K-flex K-ROCK ALU mineral wool insulation with aluminum cladding, tube 20 x 48 mm, 1 m

K-flex K-ROCK ALU mineral wool insulation with aluminum cladding, tube 20 x 48 mm, 1 m is a factory-formed pipe section designed to provide thermal and acoustic insulation for straight runs of pipework. The product consists of a fire-resistant mineral wool core that offers thermal resistance and sound damping, combined with an outer aluminum jacket that adds mechanical protection and improved moisture resistance. Supplied as a 1 m long, pre-formed tube with internal dimensions 20 x 48 mm, it fits pipes within the specified internal size and is suitable for building services and industrial piping systems.

Advantages

The mineral wool core delivers stable thermal performance across a wide temperature range and contributes to fire safety due to its non-combustible properties. The aluminum cladding provides a durable, corrosion-resistant outer surface that resists moisture and mechanical damage, simplifying on-site handling and installation. The pre-formed tubular design enables accurate fit on round and slightly oval pipes of corresponding internal size, reducing the need for field cutting and shaping while maintaining consistent insulation thickness.

Suitable for

• Thermal insulation of heating pipes in residential and commercial buildings
• Acoustic insulation to reduce pipe-borne noise in HVAC systems
• Insulation of ventilation and air conditioning ductwork and piping
• Industrial process pipes requiring fire-resistant insulation and surface protection

Key specifications

• Shape: pre-formed tube (split for installation)
• Internal dimensions: 20 x 48 mm (suitable for corresponding pipe profiles)
• Length: 1 m per section
• Core material: mineral wool (non-combustible)
• Outer jacket: aluminum cladding for mechanical and moisture protection
• Primary functions: thermal insulation and acoustic attenuation

How to use

Measure the outside dimensions of the pipe to ensure compatibility with the tube internal size. If required, cut the 1 m section to length using a fine-toothed saw or insulation knife, taking care to maintain a straight cut. Open the pre-formed tube along its split, place it around the pipe and align the joint. Secure the insulation using appropriate adhesive tape, clamps or stainless-steel bands as recommended for the installation environment. Where several sections are joined, ensure tight butt joints and seal seams with compatible aluminum tape or sealant to maintain thermal continuity and moisture resistance.

Usage recommendations

For best results use on pipes within the specified internal size and protect exposed seams in outdoor or humid locations with continuous aluminum tape or a weatherproof jacket. Avoid contact with sharp edges and ensure support spacing follows local installation standards to prevent sagging. For applications with specific fire, insulation thickness or vapour control requirements, consult project specifications or a technical representative.