Material defects usually arise from errors in the production process. Incorrect application may also contribute to damage caused to materials and facade systems. For these types of specific damage, the inspection conducted on site can be substantiated by laboratory testing. This method not only establishes the cause of the damage; it can also be used to determine the best repair method. Material defects may relate to brickwork, natural stone, concrete, sheet materials, wooden frames, aluminium frames, steel frames, facade insulation, insulation materials, fastening materials, glass panels, insulating windows, ceramic elements, tiles, adhesive systems, sealants, coating and paints, rubber profiles, etc.
Condensation problems and internal condensation
Because of the increased thickness of insulation materials in order to meet the requirements from the Buildings Decree and the sometimes limited ventilation, constructions become sensitive to condensation. Minor defects, for example, in a vapour barrier or an incorrect layering of the facade construction may cause internal condensation. An inspection regarding the structural design of the facade construction, registration of the indoor climate conditions, measuring of surface temperatures, supplemented by building physics calculations, may provide sufficient insight into the cause of the condensation problems and the possible repair solutions.
Due to the development of increasingly tall buildings, the wind loads on facade constructions are increasing. The storms in the 1990s made it perfectly clear that things had to change. The requirements currently set for the wind resistance of facade constructions have been tightened considerably. But even now, wind damage still occurs regularly. To be able to assess the wind resistance, BDA Geveladvies has a number of test setups to determine the wind resistance of the facade construction. By comparing the test results to the calculated wind load, it can be determined in advance whether the facade has sufficient wind resistance. If any wind damage has occurred, a representative test setup can be used to establish the cause of the damage. Subsequently, the modifications to the system can be tested to prevent the damage from reoccurring.
Leaks are a commonly occurring problem. Special equipment is used to simulate the wind pressure and the water load during these inspections. These tests are used to efficiently determine the water-tightness and to provide recommendations to correct any defects. We also have special equipment to assess the water-tightness of structural connections in a simple and efficient manner, or to conduct leak inspections.