant (Formerly known as Flexseal SL445)
  • Very easy and economical to use.
  • Single component.
  • Easy to apply self leveling sealant reducing waste.
  • Excellent weatherability.
  • No primer required on most substrates.
  • High movement accommodation factor (25%).
  • High service temperature range.
  • Extremely elastic with high durability.

Donseal SL445 is a one component self leveling polyurethane based elastomeric sealant which cures under the effect of atmospheric humidity to form a flexible and resistant joint.


Donseal SL445 is designed for use in horizontal expansion joints, interior and exterior joints and floor joints such as:

  • Pavements and sidewalks.
  • Balconies and Terraces.
  • Warehouses and garages.
  • Plazas and decks.
  • Industrial floors.
  • Pitch pans.

Donseal SL445 is available in 20.2 fl . oz (600 ml) sausages, larger packaging options are available upon request.

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Donseal SL445
Donseal SL445