Sika Waterproofing Membrane

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Sika Waterproofing Membrane is a flexible, high-performance sheet or liquid-applied membrane system designed to prevent water ingress in a wide range of below- and above-ground structures. Made from bituminous, PVC, TPO, or polyurethane-based materials depending on the system, Sika waterproofing membranes offer excellent durability, chemical resistance, and elasticity. They are used extensively in construction and civil engineering projects to protect structures from water damage, corrosion, and environmental degradation.

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Categories: CONSTRUCTION CHEMICALS, Waterproofing Agents Tags: Bituminous / Synthetic Membrane, Flexible Waterproof Barrier, Preformed Waterproofing System, Sika Waterproofing Membrane, Waterproof Membrane Sheet

Description

Uses

Primary Uses

Building & Construction

Used for waterproofing basements, foundations, retaining walls, and slabs on grade.
Applied beneath tiles in wet areas such as bathrooms, kitchens, and laundries.
Integral part of roofing systems for flat, sloped, and green roofs.
Used under screeds in balconies, terraces, and podiums for moisture barrier protection.

Infrastructure Projects

Protects tunnels, subways, and underground passages from groundwater infiltration.
Used in bridges, overpasses, and elevated structures to provide waterproofing over concrete decks.
Suitable for dams, canals, and reservoirs to ensure long-term impermeability.

Water Retaining Structures

Lining of potable water tanks and cisterns.
Used in swimming pools, artificial lakes, and water features.

Industrial Facilities

Provides waterproofing for tanks, pits, and secondary containment areas exposed to chemicals.
Used in processing plants and manufacturing facilities where water or fluid control is critical.

Secondary Uses

Agricultural Buildings

Waterproofs manure pits, silos, and agricultural water reservoirs.

Cold Storage & Food Facilities

Ensures moisture and vapor barrier in cold rooms and chilled storage areas.

Temporary Protection

Used during construction phases to provide temporary waterproofing and protection of sensitive structural elements.

Landfills and Waste Treatment Plants

Applied as a lining system to prevent leachate contamination in soil and groundwater.

PRODUCT KEY FEATURES

Basic Identification Attributes

Chemical Name (IUPAC): Varies (e.g., Polyvinyl chloride, Thermoplastic polyolefin, Bitumen-polymer blends)
Common/Trade Name: Sika Waterproofing Membrane
CAS Number: Varies by formulation
HS Code: 3921.90 (for plastic sheets); 6807.10 (for bituminous membranes)
Synonyms: Waterproof sheet membrane, liquid waterproofing membrane, Sika Membrane System

Physical & Chemical Properties

Physical State: Sheet roll or liquid (depending on type)
Color & Odor: Typically grey, black, or white; slight solvent or polymer odor (if applicable)
Thickness: Typically 1.2 mm – 4 mm (for sheet membranes)
Elongation: Up to 400% (depending on membrane type)
Tensile Strength: High – varies by material
Water Permeability: Zero (impermeable)
UV Resistance: Excellent in UV-resistant grades (e.g., TPO, PVC types)

Safety & Hazard Attributes

GHS Classification: Generally non-hazardous when cured; liquid types may contain flammable or irritant components
Toxicity: Low; follow safety guidelines for application of uncured material
Exposure Limits: None for sheet types; refer to SDS for liquid formulations

Storage & Handling Attributes

Storage Conditions: Store in original packaging in a dry, shaded area; avoid direct sunlight and high heat
Container Type: Rolls (for sheets); pails or drums (for liquid membranes)
Shelf Life: 12–24 months depending on type and storage conditions
Handling Precautions: Use gloves and eye protection; ventilate area if applying solvent-based liquid membranes

Regulatory & Compliance Attributes

Complies with international waterproofing standards (e.g., EN 13967, ASTM D 1970, ASTM D 412)
VOC-compliant for solvent-based membranes (where applicable)
Meets potable water safety standards (specific grades)
Manufactured under ISO 9001 and ISO 14001 certified processes
CE-marked for construction products in the EU

Environmental & Health Impact

Biodegradability: Not biodegradable; designed for long-term durability
Ecotoxicity: Low when used as intended
Bioaccumulation: Not expected

Sustainability: Some types (e.g., TPO) are recyclable

SAFETY HANDLING PRECAUTIONS

Safety Handling Precautions

PPE Required: Gloves, goggles, and protective clothing; respirator for solvent-based applications
Handling Guidelines: Avoid inhaling vapors or fumes; apply in ventilated areas
Storage Measures: Keep rolls flat or upright; prevent contact with sharp objects or heat sources

First Aid Measures

Inhalation: Move to fresh air; seek medical attention if dizziness or irritation occurs
Skin Contact: Wash thoroughly with soap and water; remove contaminated clothing
Eye Contact: Flush with water for 15 minutes; get medical help if irritation persists
Ingestion: Not likely for sheet membranes; for liquids, do not induce vomiting; seek medical attention

Firefighting Measures

Fire Hazards: Sheet membranes may melt or burn; liquid types may be flammable (if solvent-based)
Extinguishing Media: Foam, dry chemical, CO₂
Special Precautions: Use full protective gear and self-contained breathing apparatus

Hazardous Combustion Products: Carbon oxides, hydrogen chloride, hydrocarbons (depending on membrane type)