Thermal insulation K-flex K-ROCK ALU mineral wool jacketed pipe section 20 x 42 mm, 1 m

K-flex K-ROCK ALU mineral wool jacketed pipe section 20 x 42 mm, 1 m is a pre-formed thermal insulation element for straight pipe runs. It combines a stone wool core with an external aluminum jacket to provide thermal insulation, mechanical protection and enhanced fire resistance. The product is supplied in 1 m lengths with an internal diameter suitable for pipes matching the 20 x 42 mm dimensional profile and is intended for HVAC, plumbing and industrial piping applications where durability and thermal performance are required.

Advantages

The mineral wool core offers stable thermal conductivity and inherent non-combustible properties, while the aluminum outer jacket protects against mechanical damage, moisture ingress and improves surface emissivity. The pre-formed section simplifies installation on straight pipe runs, reduces on-site cutting and fitting time, and ensures consistent thickness and coverage. Compatibility with standard pipe dimensions and resistance to deformation make the product a reliable choice for installations that require long-term thermal efficiency and fire performance.

Suitable for

• Thermal insulation of hot and cold water piping in residential and commercial buildings
• HVAC distribution ducts and pipework requiring non-combustible insulation
• Industrial process lines where mechanical protection and thermal stability are needed
• Renovation projects where pre-formed sections speed up installation

Key specifications

• Core material: mineral (stone) wool providing thermal insulation and fire resistance
• Outer jacket: aluminum foil jacket for mechanical protection and reduced heat loss
• Dimensions: 20 x 42 mm cross-section, 1 m length
• Form: pre-formed, split longitudinally for fitting onto straight pipe sections
• Application temperature range: suitable for typical HVAC and plumbing service temperatures (refer to project-specific requirements)

How to use

Measure the pipe outer diameter and confirm compatibility with the 20 x 42 mm section before installation. Place the pre-formed K-flex K-ROCK ALU section over the straight pipe run, ensuring the split aligns with the pipe seam. For continuous coverage, butt adjoining sections together along the pipe axis and seal joints in the aluminum jacket using suitable tape or self-adhesive closures specified for jacketed mineral wool. Avoid compressing the mineral wool core during fitting to maintain thermal performance. Follow local building codes and project specifications regarding joint treatment, vapor barriers and mechanical fixings.

Usage recommendations

Store sections flat and dry prior to installation to prevent damage to the aluminum jacket. Use corrosion-resistant tape or silicone-based sealants compatible with aluminum for sealing seams. For applications with elevated moisture exposure or where additional mechanical protection is required, consider supplementary cladding or protective coverings and always follow applicable safety and fire codes.