Greenthermal: Premium Thermal Insulation for HVAC Ductwork

Closed Cell Polyethylene Foam Insulation For HVAC

Cost-Effective & Internationally Certified Foam Insulation

The New Standard in Polyethylene Insulation

CTF Greenthermal stands as one of the most advanced polyethylene foam thermal insulation materials for global HVAC and construction sectors.
Born from long-term R&D and continuous technical innovation, Greenthermal adopts proprietary closed-cell polyethylene foam production technology. Strictly manufactured under top-tier quality criteria, it gains wide industry recognition for outstanding thermal efficiency, mechanical strength and long-term durability.
Fully compliant with a full suite of international standards, Greenthermal has become a reliable preferred solution for engineering professionals worldwide, delivering consistent, stable performance under diverse working conditions.

Superior Fire & Smoke Performance

Third-Party Verified Certifications

Beyond outstanding base material properties, Greenthermal holds authoritative third-party accreditations covering GB, AS, UL and more, achieving premium fire classification grades for HVAC duct and pipe insulation.

Global Fire & Smoke Standard Compliance

Greenthermal conforms to mainstream international fire safety specifications for duct & pipe insulation:
  • BS 476 Class 0 (British Standard)
  • UL 94 HF-1
  • EN 13501-1 (EUROCLASS)
  • GB8624, GB8410
  • AS 1530.3 (Australian Standard)
  • ISO 9001 / ISO 14001
  • ASTM E84

Environmental Benefits

Sustainability, energy conservation, indoor air quality and occupational safety are core principles of modern green building. Greenthermal insulation is engineered to match these sustainable development goals:
  • Green Star Compliant (Low VOC)
  • RoHS Directive Compliant
  • Excellent mould resistance
  • REACH Directive Compliant

Market Leading Performance

Our proprietary physical crosslinking technology creates finer, evenly distributed cellular structures. Cell structure directly impacts thermal conductivity and vapour permeability — the two core indicators that decide insulation efficiency.
CTF-Greenthermal maintains stable thermal performance for decades-long service life.

Thermal Conductivity

Boasting thermal conductivity of 0.032 W/mK (at average temperature 23°C), CTF-Greenthermal ranks among the highest-performance flexible insulation materials available.
At identical thickness, it delivers up to 20% superior insulation effect compared with conventional elastomeric foam and chemically crosslinked foam materials.

Vapour Permeability

CTF-Greenthermal features nearly zero vapour permeability. This property stabilises its thermal conductivity for up to 10 years, greatly supporting sustainable building design and lowering long-term energy consumption.

Built for Durability

Multiple premium aluminium foil facings are available for CTF-Greenthermal, manufactured with top-quality raw materials to guarantee long-term reliable performance.
  • Pure Aluminium Foil
    It serves as a reliable moisture barrier, stopping moisture intrusion to keep steady thermal performance. High surface reflectivity reduces thermal radiation and optimises energy efficiency.
  • Metalized Aluminium Foil
    Lightweight with outstanding radiation reflection capability to limit heat transfer. Tear-resistant and robust, enabling convenient cutting and installation work.
  • Fiberglass-Reinforced Aluminium Foil
    Fiberglass reinforcement greatly enhances tensile strength and structural stability. It withstands physical impact and retains form under diverse environments, fully protecting the insulation core and extending service life.
    thermal conductivity remains relatively consistent for 10 years. This characteristic significantly contributes to building sustainability and cuts down on energy costs.

Technical Specification