Optolith Optotherm Styro KM 25 kg –

Adhesive for Polystyrene in Thermal Insulation Systems

Optolith Optotherm Styro KM is a dry adhesive mortar designed for durable and reliable bonding of EPS polystyrene boards in ETICS insulation systems. The product offers excellent adhesion to common mineral substrates such as concrete, cement or cement-lime plasters, and brick masonry. It is easy to prepare and apply, enabling fast and efficient insulation work.

Applications:

• Bonding EPS boards to mineral substrates on building façades

• For use in ETICS (light-wet) insulation systems

Key Advantages:

• High bonding strength – ensures durable and secure attachment of polystyrene

• Vapor-permeable – allows moisture to escape from the wall structure

• Weather-resistant – ideal for exterior use

• Easy to work with and adheres well to standard construction substrates

• Economical consumption and convenient packaging

Technical Data:

• Consumption: approx. 4–5 kg/m² depending on substrate type and flatness

• Pot life after mixing: up to 2 hours

• Application temperature: from +5°C to +30°C

• Color: grey

• Packaging: 25 kg paper bag

Instructions for Use:

Mix the contents of the bag with the appropriate amount of clean, cold water (according to the manufacturer’s instructions) until a uniform mass is obtained. Before starting the bonding process, ensure that the substrate is stable, clean, dry, and free from substances that reduce adhesion. The adhesive should be applied using the ribbon-dot or perimeter-dot method, depending on the project requirements.

Technical Data Sheet