PROPERTIES Brushable elastomeric acrylic rubber-based waterproofer for roofs with long-term durability. It creates a white protective membrane, without seams nor joints, with excellent adhesion to the substrate. Due to its high modulus of elasticity, it can absorb intense expansions and contractions, without the need for additional reinforcement (mesh). It protects surfaces from moisture that can adversely affect concrete rebars. Certified by the University of Athens (Department of Physics, Division of Applied Physics), as ‘Cool’ material of low thermal conductivity and high reflectivity. Classified as product for surface protection of concrete surfaces per EN 1504-2. Why should I choose DS-220 to waterproof my roof? • Distinguished for its excellent resistance to extreme weather conditions, maintaining its properties at temperatures from -30°C up to +90°C. • It is resistant to corrosive atmospheric gases, such as carbon dioxide, sulfur oxides, chlorides, etc. • It contains advanced, new-technology UV filters, contributing to its long-lasting resistance against the destructive effects of solar radiation. • Once dry, the surface is walkable without sticking. • Presents excellent bridging of existing hairline and capillary cracks and prevents their reappearance. • Exceptional durability to standing water. • It improves the energy efficiency of the building by reducing the temperature absorption of the roof slab due to its reflective action (≥80%) resulting from its exceptional whiteness. • It reduces the indoor temperature in spaces under the roof during the summer and keeps them watertight during the winter months. As a result, it also contributes to the reduction of energy consumption for cooling and heating. • It minimizes the risk of moisture build-up on the substrate and mold growth in the interior, as it is water vapour permeable. • Ideal waterproofing solution for surfaces where photovoltaic modules have been, or will be, installed. • It maintains its whiteness and does not chalk. • It can be easily cleaned using only water. APPLICATIONS DUROSTICK DS-220 is easily applied on terraces and roofs to be covered with clay roof tiles, on roof corners and ridges, on lead-lined roof valleys, balconies and built-in planters. It is recommended for substrates made of concrete and terrazzo, as well as for wood surfaces. Additionally, it is suitable for existing asbestos-based mortars, cement boards and well-adhered asphalt roofing rolls. USE Preparation of cementitious, unprotected surface: Using a stiff broom and water, thoroughly clean all dust and mud. Remove all black spots (mold/mildew) using DUROSTICK D-95 CLEANER or a bleach/water solution, at a mixing ratio of 1:1. Follow by rinsing thoroughly with plenty of water. All surfaces to be sealed must be completely dry and protected from water for at least 24 hours prior to the application, thus preventing any penetration and trapping of moisture. V.O.C. (Volatile Organic Compounds): Limit value of maximum V.O.C. content according to EU (Directive 2004/42/CE) for the particular product (category A/c: ‘Coatings for exterior walls of mineral substrate’, Type WB): 40gr/lt (2010). The ready to use product contains maximum 17gr/lt V.O.C. TECHNICAL SPECIFICATIONS: • Form-Color: Viscous paste-White • Density: 1.40±0.05kg/lt • Elongation (per ASTM D 412): After 8 days of curing and at 1mm thick membrane, the elongation at break was determined at 400% Full watertightness: 7 Atm per DIN 1048 • Capillary absorption and permeability to water: 0.01kg/m2.h0,5 (EN 1062-3, requirement EN 1504-2: w <0.1) • Permeability sD to CO2 per EN 1062-6: sD > 50m • Permeability to water vapour sD per EN ISO 7783: sD = 1.17m (water vapour class I, sD <5m) Application: Before applying the waterproofing product on cementitious surfaces, first apply the micromolar stabilizer, AQUAFIX undiluted, or the SOLVENT BASED PRIMER, diluted 30% with THINNER 101 of DUROSTICK, by using a paint roller. Alternatively, if the roof does not have any deteriorated sections, dilute DS-220 with water at a 1:1 ratio and apply it as a primer with a paint roller. Once the primer is dry, inspect the surface for any possible hairline cracks (0.1- 0.4mm in width). Seal them completely by individually coating each crack with one-two coats of the undiluted product. If the width of the cracks is between 0.5-1mm, it is recommended to seal them using DUROSTICK’s ACRYLIC CAULK or the elastomeric sealant, DS POLYMER of DUROSTICK (cartridge), using a putty knife. Continue by applying two coats of the undiluted product over the cracks to complete their sealing. Complete the surface waterproofing by applying two undiluted coats of DUROSTICK’s DS-220 over the entire area. Apply the second coat crosswise after the first has dried and is walkable, ensuring all minor substrate imperfections are covered. USEFUL TIPS - NOTES • Mix well before use. • Avoid applying the waterproofer if there is a possibility of rain within the next 24 hours. REPORT OF REFLECTIVITY MEASUREMENT, EMISSIVITY COEFFICIENT & THERMAL CONSTANTS OF THE UNIVERSITY OF ATHENS, PHYSICS DEPARTMENT Specimen Reflectivity in solar radiation SR(%) Emissivity coefficient in the infrared radiation e (±0.02) Reflectance index to solar radiation SRI DUROSTICK DS-220 89 0.83 112 Specimen Thermal conductivity (W/mK) Thermal dissipation (mm2/s) Specific Thermal capacity (ΜJ/m3K) DUROSTICK DS-220 0.535 0.341 1.570 TOOLS FOR THE REMOVAL OF DETACHED ELASTOMERIC WATERPROOFING PRODUCTS Acrylic elastomeric waterproofer (liquid rubber) FOR ROOFS, BALCONIES, BUILT-IN PLANTERS www.durostick.com • Adhesion strength per EN 1542: 1.2 N/mm² (requirement for flexible systems with no traffic: 0.8 N/mm²) • Impact resistance per EN ISO 6272-1: 10Nm (class II) • Application temperature: From + 8°C to +30°C • Temperature resistance: From -30°C to +90°C. Preparation of surfaces coated with waterproofing product(s): Detached torch-down roofing: remove by using a wide roofing scraper and a roofing torch simultaneously. Well-adhered existing torch-down roofing material, require only a first coat of DS-220, diluted 5% with clean water and a second crosswise coat undiluted to complete the waterproofing of the roof. Worn-out or detached elastomeric sealants, remove by using a roofing scraper or other mechanical means.
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