In addition, the figure for the scratch layer – 1.0-1.5 liter/m² depending on the substrate roughness – must be added on top. The consumption figures given in this document will increase if the applicator lacks experience.Refer to our comprehensive document “General Guidelines for Waterproofing Works with Bitumen Thick Coatings” for full information related to important issues like assessment of water load, thickness control, and all execution details.Do not add any foreign substances during mixing and application.In the case of waterproofing water-impermeable concrete structures in the areas of working joints and butt joints of pre-cast concrete elements, comply with the national guideline (if existing) relating to water-impermeable concrete structures.2018, issued by the German Construction Chemicals Association) and the WTA leaflet “Retrospective Waterproofing of Ground-Contacting Structures”. Follow the national standards and/or guidelines; if not issued, and if requested, refer to the norm DIN 18533 “Waterproofing of Ground-contacting Building Structures”, the “Guideline for Planning and Execution of Waterproofing Works with Polymer-Modified Bitumen Coatings (PMBC)” ( 4th edition, Dec.Prior to backfilling the excavation pit use the fleece-lined drainage and protection foil weber.sys 983 over the basement walls in order to protect the waterproofing system.Do not bond protective boards or insulation boards and do not fill the excavation pit until the material has completely dried. ![]()
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