Applying AlgoClear Pro
The appropriate technique allows a complete decontamination of a building. This consists in spraying fast and coarse droplets onto the surface until saturation. Pressure and flow are important to ensure delivery in windy conditions. The product is left to dwell beneath the surface, where it will provide protection and finish the decontamination process.
Using AlgoClear Pro with brush
When AlgoClear Pro is brush applied, the foam resulting from brushing a biofilm is often reddish brown or yellow. When this is the case it needs rinsing by mean of a final biocidal spray before drying.
Using a gel
The MetaClear and OxiClear are gels formulated specifically for cleaning render and masonry. The viscosity prevents capillary ingress into the substrate. This is particularly important when the active ingredient needs to be kept out: Sodium hypochlorite and acids in particular.
A gel does not evaporate. As a result it does not release fumes. This is as important to the building occupiers and neighbours as it is to the operator who would otherwise inhale them for prolonged periods, whether their smell is masked or not.
The concentration of a gel remains constant throughout the cleaning process. This cannot be maintained when a water soluble oxidising agent is used (sodium hypochlorite). As the water evaporates, the surface concentration increases with the associated risk of damage. Controlling the process using oxidising agents is critical to delivering quality.
Churning and dwell time
Gels do not penetrate by capillary action. It will only dissolve the first layer a few microns deep. To dissolve the full layer of metabolites, one needs to agitate the gel with a brush to renew the active interface. Dwell time has some short effects, but , and not has much as churning the gel.