Façade maintenance is a tedious task, and laser cleaners appear to be the solution forward. Multiple companies like Laser Photonics Corporation in the U.S. and P-Laser Industrial Laser Cleaning in Belgium make portable equipment that allows the cleaning of rust, oxides, oil, or other contaminants from a range of materials, including concrete, ceramics, glass, stone, and plastic.
The systems work using laser ablation. High-energy lasers are pulsed onto the contaminant at specific wavelengths and pulse lengths. The energy either turns the surface contaminant into a vapour or breaks particles up and eliminates their molecular bond to the surface.
Often, these technologies are used in industrial settings, but the technology has advanced enough to be used in building exteriors. In a recent press release, Laser Photonics wrote, “The CleanTech Handheld LPC-2000-CTHD is the perfect tool for exterior maintenance on facilities and infrastructure. The technology provides a time-efficient, cost-effective, and eco-friendly method of removing corrosion from walls and other structures while remaining reliable and durable. Through the utilization of this cutting-edge technology, operators can prevent and address corrosion that is affecting facilities and other buildings.” High-energy laser technology is not cheap. The capital costs are high, but they may be useful for particularly difficult and stubborn stains or dirt where ordinary cleaning methods aren’t working. This is certainly a technology to consider and watch, as over time it will probably fall in price, the way so many things do.
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