Mapei

Mapeproof Swell – Hydro-Expansive Hydrophilic Sealant Paste

$59.95 AUD
$59.95 AUD
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Mapeproof Swell is a single-component, hydro-expansive sealant designed for waterproofing concrete joints, penetrations, and cracks exposed to water ingress. It forms a flexible, watertight seal that expands on contact with water, preventing leaks in critical areas such as retaining walls, basements, tanks, and pipe penetrations.

Supplied in easy-to-use cartridges, Mapeproof Swell bonds strongly to damp or uneven concrete surfaces and remains stable under hydrostatic pressure when properly confined. Once cured, it expands in all directions within the joint, creating a durable waterproof barrier for both new builds and remedial works.

• Hydrophilic rubber-based paste that expands on water contact
• Provides watertight seals under hydrostatic pressure
• Bonds to damp or uneven concrete surfaces
• Suitable for positive and negative waterproofing conditions
• Easy to apply with standard extrusion gun
• Flexible and non-corrosive formulation
• Designed for confined joints, cracks, and pipe penetrations

• Sealing pipe penetrations through concrete walls
• Sealing cold joints and construction joints in reinforced concrete
• Sealing formwork spacers and service entries
• Preventing water ingress in cracks or voids
• Waterproofing light and drainage fittings in pools and tanks
• Compatible with Mapegrout repair mortars and Lamposilex hydraulic plugs

• Type: One-component hydrophilic rubber paste
• Colour: Light grey
• Density: 1.25–1.30 g/cm³
• Volumetric expansion: ≥100% in water
• Elongation: >700%
• Shore A hardness: 32
• Application temperature: +5°C to +40°C
• Skin formation: 180–200 mins
• Polymerisation rate: 2 mm per 9 hours
• Coverage: approx. 3 linear metres per 320 ml cartridge
• Packaging: 320 ml cartridges (box of 6)
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