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<h1>datenblaetter-func-53179-trans-en.pdf</h1> <p>SCHOMBURG GmbH & Co. KG <br />Aquafinstrasse 2–8 <br />D-32760 Detmold - Germany <br />phone + 49-5231- 953-00 <br />fax <br />+ 49-5231- 953-108 <br />mail export@schomburg.de <br />www.schomburg.de/en</p> <p>LIGHTFLEX </p> <p>Technical Data Sheet</p> <p>Art.-No. 2 01005 <br />Universal flexible adhesive – especially light with high yield <br /> </p> <p>SCHOMBURG GmbH & Co. KG <br />Aquafinstraße 2 – 8 <br />D-32760 Detmold <br />04 <br />2 01005</p> <p>C2 <br />Reaction to fire: <br />Bond strength, as <br />Tensile adhesion after dry ageing: </p> <p>ry</p> <p>ve</p> <p>Cement-based adhesive with increased performance for <br />the installation of tiles in interior and exterior areas</p> <p>io n</p> <p>EN 12004 <br />LIGHTFLEX</p> <p>l o w e m iss</p> <p>class A1/A1fl <br />≥ 1 N/mm²</p> <p>Durability, as <br />Tensile adhesion strength after water immersion: ≥ 1 N/mm² <br />Tensile adhesion strength after heat ageing: <br />≥ 1 N/mm² <br />Tensile adhesion strength after freeze/ <br />thaw cycles: <br />≥ 1 N/mm²</p> <p>Properties: <br />• Tested to DIN EN 12004, C2 TE S1 <br />• High yield <br />• For interior and exterior use <br />• Easy and smooth application <br />• High initial grab <br />• Good sag resistance <br />• Variable, use also as a flow-bed adhesive <br />• Fulfils the required criteria for a “flexible adhesive” <br />• Reduced dust <br />• Very low emissions <br />Areas of application: <br />LIGHTFLEX is used as a thin bed adhesive and flowbed adhesive with a high yield for fixing vitrified <br />and earthenware tiles, ceramic tiles with low water <br />absorption ≤ 0.5% (fully vitrified), clinker, mosaic and <br />natural stone that is neither translucent nor sensitive to <br />discolouration. LIGHTFLEX is suitable for secure fixing to <br />all substrates in accordance with DIN 18157, part 1, <br />e.g. concrete, aerated concrete, render, cement-based <br />(CT) and calcium sulphate based (CA) screeds and <br />heated screeds, brickwork, plasterboard etc. as well <br />as to existing well bonded tiled finishes. Furthermore it <br />is suitable as an adhesive for lightweight construction <br />boards e.g. composed of extruded polystyrene <br />(tilebacker boards) and for fixing tiles to mineral-based</p> <p>or dispersion-based bonded SCHOMBURG waterproof <br />systems in e.g. wet duty environments, communal <br />showers, swimming pool surrounds and swimming <br />pools. Uneven wall or floor substrates can be levelled <br />out with LIGHTFLEX up to a thickness of 15 mm before <br />starting tiling. Due to the low weight, transportation to <br />the building site is considerably easier. <br />LIGHTFLEX is suitable for use in interior rooms in <br />accordance with the AgBB assessment scheme (panel <br />for the health related assessment of construction <br />products), the French VOC regulation and GEV <br />EMICODE. <br />Technical Data: <br />Basis: <br />lightweight fillers, cement, <br /> additives (polymer modified) <br />Colour: cement grey <br />Bulk density: <br />approx. 0.8 kg/l <br />Application/ <br />substrate temperature: <br />+5°C to +25 °C <br />Pot life *): <br />approx. 2 hrs <br />Open time *): <br />approx. 30 mins <br />Grout after *): <br />approx. 24 hrs <br />Foot traffic after *): <br />approx. 24 hrs <br />Full service conditions *): after 7 days <br />Cleaning: <br />clean with water immediately <br /> after use <br />Reaction to fire: <br />A1/A1fl <br />Testing: <br />·D <br /> IN EN 12004, MPANRW Test certificate <br />220003005-04 <br /> · D <br /> IN EN 12002 <br /> · G <br /> uidelines for flexible <br />adhesives by the German <br />Construction Industry and the <br />Association of the German <br />Tile Industry <br /> · R eaction to fire to <br />EN 13501-1 <br /> · Low emissions to the <br />AgBB scheme, French VOC <br />by-law and EC1R Plus to <br />GEV EMICODE</p> <p>Consumption: <br />· approx. 1.3 kg/m2 with a 6 mm notched trowel <br />· approx. 1.8 kg/m2 with an 8 mm notched trowel <br />· approx. 2.2 kg/m2 with a 10 mm notched trowel <br />· approx. 1.9 kg/m2 with an 8 mm Flowline trowel <br />· approx. 2.7 kg/m2 with a 10 mm Flowline trowel <br />· approx. 3.2 kg/m2 with a 12/20 mm medium <br />bed trowel <br />Packaging: <br />15 kg plastic bag <br />Storage: <br />Dry, 12 months in the <br /> original unopened <br /> packaging. Use opened <br /> packaging promptly. <br />*) These values relate to +20 °C and 65% relative humidity.</p> <p>Substrate preparation: <br />The substrate must be dry, load bearing sufficiently <br />flat and free from penetrating cracks and separating <br />substances such as oil, paint, laitance and loose <br />components. The substrate surface must have a largely <br />closed texture and its condition must be appropriate <br />for its type. For tiling, the substrate, its preparation and <br />product application must conform to DIN 18157, part <br />1. Prime absorbent substrates with ASO-Unigrund-GE <br />or ASO-Unigrund-K (diluted 1:3 with water). Calcium <br />sulphate screeds must be abraded, vacuumed and <br />thoroughly primed as with all substrates based on <br />calcium sulphate binders. If large format tiles are <br />to be installed and/or medium bed adhesives are <br />used, then due to the formation of a greater barrier, <br />we recommend priming with INDUFLOOR-IB2360. <br />Heated screeds must be commissioned in accordance <br />with technical regulations before applying finishes. To <br />determine whether the substrate is ready for tiling carry <br />out a moisture measurement with a carbide hygrometer <br />(CM device). The CM moisture measurement may not <br />exceed <br />•C <br /> T 2.0 CM% for screeds on insulation or separating <br />layers in interiors <br />• CA without underfloor heating 0.5 CM% <br />• CA with underfloor heating 0.3 CM% <br />The CM measurements are to be carried out in <br />accordance with current FBH-AD work instructions from <br />the technical information “coordination of cut out areas <br />for heated floor constructions”.</p> <p>Product preparation: <br />Mix LIGHTFLEX with clean water in a clean mixing <br />bucket until homogenous. <br />Mixing ratio: <br />as a thin-bed adhesive: <br />7.5 – 8.1 litres water: 15 kg LIGHTFLEX <br />as a smoothing mortar: <br />7.4 – 7.9 litres water: 15 kg LIGHTFLEX <br />as a flow-bed adhesive: <br />10.2 – 10.8 litres water: 15 kg LIGHTFLEX <br />Allow to stand for 4 minutes, then mix thoroughly <br />through once again. When using as a flow-bed <br />adhesive firstly mix LIGHTFLEX with approx. 8 litres of <br />water and subsequently mix in the remaining water until <br />a pourable consistency is achieved. Do not mix more <br />material than can be used within the pot life. Spread <br />the mixed adhesive over the substrate and dependent <br />on the tile format comb through with the appropriate <br />notched trowel. Fix the finishing material within the <br />adhesive open time. When installing large format tiles <br />larger than 60 x 60 cm, we recommend that LIGHTFLEX <br />is modified with UNIFLEX-B. Modification with this <br />elastifier improves the deformability and tensile adhesion <br />of LIGHTFLEX. Dependent on the level of modification, <br />S2 deformation class can be achieved which is <br />particularly recommended for tiles larger than 60 x 60 <br />cm. This considerably compensates for shear stresses, <br />which can lead to delamination in unfavourable exterior <br />conditions. UNIFLEX-B is mixed with water for improved <br />application and then mixed with LIGHTFLEX until <br />homogenous. <br />Mixing ratio: highly deformable (relates to class C2 S2, <br />deformation > 5 mm): <br />4.17 kg UNIFLEX-B : approx. 4.0 litres water : 15 kg <br />LIGHTFLEX. <br />Important advice: <br />• For fixing tiles in heavy duty areas in exterior locations <br />(balconies and terraces) install the highly elastic <br />bonded waterproofing system AQUAFIN-2K/M <br />and UNIFIX-2K. <br />• Levelling layers produced with LIGHTFLEX can be <br />tiled over after approx. 8 – 24 hours dependent on <br />thickness applied *): <br />• Where LIGHTFLEX is used as a flow-bed adhesive,</p> <p>•</p> <p>• <br />•</p> <p>• <br />•</p> <p>• <br />•</p> <p>•</p> <p>•</p> <p>tiles are generally ready for foot traffic and grouting <br />after 48 hours. <br />When fixing natural and synthetic stone refer <br />to the specific product properties (tendency to <br />discolour, risk of curling etc.) and the manufacturer’s <br />recommendations. In cases of doubt carry out a trial <br />area. <br />To avoid curling effects through water absorption, we <br />recommend the use of ASODUR-EK98 or ASODURDesign with agglomerate/synthetic stone. <br />When installing large format tiles larger than 50 x 50 <br />cm, in order to improve the adhesion, a scratch coat <br />should be applied to the rear of the tile or they should <br />be fixed in the buttering-floating method. <br />Prime calcium sulphate based substrates with <br />ASO-Unigrund-GE or ASO-Unigrund (mix ratio 1:3 <br />with water). <br />To avoid the formation of ettringite with calcium <br />sulphate based substrates UNIFIX-AEK is suitable <br />for fixing tiles on to these substrates up to a residual <br />moisture content of 1.0% when heated and 1.5% <br />when unheated, measure with a carbide hygrometer. <br />Adhesive that has already started to set should not <br />be re-lifed by adding more water or fresh adhesive. <br />There is a risk of inadequate strength development. <br />In continuously wet areas (swimming pools, containers <br />etc) we recommend the use of the system based thinbed adhesive UNIFIX-2K/6 onto the SCHOMBURG <br />waterproof membrane suitable for the particular <br />application. <br />Direct contact between cement-based tile mortars and <br />magnesium-based screeds leads to the destruction of <br />the magnesite screed through a chemical reaction. <br />Negative moisture penetration from the rear must <br />be prevented through appropriate measures. <br />Mechanically abrade the magnesite substrate and <br />prime with the epoxy resin INDUFLOOR-IB2360 <br />(approx. 250 g/m²) with a maximum of 5% water <br />as necessary. After waiting between 12-24 hours at <br />+20° C, then apply a second coat of INDUFLOORIB2360 (approx. 300-350 g/m²). Broadcast the wet <br />second coat with 0.5-1.0 mm quartz sand to excess. <br />After waiting for a further 12-16 hours continue with <br />the tile installation. <br />LIGHTFLEX is a hydraulically setting adhesive and <br />should be protected from the influences of water and</p> <p>frost until fully cured, which may take a few days <br />under unfavourable weather conditions. <br />• Protect areas not to be treated from the effects of <br />LIGHTFLEX. <br />• The relevant current regulations are to be observed. <br />E.g. <br />DIN 18157 <br />DIN 18352 <br />DIN 18560 <br />EN 13813 <br />DIN 1055 <br />The BEB data sheets distributed by the National <br />Association for screeds and finishes. The technical <br />information ““coordination of cut out areas with heated <br />floor construction”. <br />The ZDB data sheets distributed by the Technical <br />Association of the German Tile Industry: <br />[*1] “Bonded waterproof membranes” <br />[*2] “Finishes on calcium sulphate screeds” <br />[*3] “Movement joints in wall and floor tile finishes” <br />[*5] “Ceramic tiles, natural stone and cementbound composite slabs on cement-based floor <br />constructions with insulation” <br />[*6] “Ceramic tiles, natural stone and cement-bound <br />composite slabs on heated cement-based floor <br />constructions” <br />[*7] “Finishes in exterior areas” <br />[*8] “Finishes on poured asphalt” <br />[*9] “Tolerances in level” <br />[*10] “Tolerances” <br />[*11] “Cleaning, protecting, maintenance” <br />[*12] “Swimming pool construction” <br />Please use a current valid European Health & Safety <br />data sheet. Low chromate. <br />GISCODE: ZP1</p> <p>Information about the emission level of volatile compounds in indoor <br />air, which pose a health risk by inhalation, on a scale from class A+ <br />(very low emissions) to C (high emissions).</p> <p>This technical data sheet is a translation from the German language version and does not consider local building codes or legal requirements. It shall be used as general <br />reference for the product. Legally binding is only the German technical data sheet or the latest Data sheet from one of our foreign subsidiaries inside their sales territory. <br />31/13 HS/DR/CoS/JD</p>
