K-Flex K-Rock ALU Mineral Wool Pipe Insulation 50mm Wall
18mm
£13.23
Sale price
£13.23
Regular price
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K-Flex K-Rock ALU Mineral Wool Pipe Insulation 50mm Wall
- UK stock – fast dispatch
- UK Mainland Delivery £7.50
- Expert technical support
- Trade accounts available
£13.23
Sale price
£13.23
Regular price
Shipping calculated at checkout.
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K-Flex K-Rock ALU Mineral Wool Pipe Insulation — 50mm Wall
K-FLEX K-Rock ALU is a pre-formed mineral wool (rock wool) pipe section with an aluminium foil facing, manufactured to the highest European standards. Engineered for high-temperature HVAC, industrial, and building services pipework where elastomeric insulation is unsuitable, K-Rock ALU delivers outstanding thermal performance, fire resistance, and mechanical durability in demanding environments.
The 50mm wall thickness is the heaviest standard specification in the K-Rock ALU range, designed for the most demanding high-temperature industrial applications — steam mains, district heating distribution, and large-bore process pipework where maximum thermal resistance is critical. Available in bore sizes from 18mm to 273mm.
The factory-applied aluminium foil laminate provides a clean, professional finish and acts as a vapour barrier, making K-Rock ALU the preferred specification for plant rooms, district heating, steam lines, and high-temperature process pipework. Seal all joints and longitudinal seams with aluminium foil tape for a complete vapour-tight installation.
Key Features
- Rock mineral wool construction — excellent high-temperature performance
- Aluminium foil (ALU) facing — vapour barrier, professional finish, and UV resistance
- Outstanding fire resistance — Euroclass A1 non-combustible
- Excellent acoustic and thermal insulation properties
- Rigid pre-formed sections for fast, accurate installation
- 50mm wall — 18mm to 273mm bore sizes available
- Supplied per 1 metre section
- CE certified — compliant with EN 14303
Typical Applications
- High-temperature steam mains and district heating distribution
- Large-bore industrial process pipework
- Plant rooms requiring maximum thermal and fire performance
- Industrial installations requiring fire-rated insulation
- Building services where non-combustible insulation is specified
Technical Specifications
| Material | Rock mineral wool |
| Facing | Aluminium foil laminate (ALU) |
| Wall thickness | 50mm |
| Bore sizes available | 18mm to 273mm |
| Temperature range | -200°C to +650°C |
| Thermal conductivity (λ) | 0.033 W/(m·K) at 10°C |
| Reaction to fire | Euroclass A1 — non-combustible (EN 13501-1) |
| Water vapour diffusion resistance (μ) | ≥ 7,000 (ALU facing) |
| Standard | EN 14303 |
| Section length | 1 metre |
| Colour | Silver (ALU faced) |
| Brand | K-FLEX |
Other wall thicknesses: 20mm | 25mm | 30mm | 40mm
⚠️ Additional wall thicknesses available on request: 60mm, 70mm, 80mm, 90mm, 100mm and 120mm. Please contact us at sales@ryanairconspares.com for pricing and availability.