Crack repair (wall surfaces)
Key Facts
When restoring and renovating buildings professional crack repair is essential. Cracks occur when stresses in the substrate are greater than the resistance of the individual building components. If water penetrates these cracks then the use of the building is seriously vulnerable. For this reason plugging the crack is indispensible in order to reinstate the resistance of the substrate. This is achieved not only by filling the individual crack but also by injection with special injection resins which spread through the substrate and e.g. on contact with water form a viscoplastic foam. With this system cracks are not only temporarily but sustainably waterproofed.
1 Hole drilling
Existing cracks are drilled at 20 cm intervals each offset at an angle of 45° to the crack.
2 Cleaning
Using oil free compressed air and compressor free the bore holes from any drilling dust.
3 Waterproofing water bearing cracks
Insert the appropriate injection packer into the bore hole. In the case of water bearing cracks firstly inject AQUAFIN-P1. The material reacts with water to form a watertight, visco-plastic foam and stops water ingress. Once hardened excess foam is removed flush with the surface.
4 Plugging the crack
In the case of non water bearing cracks the crack is plugged with ASODUR-EKF. Once the plugging material has completely hardened then AQUAFIN-P4 is injected.
5 Permanently waterproofing cracks
When using AQUAFIN-P1, an additional injection of the elastic crack waterproofing material AQUAFIN-P4 is necessary.
6 Closing off the bore holes
Once the injection resin has hardened, the plugging material can be removed as necessary for visual reasons. Close off the bore holes with ASOCRET-BIS-1/6.