There are these procedures:
- Sandblaster: ideal for sensitive facades
- high pressure cleaner: for robust surfaces
- Dry ice: environmentally friendly and gentle cleaning
- Gas burner: when fire hazards have been excluded
- hydrochloric acid: as a last resort
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Sandblaster
Root residues can be removed by jets of compressed air that spray sand onto the facade. Sandblasters have the advantage that they achieve success in areas that are difficult to access. They are gentle and are also suitable for sensitive clinker facades.
high pressure cleaner
With this method, the ivy residues are loosened and washed away using a hard jet of water. Hot water or the addition of lime-removing cleaning agents increase the effect. Stubborn residues can be removed with a dirt grinder, which is placed on the high pressure cleaner(€ 199.00 at Amazon *) is plugged. The subsurface is often damaged by the high pressure. Clinker joints or masonry will not withstand the force of the jet, which increases the damage.
Dry ice
Dry ice pellets made from frozen nitrogen are sprayed onto the facade at high pressure. This process blasts off root residues through contact with the minus 80 degrees cold ice particles, whereby the subsoil is not impaired. Sensitive surfaces such as clinker can also be cleaned gently. The pellets change into a gaseous state so that no residues remain. If the masonry has already been damaged, the pressure jets can further destroy the crumbly material.
Gas burner
Flaming the adhesive roots causes them to dry out, so that the residues can then be removed with a brush. When working with a flame, caution is required, as insulation materials in the house walls can smolder unnoticed by the effects of heat and catch fire.
hydrochloric acid
Plastered walls and joints can be cleaned with diluted hydrochloric acid, which you spread over the facade with a brush. It softens the chalky subsoil and, after it has taken effect, ensures that the ivy roots loosen. Before brushing off the residue, you should remove the acid residue with water from the Garden hose rinse off. Be aware that this method is dangerous for your health and the environment.
