JY-NTT Modified Asphalt Copper Base Root Puncture Resistant Waterproofing Membrane

Product Introduction

The JY-NTT Modified Asphalt Copper Base Root Puncture Resistant Waterproofing Membrane is a specialized waterproofing material designed for applications where plant root penetration is a concern, such as green roofs, terraces, and foundations. It consists of styrene butadiene styrene (SBS) thermoplastic elastomer as a modifier in the asphalt layer, incorporated with chemical root inhibitors to restrict root growth toward the waterproof layer without impacting overall plant development. The structure includes a composite copper tire base serving as the reinforcement layer, and polyethylene (PE) film applied as an isolation material on both the surface and underface.

This membrane forms a curled sheet format, providing a barrier against water infiltration while maintaining structural integrity under pressure. Standard specifications include a thickness of 4.0 mm, length of 10 m, and width of 1.0 m. It exhibits resistance to high and low temperatures, suitable for various climates, along with properties that address corrosion, mildew, and weather exposure.

Technical Specifications

Physical Dimensions

Material Composition

Performance Metrics

Product Features

• Reinforcement with Composite Copper Tire Base: Acts as a structural layer that resists punctures, abrasions, and tears, protecting against damage from both upper and lower surfaces.
• Root Penetration Resistance via Copper Ions: Inhibits meristematic tissue at plant root tips through copper ion action, directing roots away from the waterproof layer without impacting overall plant growth, ensuring long-term waterproof performance.
• Corrosion and Mold Resistance: Provides effective protection against corrosion and mold formation in various environmental conditions.
• High Tensile Strength and Elongation: Offers tensile strength of at least 800 N/50 mm and elongation of 40% or more, allowing adaptability to base shrinkage, deformation, and cracking.
• Temperature Tolerance: Maintains integrity without flowing at high temperatures up to 105°C or cracking at low temperatures down to -25°C, suitable for a broad operating range.
• Efficient Production Process: Facilitates oil production during baking, which helps lower heating temperatures and reduce gas emissions.

Performance Index

Application Cases of Root Barrier Materials

Root puncture resistant waterproofing membranes, such as those with modified asphalt and copper bases, are used in construction projects involving vegetation to prevent root damage while maintaining water barriers. Below are examples drawn from documented installations.

Residential Green Roofs: Gardenia Seaside Complex, Dziwnów, Poland

This multi-building residential development includes underground parking and semi-extensive green roofs with low-growing shrubs and grasses. The project addressed past leaks from bitumen layers in similar setups by using a thermoplastic membrane with an active polymer core that swells to seal punctures and doubles as a root barrier. Installed in phases covering over 33,000 square feet, the system passed electronic leak detection tests and has shown no leaks after one to two years of operation, reducing installation layers and costs compared to traditional bituminous options.

Public Facilities: King County Projects, Washington, USA

Several King County facilities incorporated modified bitumen membranes with copper elements for root resistance in extensive green roofs. For instance, the International Airport used a two-ply system with an APAO-modified base and a root-resistant top ply embedded with copper film and a moisture-retaining gel pack. Applied over concrete decks with drainage layers and 1-1.5 inches of soil, the setup aimed to support sedums and grasses. Outcomes varied; while the membrane held up, plant survival was low due to shallow soil and lack of irrigation, leading to weed growth. Similar copper-infused membranes were used at the Justice Center and regulator stations, where deeper soil (4-6 inches) and maintenance supported better vegetation establishment, though weed control required ongoing effort.

Educational Institution: BCIT Green Roof, British Columbia, Canada

At the British Columbia Institute of Technology, a custom green roof system featured a two-ply SBS modified bitumen membrane with a specific root-resistant formulation. The membrane was applied over the roof deck, followed by drainage and soil layers for sedum-based vegetation. This installation focused on durability in a damp climate, with the membrane providing protection against root penetration and constant moisture exposure.

Sustainable Housing: Grand Designs Project, Windermere, UK

A domed green roof on a sustainable home used a liquid-applied system that forms a seamless, flexible membrane resistant to root penetration. The application covered curved surfaces, integrating with drainage and soil for grass and wildflower growth. The membrane's elasticity accommodated structural movements, contributing to the project's environmental goals without reported failures in waterproofing.

These cases illustrate typical uses in green roofs for residential, public, and institutional buildings, where membranes with copper reinforcements help manage root risks in vegetated areas.

Roof greening design

Green roof design involves creating vegetated layers on building rooftops to support environmental benefits like stormwater management and urban heat reduction. These systems typically include structural support, waterproofing, drainage, root barriers, growing media, and vegetation. Designs vary by type: extensive (lightweight, low-maintenance with shallow soil for sedums and grasses), intensive (heavier, garden-like with deeper soil for shrubs and trees), or semi-intensive hybrids.

Key Design Principles

• Load Capacity: Roof structures must handle added weight from soil, plants, water, and snow. Extensive systems add 15-50 kg/m², while intensive ones can exceed 200 kg/m². Consult structural engineers to assess dead and live loads, ensuring compliance with local codes.
• Slope and Drainage: Limit slopes to under 40 degrees to prevent erosion; aim for a minimum fall of 1:60 for water flow. Include drainage layers with filters to avoid clogging, and outlets that handle overflow within an hour after heavy rain.
• Waterproofing and Root Resistance: Use durable membranes like modified asphalt with root puncture resistance, such as Great Ocean Waterproof's JY-NTT Modified Asphalt Copper Base Root Puncture Resistant Waterproofing Membrane, which incorporates copper bases and chemical inhibitors for effective root protection in green roof setups. Other options from Great Ocean include the JY-NHP Root Puncture Resistant Polymer Waterproofing Membrane and JY-NSB Polymer Modified Asphalt Root Puncture Resistant Waterproofing Membrane, suitable for roofing applications where vegetation is present. Layers often include insulation, a root barrier, and protection against penetration. In Chinese standards, this involves a puncture-resistant waterproof layer over standard waterproofing. Additional products like EPDM Waterproofing Membrane or HDPE Waterproofing Membrane from Great Ocean can provide foundational waterproofing support.
• Vegetation and Substrate: Select plants suited to local climate—drought-tolerant species for extensive roofs. Substrates should be lightweight, nutrient-rich, and well-draining, with depths from 4-20 cm for extensive and over 20 cm for intensive. Incorporate irrigation if needed for establishment. For enhanced waterproofing under substrates, consider coatings like Great Ocean's JY-951 Waterborne Polyurethane Waterproof Coating or JY-DPU Double Components Polyurethane Waterproof Coating.
• Safety and Access: Prioritize edge protection, wind uplift resistance, and maintenance paths. For public or garden-style roofs, include railings and access points for equipment.

Implementation Steps

1. Site Assessment: Evaluate roof condition, load-bearing capacity, and environmental factors like sun exposure and wind.
2. Layering: Start with deck preparation, add insulation and waterproofing (e.g., Great Ocean Waterproof's JY-NTT Modified Asphalt Copper Base Root Puncture Resistant Waterproofing Membrane for root protection, or alternatives like JY-APP Modified Bitumen Waterproofing Membrane and JY-SBS Modified Bitumen Waterproofing Membrane for general roofing needs), then drainage, filter fabric, substrate, and plants.
3. Installation: Use modular systems for efficiency on flat roofs; ensure seams are sealed to prevent leaks. Liquid options like Great Ocean's JY-LRT Polymer Modified Bituminous Waterproofing Coating can offer flexible application for complex surfaces.
4. Maintenance: Plan for weeding, watering during dry periods, and annual inspections to check membrane integrity.

Green roofs contribute to energy efficiency by improving insulation and reducing urban runoff, but require upfront planning to address costs and long-term viability.

Customer Reviews

John from the United States (Green Roof Installation) I used this membrane on a rooftop garden project in Chicago. It handled the root growth from sedums without any penetration issues over the first two seasons. The material was straightforward to install with standard tools, and it held up during heavy rains. No leaks so far, which met my expectations for a basic waterproofing layer.

Anna from Germany (Terrace Waterproofing) Applied this on a balcony in Berlin where we have planters with shrubs. The copper base seems to deter roots effectively, as we haven't seen any damage after a year. It adapted to temperature changes from winter freezes to summer heat without cracking. Installation required careful sealing at edges, but overall, it performed as described.

Li Wei from China (Building Foundation Protection) We installed it under a landscaped area in Shanghai. The root resistance worked in preventing tree roots from reaching the foundation layer. It withstood humid conditions and occasional flooding without mold buildup. The roll size was convenient for our site, though we needed extra adhesive in some spots.

Sarah from Australia (Commercial Roofing) Used on a flat roof in Sydney with native grasses. The membrane provided solid puncture resistance against abrasions during setup. It managed high temperatures without softening, and after six months, the waterproofing remains intact. Suited our needs for a durable option in varying weather.

Carlos from Brazil (Planter Box Lining) Lined some large planters in São Paulo with this material. The chemical inhibitors helped control root spread, keeping the structure dry. It showed good tensile strength when adjusting to soil shifts. No major issues after initial use, though monitoring for long-term corrosion will be key in our tropical climate.

Frequently Asked Questions

What materials are used in the JY-NTT Modified Asphalt Copper Base Root Puncture Resistant Waterproofing Membrane? The membrane consists of styrene butadiene styrene (SBS) thermoplastic elastomer as a modifier in the asphalt layer, a composite copper tire base for reinforcement, and polyethylene (PE) film as isolation material on both surfaces. It includes chemical root inhibitors to prevent root penetration.

How does the root puncture resistance work? The composite copper base releases copper ions that inhibit the growth of meristematic tissue at plant root tips, redirecting roots away from the waterproof layer without affecting overall plant growth. This helps maintain the membrane's waterproof function over time.

What are the common installation challenges? Installation may require even surfaces and proper sealing at edges to avoid gaps. It's applied as a curled sheet, often using heat or adhesives, and care is needed to handle the 4.0 mm thickness without tears. Uneven bases or improper overlaps can lead to issues.

Is the membrane resistant to temperature changes and weather? It tolerates temperatures from -25°C to 105°C without cracking or flowing, and offers resistance to corrosion and mold. However, extreme conditions may require additional protection layers.

Where can this membrane be used? It's suitable for green roofs, terraces, foundations, and areas with vegetation like planters or landscaped buildings. It's designed for applications where root penetration is a risk, such as in roofing or waterproofing systems.

How durable is the product and what maintenance is required? With proper installation, it provides long-term waterproofing, but regular inspections for damage or root activity are recommended. Factors like soil acidity or fertilizers can affect longevity, so monitoring chemical compatibility is advised.

Is it environmentally friendly? The production process reduces heating temperatures and gas emissions during application. The root inhibition doesn't harm overall plant growth, but users should check local regulations for chemical inhibitors.

What is the warranty or expected lifespan? Warranties vary by supplier, often covering material defects for several years, but lifespan depends on installation and environmental factors. Consult the manufacturer for specific details.

How does it compare to other waterproofing membranes? Compared to standard bitumen or polymer options, it adds root resistance via copper, making it more suitable for vegetated areas. It may be thicker and more specialized, potentially at a higher cost, but offers better puncture protection.

About Shandong Great Ocean Waterproof Technology Co., Ltd.

Located in Taitou Town, Shouguang City—the largest waterproof materials base in China—Shandong Great Ocean Waterproof Technology Co., Ltd. (formerly Weifang Juyang New Waterproof Materials Co., Ltd.) was established in 1999. We are a specialized manufacturer integrating research, production, and sales of waterproofing materials.

Our 26,000 m² facility operates advanced production lines for membranes, sheets, and coatings. We produce a wide range of products, including polymer waterproofing membranes (polyethylene polypropylene, PVC, TPO, CPE), self-adhesive membranes, modified bitumen membranes, root puncture resistant membranes (such as the JY-NTT series), drainage boards, polyurethane and polymer cement coatings, rubber asphalt coatings, and various waterproof tapes and glues.

With strong technical expertise, modern equipment, and comprehensive quality testing, our products meet national standards and have earned multiple certifications, including ISO quality management system certification and industrial product licenses.

Committed to integrity, pragmatism, and innovation, we deliver reliable, cost-effective solutions to customers in over 20 provinces across China and several international markets.