Technical Datasheet Technical data One-component, thixotropic, polyurethane, liquid waterproofing membrane for vertical, curved and sloping surfaces. ISOFLEX-PU 500 THIXO is based on elastomeric, hydrophobic polyurethane resins of excellent mechanical, chemical, thermal and weather resistance. Thanks to its thixotropy, it is easily applied to vertical, curved and sloping surfaces. The product has additionally the following properties: • Forms a continuous, elastic, waterproof, vapor-permeable layer, without seams or joints. • Features excellent adhesion to various substrates, like concrete, cement mortars, metal, wood and most waterproofing membranes. • Applicable even to irregular substrates. ISOFLEX-PU 500 THIXO is suitable for waterproofing: • Sloping roofs, flat roofs and balconies, as exposed waterproofing membrane. • Gypsum and cement boards. • Under tile layers in bathrooms, kitchens, balconies and flat roofs, as long as quartz sand is broadcast on its last layer. • Under thermal insulation boards on flat roofs. • In construction works, such as highways, bridge decks, tunnels etc. • Foundations. • Old layers of bituminous or EPDM membranes. • Polyurethane foam. • Metal surfaces. prepolymer Color: white, grey 2. Properties of the cured membrane Elongation at break: > 350 % (EN-ISO 527) Hardness according to SHORE A: 78 ± 2 (EN 1062-3, requirement of EN 1504-2: w < 0.1) Water vapor permeability: Sd = 0.82 m (EN 1542, requirement for flexible systems with no traffic 0.8 N/mm2) Artificial weathering: Pass (no blistering, Reaction to fire: Euroclass F

1. Substrate preparation In general, the substrate must be dry (moisture content < 4%) and free of grease, loose particles, dust, etc. 1.1 Concrete surfaces Any existing cavities in concrete should be repaired in advance. Severe cracks on the substrate must be primed locally and after 2-3 hours (depending the weather conditions) must be sealed with the polyurethane sealants FLEX PU-30 S or FLEX PU-50 S. Concrete and other porous surfaces with moisture content < 4%, should be treated with the primer PRIMER-PU 100, at a consumption of approx. 200 g/m2. Surfaces with moisture content > 4% should be...

b) Local waterproofing of cracks In this case, the primer is applied on the substrate only along the cracks, to a width of 10-12 cm. Two-three hours after priming, the first ISOFLEX-PU 500 THIXO layer is applied and, while still fresh, a 10 cm wide polyester fleece strip (60 g/m2) is embedded lengthwise. Two extra ISOFLEX-PU 500 THIXO layers are applied along the cracks, completely covering the reinforcement. Consumption: approximately 200-250 g/m of crack length. c) Waterproofing under tiles ISOFLEX-PU 500 THIXO is applied by brush or roller in 2 layers. ISOFLEX-PU 500 THIXO should be locally reinforced...

C€ _2032_ ISOMAT S.A. 17th km Thessaloniki - Ag. Athanasios P.O. BOX 1043, 570 03 Ag Athanasios, Greece 18 2032-CPR-10.11E DoP No.: ISOFLEX-PU 500 THIXO / 1866-01 EN 1504-2 Surface protection products Coating Permeability to CO2: Sd > 50m Water vapor permeability: Class I (permeable) Capillary absorption: w < 0.1 kg/m2-h°-5 Adhesion: > 0.8 N/mm2 Reaction to fire: Euroclass F Dangerous substances comply with 5.3 ISOMAT S.A. BUILDING CHEMICALS AND MORTARS Thessaloniki: 17th km Thessaloniki - Ag. Athanasios P.O. BOX 1043, 570 03 Ag. Athanasios Tel.: 2310 576 000 Fax: 2310 722 475 Athens: 57th km...