Balconies and terraces are constantly exposed to rain, splash water, and temperature fluctuations. Therefore, the waterproofing should always be crack bridging.
When working with liquid applied bituminous waterproofing , prime the prepared and clean substrate with KOSTER Polysil TG 500. A fillet of KOSTER Repair Mortar Plus is installed at wall/floor-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. KOSTER KBE Liquid Film is suitable. Alternatively, the rubberized bitumen thick film sealant KOSTER Deuxan 2C can be applied. At wall/floor junctions and areas in danger of cracking, KOSTER Glass Fiber Mesh is embedded into the fresh first waterproofing layer.
A topping protects the waterproofing against mechanical damage. A gliding layer of two layers of plastic sheeting is installed under the topping.
Always adhere to the specifications in the respective Technical Guidelines.