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| ATLAS WODER E SEALING SYSTEM |
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| Ceramic facing is resistant to moisture, but it does not serve as a watertight substrate protection. Water can penetrate any gaps (e.g. at system passages), poorly sealed borders of bathtubs and shower bases, etc., damping substrates, mostly those of aerated concrete, of plasterboard panels and of gypsum mass. This may lead to damages, washing away binder, concrete cracks, mould and efflorescence. Places temporarily exposed to humidity and water are referred to as humid and wet building areas. These include mainly floor and walls near shower cabins, bathtubs and sinks. To determine a wet area, it is assumed that it includes the whole floor and walls up to 10 cm above the floor level. In the case of walls, the sealing should reach a bit above taps or the place where the shower is fixed, but the areas are often sealed up to the ceiling. Layout of wet and humid areas in bathroom is shown in figures. Therefore, it is recommended to secure places where increased humidity is present e.g. bathrooms, shower cabins, toilets, kitchens and laundries, etc. using ATLAS sealing system. The system can also be applied to protect foundations, cellars, balconies and terraces. |
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| Begin identification of each substrate (regardless of the kind) from verification of its basic properties. The substrate under ATLAS WODER E should be structurally sound i.e. strong, stable and free from dust, dirt, salt efflorescence, loose or flaking elements, remains of old paint, oil and other substances that can impede foil adhesion. Scratches and holes in the wall should be widened mechanically and filled with ATLAS LEVELLING MORTAR. To level the whole wall surface, use ATLAS PLASTERING MIX. To level floor surface, use one of ATLAS rough floors. Prime particularly absorptive substrates using ATLAS UNI-GRUNT. Grind and de-dust all dusty or gypsum substrates should be abraded and dust-free. ATLAS WODER E can be applied over completely dried surfaces, which should be confirmed by the following “foil test.” Spread a piece of plastic foil on the substrate, press it down and after several minutes look at the foil surface. If there is condensed water vapour, the substrate is not ready for ATLAS WODER E. Prime dusty substrates with ATLAS CERPLAST plastering mix. ATLAS WODER E is not suitable for application over fibre-plasterboard panels. |
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| Sealing tape and accessories fixing
Internal and external corners are first to be fixed in ATLAS WODER E system. To do this, apply ATLAS WODER E with a steel float on the substrate in room corners, at the contact points of walls with floor and of adjacent walls as well as along rough floor expansion joints. Set perforated side strips of corners and ATLAS SEALING TAPES in the freshly distributed layer. Do the same with insulations of areas of water-sewage system pipes and floor drains. To do this, use wall and floor rings.
ATLAS WODER E foil application
Having all key places protected, apply ATLAS WODER E over tapes and other accessories as well as all the surfaces to be insulated. The sealing foil should be applied in two layers. The first layer should always be applied with a paintbrush or a paint roller, and the second layers should be applied with a paintbrush or a float made of steel. The second layer can be applied only after the first one completely dries (after 3 hours). Min./max. layer thickness is 1 mm to 5 mm. Do all the work in substrate temperature from +5°C to +30°C. Freshly made surfaces e.g. plaster or subfloors can be sealed after at least 14 days since they have been completed. Protect sealed surfaces for ca. 3 days from water under pressure. After setting, protect the resulting coat from damages by applying plaster, subfloor or facing. Adhesives for ceramic tiles can be used on ATLAS WODER E foil e.g. ATLAS, ATLAS PLUS, ATLAS KARO, ATLAS CAL N. |
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| The system has been given Technical Approval no. AT-15-5032/2001 by the Building Research Institute. |
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