ARMAFLEX INSULATION SHEET IN KENYA.

Armaflex insulation sheets are flexible, closed-cell elastomeric foam materials (primarily NBR/PVC-based) designed to provide high-performance thermal, acoustic, and moisture protection for HVAC, mechanical, and industrial applications.

Key Technical Specifications

• Thermal Conductivity: < 0.033- 0.038  W/m K at 25°C.

• Temperature Range: -50^°C to +105^°C (continuous surface limits apply based on adhesive used).

• Water Vapor Resistance: High moisture resistance > 10,000  perm-inch < 0.08 acting as an integral vapor barrier.

• Fire Safety: Class 0 fire rating, self-extinguishing with low flame spread (ASTM E84 / BS 476 Part 6 & 7).

Primary Benefits

• Condensation Control: The closed-cell structure prevents moisture accumulation and condensation buildup on cold lines, protecting equipment from Corrosion Under Insulation (CUI).

• High Energy Efficiency: Maintains continuous thermal resistance to prevent heat gain or heat loss in mechanical systems.

• Mold and Bacterial Resistance: Antimicrobial protection and non-porous structure prevent fungal and mold growth.

• Acoustic & Vibration Damping: Absorbs noise and reduces mechanical vibration in ductwork, walls, and piping systems.

• Ease of Installation: Dust-free, fiber-free, and flexible, allowing straightforward cutting and seamless fitting on complex shapes or flat surfaces.

  Typical Applications

  • HVAC Systems: Large-diameter air conditioning ductwork, air handlers, and duct lining.

  • Refrigeration & Chilled Water: Chilled water piping, cold room walls/ceilings, and commercial refrigeration units.

  • Plumbing & Solar Piping: Hot and cold water distribution lines to prevent heat loss or freezing.

  • Industrial & Acoustic Insulation: Tanks, vessels, machinery enclosures, and soundproofing partitions in commercial buildings. 

    Advantages of Armaflex sheet
    Major advantages
    Flexible
    Lightweight
    Easy to cut
    Easy to install
    Closed-cell structure
    Excellent moisture-vapour resistance
    Good thermal insulation
    Good condensation control
    Suitable for cold applications
    Suitable for many HVAC applications
    Does not produce irritating fibres like glass/mineral wool
    Can be installed around complicated shapes
    Available with self-adhesive backing
    Good acoustic properties
    Available in multiple thicknesses
    Suitable for pipes, ducts and vessels
    Antimicrobial options available

  Standard Formats & Sizes

  Armaflex sheets are supplied as flat cut-to-size panels or continuous flexible rolls, available in plain (standard), self-adhesive (sticky back), or foil-faced (FSK / aluminum) variants.   

  Thickness	Standard Formats (Width x Length)	Common Variants
  6 mm (¼”)	Continuous Rolls: $1.0\text{m}\times 30\text{m}$ or $1.2\text{m}\times 30\text{m}$	Plain, Self-Adhesive
  9 mm / 10 mm (⅜”)	Continuous Rolls: $1.0\text{m}\times 20\text{m}$ or $1.2\text{m}\times 20\text{m}$	Plain, Self-Adhesive, Foil-Faced
  12.5 mm / 13 mm (½”)	Continuous Rolls: $1.0\text{m}\times 14\text{m}$ or $1.2\text{m}\times 14\text{m}$	Plain, Self-Adhesive, Foil-Faced
  19 mm (¾”)	Continuous Rolls: $1.0\text{m}\times 10\text{m}$ or $1.2\text{m}\times 10\text{m}$	Plain, Self-Adhesive, Foil-Faced
  25 mm (1″)	Continuous Rolls: $1.0\text{m}\times 8\text{m}$ or $1.2\text{m}\times 8\text{m}$	Plain, Self-Adhesive, Foil-Faced
  32 mm / 38 mm (1½”)	Flat Sheets / Rolls: $1.0\text{m}\times 6\text{m}$ or $2.0\text{m}\times 0.5\text{m}$ panels	Plain, Heavy-Duty Thermal
  50 mm (2″)	Pre-cut Flat Panels: $2.0\text{m}\times 0.5\text{m}$ or $1.22\text{m}\times 0.915\text{m}$ sheets	High-Thickness Acoustic & Thermal

  Export to Sheets

  Frequently Asked Questions (FAQs) – Armaflex Insulation Sheets

  1. What is Armaflex insulation made of?

  Armaflex is a flexible, closed-cell elastomeric foam insulation material, typically made from Nitrile Butadiene Rubber (NBR) and Polyvinyl Chloride (PVC) blends.

  2. Why is closed-cell insulation better for HVAC and refrigeration systems?

  The closed-cell structure creates a built-in vapor barrier that prevents moisture penetration. This stops condensation from forming on cold pipes or ductwork, reducing the risk of Corrosion Under Insulation (CUI) and mold growth.

  3. What temperature range can Armaflex sheets handle?

  Armaflex sheets operate within a temperature range of -50°C to +105°C (continuous surface temperatures depending on the specific adhesive used during installation).

  4. Are Armaflex sheets fire-resistant?

  Yes, Armaflex sheets typically carry a Class 0 fire rating (ASTM E84 / BS 476 Part 6 & 7), making them self-extinguishing with low flame spread and smoke development.

  5. How do I install Armaflex sheets on large ductwork or equipment?

  Armaflex can be cut easily using a utility knife. It is installed using specialized elastomeric contact adhesives (or using pre-applied self-adhesive backings) to ensure a sealed, continuous vapor barrier at all seams and joints.

  6. Can Armaflex sheets be used outdoors?

  Yes, but outdoor installations require protection against direct ultraviolet (UV) radiation. They should be finished with a protective UV-resistant paint, cladding, or aluminum foil jacket (FSK facing) to prevent breakdown over time.

  7. Does Armaflex help with soundproofing?

  Yes. In addition to thermal insulation, its flexible elastomeric structure effectively absorbs acoustic airborne sound and dampens vibration in ducting, plant rooms, and enclosures.

  Why Purchase from Isothermal Mechanical Engineering Limited?
  

  Here are the key reasons customers choose Isothermal Mechanical Engineering Limited for their Armaflex sheets and mechanical insulation needs:

  • Certified High-Quality Products: You supply genuine, high-density closed-cell elastomeric Armaflex insulation that fully complies with international fire (Class 0), safety, and thermal standards.
  • Extensive Local Stock & Range: Customers get immediate access to a complete range of sheet thicknesses (6mm to 50mm), standard cut panels, continuous rolls, and specialized variants (plain, self-adhesive, and aluminum-faced/FSK).
  • Technical Expertise & Solutions: Beyond just selling products, your team of mechanical engineers offers expert technical guidance on product selection, thermal calculations, and proper installation practices to prevent condensation and energy loss.
  • Competitive Local Pricing: Based directly in Kenya, you provide cost-effective sourcing without long import lead times or middleman markups.
  • Reliable Customer & After-Sales Support: Customers receive direct, prompt communication and fast dispatch, backed by dedicated local support via phone or direct instant messaging.