SIKATOP 209 (AB)

SIKATOP 209 (AB) Flexible Waterproofing Mortar

SIKATOP 209 (AB) is a two-component, pre-dosed flexible waterproofing mortar engineered for demanding applications where durability and flexibility are essential. Formulated with cement, selected aggregates, and modified polymers, this advanced mortar delivers superior waterproofing protection for concrete, masonry, and stone substrates.

Key Features

• Low modulus of elasticity – Exceptional flexibility reduces cracking risk and bridges both shrinkage cracks and micro-cracks
• Water impermeable & vapour permeable – Prevents water ingress while allowing structures to breathe naturally
• Pre-dosed formulation – Eliminates guesswork and ensures consistent, reliable results on every application
• Excellent substrate adhesion – Strong bond on concrete, mortar, stone, and brick surfaces
• Positive and negative pressure rated – Performs reliably under hydrostatic pressure from both sides

Performance Benefits

• High resistance to frost and de-icing salts – Ideal for exposed structures and harsh climates
• Slows carbonation progression – Extends concrete service life and structural integrity
• Superior crack bridging properties – Prevents water infiltration through fine cracks

Recommended Applications

• Swimming pools, tanks, and water-containing structures
• Interior and exterior basement waterproofing
• Buried wall protection and underground structures
• Repair of frost-damaged surfaces and de-icing salt exposure
• Marine environment concrete protection
• Potable water contact applications