Technical Leaflet Directions for use FLEX PU-50 S is a one-component, polyurethane adhesive sealing mastic with solvents, providing: • Resistance to temperatures ranging from -40oC to +90oC. • Excellent bonding to any kind of building material. • High elasticity. • Great endurance to aging (UV radiation and weather). • Dyeability after hardening, only with water-soluble paints. FLEX PU-50 S is suitable for sealing vertical and horizontal joints 5-30mm thick, on various materials like concrete, aluminium, steel, wood, glass, natural and artificial stones, etc., both indoors and outdoors. Also suitable for bonding these materials. In case of grouting on natural or artificial stones, such as marble and granite, please contact ISOMAT’s Technical Support Department. 1. Substrate preparation The substrate must be dry and free of dust, loose particles, grease etc. The joint should be cleaned with a paintbrush or wire brush and then air-blasted. To avoid undesirable soiling at joint edges, a self-adhesive paper-tape is applied along the edges and then removed immediately after sealing the joint (before a film is formed). 2. Application The cartridge is inserted in the special gun and the nozzle is cut slantwise, so that it does not fit into the joint but barely touches and slides along the edges. FLEX PU-50 S is applied by moving the cartridge along the joint axis at a 450 angle. While still fresh, the mastic is leveled with a trowel. Cleaning of tools: Tools must be thoroughly cleaned with common solvents, while material is still fresh. If material has hardened, tools may only be mechanically cleaned. Base: Colors: Application temperature: Film formation: Curing speed: Elastic recovery: Hardness according to SHORE A: Tensile strength (ISO 53504): Modulus at 100% elongation (ISO 53504): Elongation at break: (ISO 53504) • Joint 10mm x 10mm: 1 cartridge / 3 m of joint length. • Joint 5mm x 5mm: 1 cartridge / 12 m of joint length. Packaging • Cartridges of 300 ml. • Sausages of 600 ml.

Shelf-life - Storage Shelf-life is 9 months, in dry and frost-free conditions. ISOMAT S.A. BUILDING CHEMICALS AND MORTARS MAIN OFFICES - FACTORY: 17th km Thessaloniki - Ag. Athanasios Road, P.O. BOX 1043, 570 03 Ag. Athanasios, Greece, Tel.: +30 2310 576 000, Fax: +30 2310 722 475 www.isomat.eu e-mail: [email protected] The technical information and instructions supplied in this datasheet are based on the knowledge and experience of the department of Research and Development of our company and on results from long-term applications of the product in practice. The recommendations and suggestions...