Styrbit 2000

The substrate for Styrbit 2000 can include mineral surfaces (such as concrete, cement plasters, cement-lime plasters, concrete blocks, and ceramic bricks), old and dispersion bituminous coatings, as well as bituminous felt.
The substrate intended for applied product must be bound, seasoned, load-bearing, be continuous, dry or slightly damp. The substrate should be cleaned mechanically; dust, any loose layers, sharp protruding edges and impurities that worsen adhesion should be removed. If there are cavities in the substrate, honeycombing, gravel pockets and other unevenness, the substrate should be levelled and repaired, the cavities should be filled. The substrate on which the product will be used must be continuous. Partitions made of small size elements should have an equal face, a full joint. If this condition is not met, a levelling plaster should be made. Any external right angles should be bevelled, and internal angles rounded off - make facets with NEXLER RENOBUD R 103 mortar (on mineral substrates) or KMB compound on asphalt substrates, felt. Prepared substrate should be primed with NEXLER BITFLEX Primer before applying the compound. As part of the preparation of the old bituminous substrate any impurities, loose particles and elements of the previous coating should be removed from the surface.  Fill any cavities in the substrate, repair any other elements connected to the waterproof coating (e.g. service penetrations). In order to do that, use NEXLER Arbolex Aqua Stop roofing putty. 

Walls made of small-gauge elements in buildings with a basements: On jointed masonry (e.g. concrete blocks), a levelling plaster should be applied. Prime the prepared substrate with a NEXLER BITFLEX Primer solution.

Check the production date on the packaging before use. The product should not be incorporated beyond its shelf life. The product should not be objectionable (e.g. contain lumps, fibres, discolouration) after opening. After mixing, the compound should be homogeneous and free of lumps and clumps resulting from under-mixing. Do not use a product that bears signs of freezing. The correct consistency of the product is not dry or rubbery. When properly mixed, the product forms a homogeneous coating when spread over the surface with a tool.

Styrbit 2000 is a ready-to-use product. Before use, the product should be mixed until a homogeneous mass is obtained. A water may be released on the surface of the stored product. This does not indicate a defect or poor quality of the product.

Thickness of a layer should be controlled by material consumption control on a dedicated surface. In addition, it is recommended to measure the thickness of the freshly applied sealing layer with special inspection plates (coating thickness meter), the measurement point should be filled with putty immediately. 
After it has dried, a properly made coating should be a uniform, clean coating, without flakes and other defects. The coating should adhere closely to the primed substrate.

Waterproofing of underground parts of buildings: Styrbit 2000 should be applied on a previously primed substrate in a minimum of two coatings with a steel float or a spraying method. Following layers should be applied after the previous ones are dries, perpendicularly. Service penetrations and areas exposed to uncontrolled cracking should be reinforced with a sealing tape. Do not backfill the excavation before complete bonding of the coating. The coating should be protected against mechanical damage, e.g. with polystyrene boards. During binding, the freshly applied layer should be protected against: precipitation and strong sunlight.

Bonding of EPS and XPS polystyrene boards to foundation walls: Apply thermal insulation boards after the waterproofing layer has fully set (dried). Hydrophobized insulation boards should be sanded before bonding. Begin bonding at the bottom of the excavation. Apply Styrbit 2000 compound in spots on polystyrene boards (10 - 12 spots per 0,5 m² board). Lay the boards in a circular motion on the surface, pressing against the substrate. Bonding time is dependant on weather conditions. Do not use for bonding of polystyrene on horizontal surfaces or surfaces with small inclination.

Before use, please read the application details in the product's Technical Data Sheet.