Elastic, 1-part-polyurethane, liquid waterproofing membrane

Transcription

1 Product Data Sheet Edition Revision no.: 1 Identification no: Sikalastic -450 Elastic, 1-part-polyurethane, liquid waterproofing membrane Construction Product Description Sikalastic -450 is a one part, easy to apply, specially formulated polyurethane based, elastic, crack bridging membrane. It cures to form a highly elastic, seamless, waterproof coating with excellent crack bridging properties. Its performance is maintained even at low temperatures. Uses Seamless coating on roofs and concrete structures, which can also be used as a waterproofing membrane on non trafficked areas. Not suitable for permanent water immersion Characteristics / Advantages Tests Can be applied on concrete, brickwork, asbestos cement, roof tiles, roofing felt etc. For areas with specific official performance requirements, please contact your local Sika Company for advice on product selection Crack-bridging Highly elastic Excellent adhesion Easy application Economic Silk / matt appearance Root penetration resistant Approvals / Standards Tested for root penetration resistance in accordance with DIN 4062 part 4.7. Conforms to the requirements of ETAG Certificate: European Technical Approval No. ETA-05/0263. Product Data Form Appearance / Colour Packaging Storage Storage Conditions / Shelf Life Liquid, white or terracotta 7 kg, 21 kg containers. 9 months from date of production if stored properly in original, unopened and undamaged sealed packaging in dry conditions at temperatures between +5 C and +30 C. 1 1/5

2 Technical Data Chemical Base Polyurethane Density ~ 1.4 kg/litre (DIN EN ISO ) All Density values at +23 C Solid Content Mechanical / Physical Properties ~ 85% by weight (+23 C / 50% r.h.) ~ 76% by volume (+23 C / 50% r.h.) Tensile Strength 6 N/mm 2 (28 days / +23 C) (DIN 53504) Elongation at Break 450% (28 days / +23 C) (DIN 53504) System Information System Structure Economy System: Layer thickness: ~ 0.5 mm Coating: 2 x Sikalastic -450 High Standard System: Layer thickness: ~ 0.7 mm Coating: 2 x Sikalastic -450 UV-protection: 1 x Sikalastic -445 Roofing-system, without UV-protection (according to ETAG 005): Layer thickness: mm Coating: 6 x Sikalastic -450 Roofing-system, with UV-protection (according to ETAG 005): Layer thickness: mm Coating: 6 x Sikalastic -450 UV-protection: 1 x Sikalastic -445 Application Details Consumption / Dosage Coating System Product Consumption Economy System 1 x Sikalastic x Sikalastic -450 High Standard System 1 x Sikalastic wt.-%thinner C 0.45 kg/m²/ layer Roofing-system, without UV-protection (according to ETAG 005) Roofing-system, with UV-protection (according to ETAG 005) 2 x Sikalastic x Sikalastic x Sikalastic x Sikalastic x Sikalastic x Sikalastic x Sikalastic kg/m²/ layer kg/m² 0.45kg/m²/ layer kg/m² 0.45 kg/m²/ layer kg/m² These figures are theoretical and do not allow for any additional material due to surface porosity, surface profile, variations in level and wastage etc. 2 2/5

3 Substrate Quality Substrate Preparation The substrate must be clean, dry and free of all contamination such as dirt, oil, grease, coatings etc. which hinder an adhesion. The substrate must be sound and of sufficient strength. If in doubt, apply a test area first. Weak concrete must be removed and surface defects such as blowholes and voids must be fully exposed. All dust, loose and friable material must be completely removed from all surfaces before application of the product, preferably by brush and/or vacuum. Application Conditions / Limitations Substrate Temperature Ambient Temperature Substrate Moisture Content Relative Air Humidity Dew Point +10 C min. / +40 C max. +10 C min. / +40 C max. < 4% pbw moisture content. Test method: Sika -Tramex meter, CM - measurement or Oven-dry-method. No rising moisture according to ASTM (Polyethylene-sheet). 80% r. h. max. Beware of condensation! The substrate and uncured membrane must be at least 3 C above the dew point to reduce the risk of condensation or blooming on the membrane finish. Application Instructions Mixing Mixing Tools Application Method / Tools Cleaning of Tools Potlife Waiting Time / Overcoating Prior to application, stir Sikalastic -450 thoroughly for 3 minutes in order to achieve a homogeneous mix. Over mixing must be avoided to minimise air entrainment. Only for priming a maximum of 15 may be added. Sikalastic -450 must be thoroughly mixed using a low speed electric stirrer ( rpm) or other suitable equipment. By brush: With a thick haired brush. By roller: With a solvent resistant, non-fuzzy roller. By spray: Airless spray equipment, for example: piston pump Wagner EP (pressure: ~ bar, nozzle: 0.38mm mm, angle: ca ). On vertical / inclined areas > 4% slope, use % Extender T for higher sag resistance. Clean all tools and application equipment with Thinner C immediately after use. Hardened and/or cured material can only be removed mechanically. Sikalastic-450 is designed for fast drying. Therefore the material will cure particularly quickly in high temperatures combined with high air humidity. Skin formation starts after approx. 1 hour (+20 C / 50% r.h.). Before applying Sikalastic -450 or Sikalastic -445 on Sikalastic -450 allow: Substrate temperature Minimum Maximum +10 C +20 C +30 C 36 hours 24 hours 16 hour 1) Assuming that all dirt has been removed and contamination is avoided. After thorough cleaning 1) Sikalastic -450 can be overworked with itself and Sikalastic -445 at any time 3 3/5

4 Notes on Application / Limitations For optimum application, do not allow liquid Sikalastic -450 to be heated by direct sunlight or other heat sources. Not suitable for permanent water immersion. During the curing process micro bubbles are formed. This is a product characteristic, which does not affect the protective properties. For this reason it should be ensured that the material is not applied at excessive film thicknesses in one layer. Excessive film thickness may create bubbles. The product can be applied by brush, roller or airless spray. Work well with a brush in difficult areas. Apply subsequent layers after the first layer has cured tack free. After Sikalastic -450 has been exposed to UV light, it will start to yellow slightly without loosing its physical properties though. We recommend to use Sikalastic -445 as a coloured, UV resistant topcoat for improved aesthetical requirements. Layer thickness of system: approx. 0.6 mm. If necessary, additional coats can be applied. For a layer thickness of mm minimum 6-7 coats are required. The product can be overcoated with itself. In order to cover joints, connections or overlaps of bituminous sheets, use strips of e.g. Sikalastic -120 Fleece to provide additional thickness. Please ask our technical service department for detailed recommendations. The elastic properties are maintained at temperatures down to -20 C and up to +80 C. Curing Details Applied Product ready for use Temperature Rain resistant after Ready for foot traffic 1 ) (with care) Full cure 1) +10 C ~ 16 hours ~ 36 hours ~ 8 days +20 C ~ 5 hours ~ 24 hours ~ 7 days +30 C ~ 4 hours ~ 16 hours ~ 6 days 1) Only for inspection or for application of the next layer, not for permanent traffic. Note: Times are approximate and will be affected by changing ambient conditions. Value Base Local Restrictions Health and Safety Information Legal Notes All technical data stated in this Product Data Sheet are based on laboratory tests. Actual measured data may vary due to circumstances beyond our control. Please note that as a result of specific local regulations the performance of this product may vary from country to country. Please consult the local Product Data Sheet for the exact description of the application fields. For information and advice on the safe handling, storage and disposal of chemical products, users shall refer to the most recent Material Safety Data Sheet containing physical, ecological, toxicological and other safety-related data. The information, and, in particular, the recommendations relating to the application and end-use of Sika products, are given in good faith based on Sika's current knowledge and experience of the products when properly stored, handled and applied under normal conditions in accordance with Sika s recommendations. In practice, the differences in materials, substrates and actual site conditions are such that no warranty in respect of merchantability or of fitness for a particular purpose, nor any liability arising out of any legal relationship whatsoever, can be inferred either from this information, or from any written recommendations, or from any other advice offered. The user of the product must test the product s suitability for the intended application and purpose. Sika reserves the right to change the properties of its products. The proprietary rights of third parties must be observed. All orders are accepted subject to our current terms of sale and delivery. Users must always refer to the most recent issue of the local Product Data Sheet for the product concerned, copies of which will be supplied on request. 4 4/5

5 CE Labelling Sika Deutschland GmbH Kornwestheimerstraβe D Stuttgart Last two digits of the year in which the marking was affixed 06 Construction European Technical approval No. Guideline for European Technical approval Minimum layer thickness ETA-05/0265 ETAG mm Water vapour diffusion resistance factor μ 1460 Resistance to wind loads 50 kpa Resistance to spreading fire and radiant heat No performance determined 1 Reaction to fire EN Statement on dangerous substances Resistance to slipperiness Class E Does not contain any Level of use categories according to ETAG 005 with relation to: Working life: Climatic zones: Imposed loads: Roof slope: Lowest surface temperature Highest surface temperture No performance determinded W2 M P1 to P3 S1 to S4 TL3 TH3 1 Classification of the external fire performance cannot be given as a valid EN does not exist. However, the existing verifications would lead to the classification B ROOF (t1) as indicated under pren and Commission Decision 2001/671/EC. EU Regulation 2004/42 VOC - Decopaint Directive According to the EU-Directive 2004/42, the maximum allowed content of VOC (Product category IIA / i type sb) is 600 / 500 g/l (Limits 2007 / 2010) for the ready to use product. The maximum content of Sikalastic -450 is < 500 g/l VOC for the ready to use product. Sika Yapı Kimyasalları A.Ş. Deri Org. San. Böl. 2. Yol J 7 Parsel, Aydınlı, Orhanlı Mevkii, Tuzla, İstanbul, Türkiye Çağrı Merkezi Telefon Faks bilgi@tr.sika.com /5