K-flex insulation K-FLEX® K-ROCK ALU mineral wool jacket 40 x 48 mm 1 m bar

K-FLEX® K-ROCK ALU mineral wool jacket 40 x 48 mm 1 m bar is a factory-formed pipe insulation element with an aluminum outer cladding and a compact mineral wool core. Designed for thermal and acoustic insulation of piping and equipment in HVAC, industrial and commercial systems, the product combines a non-combustible insulation material with mechanical protection and moisture resistance provided by the aluminium facing. The 1 m bar format simplifies installation on straight runs and allows cutting to length on site.

Advantages

The mineral wool core provides stable thermal performance and inherent fire resistance, helping to limit heat transfer and contributing to fire safety. The aluminium cladding offers mechanical protection and a vapour-resistant surface that reduces the risk of moisture penetration and corrosion of the underlying pipe. Factory-formed geometry ensures consistent thickness and close fit around pipes, reducing the need for complex on-site shaping and improving overall installation speed and quality.

Suitable for

• Thermal and acoustic insulation of HVAC pipework in commercial buildings
• Insulation of industrial process pipes and equipment where fire resistance is required
• Renovation and retrofit projects requiring durable, moisture-resistant pipe jacketing
• Applications where easy handling and cutting-to-length on site are needed

Key specifications

• Material: mineral wool core with aluminium outer cladding
• Shape and format: factory-formed pipe jacket in 1 m bar sections
• Nominal cross-section: 40 x 48 mm
• Primary functions: thermal insulation, acoustic attenuation and fire resistance
• Surface: aluminium faced for mechanical protection and vapour resistance

How to use

Select the appropriate jacket size for the pipe diameter and check that the nominal 40 x 48 mm profile matches the installation requirement. Cut the 1 m bar to the required lengths with a fine-toothed saw or insulation knife, ensuring a straight, clean edge. Fit the jacket around the pipe so the mineral wool core conforms closely to the pipe surface and the aluminium cladding faces outward. Seal longitudinal joints and end joins with appropriate aluminium foil tape or approved sealants to maintain vapour resistance and mechanical protection. Ensure appropriate support and fixings are used according to project specifications.

Usage recommendations

Store bars flat in a dry, covered area prior to installation. Avoid prolonged exposure of cut edges to wet conditions. Where additional mechanical protection or aesthetic finish is required, consider complementary cladding or protective covers compatible with aluminium-faced mineral wool jackets.