Waterproofing of balconies and terraces with liquid applied bitumen based waterproofing systems

Balconies and terraces are constantly exposed to rain,splash water and high temperature fluctuations. Therefore the waterproofing should always be crack bridging.

When working with liquid applied bituminous waterproofing the prepared and clean substrate is primed with KÖSTER Polysil TG 500. A rounded fillet made from KÖSTER WP Mortar is installed in wallfloor-junctions in order to protect the subsequent layers from damage caused by movement.

The waterproofing is carried out with a liquid applied coating in two layers. Ideally suitable is KÖSTER KBE Liquid Film. Alternatively the rubberized bitumen thick film sealant KÖSTER Deuxan 2C (4 – 6 mm) can be applied. In the wall-floor-junction and areas in danger of cracking KÖSTER Glass Fiber Mesh is embedded into the fresh first waterproofing layer.

A screed protects the waterproofing against mechanical damage. A gliding layer consisting of 2 layers of PE-foil is installed under the screed.

Always adhere to the specifications in the respective Technical Guidelines.



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