Metal-Cored Polymer Root-Resistant Waterproofing Membrane

Product Overview

A multi-layer composite system engineered for waterproofing and aggressive root protection. Manufactured via co-extrusion:

Core Layer: metal foil (Al/Cu, 0.1-0.4mm) - Primary root barrier

Waterproofing Layer: MAH-grafted PE resin (dual-sided) - Hydraulic seal + secondary root resistance

Structural Interface: Non-woven geotextile - Cementitious adhesion layer

Growth Media: Customizable top geocomposite (filtration/storage)

Key Features

Certified Root Resistance

FLL Class A certification (25-year efficacy)

Blocks Ficus and Bambusa species roots

Hydraulic Performance

Water vapor transmission: <0.01 g/m²·24h (EN 1931)

Hydrostatic resistance: 1.5 bar/168h (EN 1928)

Mechanical Strength

Puncture resistance: ≥800 N (EN 14418)

Peel strength: ≥5 N/mm (EN 12316-2)

Chemical Resilience

pH 2-12 stability (ISO 175)

Salt spray resistance: 2000h (ISO 9227)

Installation Integrity

Direct cementitious adhesion (bond ≥1.5 MPa, EN 1542)

Self-sealing damage containment

Layer Functions

Technical Specifications

Applications

Intensive Green Roofs: >150cm soil depth

Infrastructure Protection:
Highway tunnels, railway cuttings

Contaminated Sites:
Brownfield redevelopment

Critical Zones:
Nuclear containment landscapes
Heritage structure preservation