How To Sack And Patch A Concrete Wall
This is a good size area to work in so the drying of the slurry does not go faster then your ability to rub out the wall.
How to sack and patch a concrete wall. 2 i have tested several types of bags. Ardex twp is a trowelable portland cement based finishing compound used to fill and smooth interior and exterior vertical concrete surfaces such as tilt up walls pre cast or poured in place concrete panels and other concrete or masonry surfaces prior to sealing or painting. The old way sacking and patching the traditional method for repamng concrete surface defects is. 4 i can disprove your theory that the concrete will not set up correct due to water ratios.
And if a wall is chipping or crumbling it s fair to say the bag was taken off way to early. Injecting a typical wall crack with an epoxy or urethane resin is done under pressure pushing the material from the inside all the way to the outside. Professionally made they can be extremely expensive but they always look beautiful. However an enterprising individual with a few sacks of concrete and a garden hose can make an equally useful and elegant concrete bag retaining wall.
3 that video above with the guy putting steel in the bags is my video. The injection process fills the crack from top to bottom from inside to outside. Apply the slurry to your new concrete wall by holding the trowel blade to the wall so the slurry is pressed onto it and wiping the slurry across the wall with a smooth arcing motion. Then try to patch the wall so the repair matches the rest of the surface explains drennan.
The only way to repair foundation wall cracks successfully is by the injection process. 1 i have been doing these walls for 30 years.