Waterproofing Methods

Description

Liquid-applied coating that cures to form seamless, flexible rubber-like membrane. Available in acrylic, polyurethane, and bitumen-based formulations.

Best For

• Exposed terraces and roofs
• Complex geometries
• Metal roofs
• Balconies and podiums

Advantages

• Flexible - accommodates movement
• UV resistant formulations available
• Self-leveling properties
• Crack-bridging capability (up to 2mm)

Description

Bitumen-based membranes applied hot (torch-applied) or cold (self-adhesive). Traditional method with proven track record.

Types

• Torch-Applied: SBS modified bitumen sheets applied with flame torch
• Self-Adhesive: Pre-backed with adhesive, no heat required
• Hot Mop: Liquid bitumen applied hot in multiple coats

Best For

• Foundation waterproofing
• Below-grade structures
• Terrace base layer under brickbat

Advantages

• Excellent water resistance
• Durable (15-20 years)
• Good for areas without foot traffic
• Cost-effective for large areas

Limitations

• UV degradation (needs protection layer)
• Torch application requires skilled labor
• Not environmentally friendly

Description

High-performance liquid polyurethane coating with exceptional elasticity and durability. Premium waterproofing solution.

Best For

• High-movement areas
• Parking decks
• Pedestrian bridges
• Premium residential projects

Advantages

• Superior elasticity (500% elongation)
• Excellent UV and chemical resistance
• Long service life (20-25 years)
• Can accommodate structural movement

Description

Penetrative system containing active chemicals that react with moisture and concrete byproducts to form insoluble crystals that block water pathways.

How It Works

Crystals grow deep into concrete capillaries, becoming part of the concrete structure. Has self-healing properties - new crystals form if minor cracks develop.

Best For

• Water tanks (potable water approved)
• Basement negative side waterproofing
• Below water table structures
• Hydrostatic pressure conditions

Advantages

• Becomes integral part of concrete
• Self-healing properties
• Can withstand high hydrostatic pressure
• Non-toxic (suitable for potable water)
• Permanent solution

Description

Pressure injection of specialized resins into cracks and voids for repair and waterproofing.

Types

• Epoxy Injection: For structural crack repair in dry conditions
• Polyurethane Injection: For active leaks, expands on contact with water
• Acrylic Gel: For soil stabilization and void filling

Best For

• Active leaking cracks
• Structural crack repair
• Curtain grouting behind retaining walls
• Lift pit leakage