Mineral Wool Insulation Mat SpiroFlex MI50 — self-adhesive, 50 mm thickness, 5 m²

SpiroFlex MI50 is a self-adhesive mineral wool insulation mat with 50 mm thickness and a total area of 5 m², intended for thermal and acoustic insulation of ventilation ducts, air handling units and building partitions. The product has a non-combustible mineral wool core that provides fire resistance and sound absorption, combined with a factory-applied adhesive layer for direct bonding to metal and other rigid surfaces. The mat is flexible enough to conform to curved ducts while maintaining thermal performance and surface stability.

Advantages

The self-adhesive backing simplifies installation and reduces the need for mechanical fasteners or additional adhesives. The 50 mm thickness balances thermal resistance and sound attenuation for HVAC and partition applications. The mineral wool core is non-combustible and contributes to fire safety in installations. Factory-applied adhesive ensures consistent adhesion and cleaner handling on site.

Suitable for

• Thermal insulation of ventilation ducts and air handling units
• Acoustic lining of ductwork to reduce noise transmission
• Insulation of metal or rigid building partitions
• Retrofit and renovation projects where direct bonding is required

Key specifications

• Material: mineral wool core with factory-applied adhesive facing
• Thickness: 50 mm
• Coverage area per mat: 5 m²
• Fire performance: non-combustible mineral wool
• Application surfaces: metal and other rigid substrates suitable for adhesive bonding

How to use

Ensure substrate surfaces are clean, dry and free from oil, dust or loose particles before application. Measure and cut the mat to the required dimensions using a sharp knife or insulation cutter. Remove the protective liner from the adhesive backing and press the mat firmly onto the substrate, smoothing out any air pockets and ensuring full contact along the edges. For curved ducts, apply the mat with overlapping edges as required and press firmly to achieve continuous coverage. Allow a brief adhesion set time before subjecting the installation to mechanical stress.

Usage recommendations

Store mats flat in a dry environment prior to installation. Use personal protective equipment when cutting or handling mineral wool to avoid skin or respiratory irritation. Where additional mechanical fixation is required by regulations or site conditions, supplement the adhesive with appropriate fasteners. Follow local fire safety and building regulations when specifying insulation for ventilation and partition systems.