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HERMEQ NorwayRoot Barrier C3
Product Highlights
- Triple-Coated Barrier – Withstands 4,500N puncture force to block roots and invasive species.
- Long-Term Durability – Over 50-year buried lifespan under recommended soil conditions.
- Horizontal & Vertical Use – Suitable for installations in trenches or surface-level foundations.
SKU GT247807
Quickest Available Delivery: Quickest Available Delivery: 5 Day Delivery
The Root Barrier C3 is engineered for demanding applications where tree roots or invasive species pose a threat to infrastructure. Designed as both a physical barrier and impermeable weed membrane, it effectively separates root systems from surrounding environments, protecting services, buildings and landscaping elements from structural damage and soil instability.
This membrane is made from triple-coated, twin-reinforced polyethylene with exceptional puncture resistance (4,500N). Whether installed horizontally or vertically, it offers unparalleled root containment and weed suppression. It resists damage from natural acids, alkalis, bacteria and fungi, while being UV stabilised for above-ground durability. The material is CE-marked, meeting environmental and engineering compliance for professional use.
- Multi-application versatility – Ideal for tree pits, service channels, building foundations and Japanese Knotweed barriers.
- Subsurface protection – Prevents root penetration that causes subsidence, fractured pipes or pavement damage.
- Environmental resistance – Withstands biological and chemical soil conditions across diverse projects.
- Flexible installation – Can be placed around or beneath structures without cracking or folding.
- 50+ year life expectancy – Long-term root and weed control under natural soils and temperature ranges.
Installation is straightforward: trench placement against root zones, overlapping and sealing with lapping tape ensures airtight, rootproof protection. It’s critical for tree pits near buildings, roads or utilities, or to mitigate aggressive rhizomes like Giant Hogweed. The Root Barrier C3 can also be paired with Tree Guards, Tree Mats and Tree Protection Fencing for full-scope biosecurity coverage.
Approved for use in containment of invasive species under guidance from the Environment Agency, this membrane meets the stringent requirement for Japanese Knotweed management. Its 50-year durability ensures compliance and peace of mind for any development, public works, or civil engineering projects.
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- Root Barrier Applications
Used around tree pits, foundation perimeters, and service ducts to stop root invasion and weed growth. - CE Marked Material
Meets EU engineering standards for impermeability, puncture resistance and stability. - Install Friendly
Flexible enough for tight spaces, and compatible with HERMEQ tape and sealing systems.
This root barrier is a trusted solution across multiple industries. It offers dependable protection beneath paved areas, utility zones and landscaped surfaces. Installers benefit from reduced rework due to its high tear resistance and fit-for-purpose membrane design. The embedded polyethylene weave also enhances tensile strength during backfill operations. Lightweight yet incredibly tough, it’s ideal for use as a below-ground weed membrane or vertical root containment wall.
With UK urban areas facing tighter regulations on invasive weed spread, Root Barrier C3 provides a straightforward method to prevent damage and meet compliance. From highways and rail infrastructure to schools and new builds, its dual role as a weed membrane and barrier gives specifiers and groundworkers an all-in-one containment solution. Once installed, you’ll reduce costly repairs, soil disturbance, and environmental impact.
Material: Triple Coated, Twin Reinforced Polyethylene
Puncture Resistance: 4,500N
UV Stabilisation: 400 KLy
Colour: Black
Weight: 365g/m2
Life Expectancy (Buried): Over 50 years in natural soils (pH 4–9, <25°C)
Life Expectancy (Exposed): Approx. 7 years in UK conditions
What does the Root Barrier C3 protect against?
It blocks root intrusion and stops invasive plants like Japanese Knotweed and Giant Hogweed.
How is this root barrier installed?
It can be laid vertically or horizontally using trench systems with lapping tape and backfill support.
Is it suitable for long-term weed membrane applications?
Yes, its impermeable design and strength make it highly effective as a durable weed membrane.
Can it be used near buildings and services?
Yes, it prevents damage to foundations, pavements, pipes and cables by halting root spread.
