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Without doubt, the ideal machine for a professional graffiti removal contractor is a hot water pressure washer operating at approximately 2000–3000 PSI and 2–3 gallons per minute.
Higher pressure is generally unnecessary for graffiti removal and can become an expensive waste of money. In most cases, pressure washers are simply used to rinse away dissolved or softened graffiti after the appropriate graffiti remover has been applied.
While the real secret is in using the correct graffiti removal chemicals, hot water pressure washing offers a major advantage. Hot water delivers significantly more cleaning energy than cold water pressure washers, helping remove stubborn graffiti staining and shadows that can remain on porous surfaces such as brick, concrete, and masonry.
In reality, approximately 95% of graffiti can be completely removed 95% of the time using a compact cold water pressure washer such as our EcoBlaster Portable Pressure Washer . However, when heat is needed, it becomes an essential part of achieving professional results.
Often an inexperienced operator when using cold water will try ‘blasting’ the remaining graffiti/shadow off, causing grief to the wall, and his customer. When that happens, remember the golden rule that 95% of graffiti comes off in 95% of the time and the remaining 5% will possibly take you another two lots of 95%’s (that is if it comes off at all).The other thing to remember is that even a 1 or 2% shadow is in fact a 100% failure.
Usually this difference is the hot water factor! With hot water you will have 100% success 98% of the time first time every time.IE:, There may be just a few jobs in the early days that will try you out, but we are always hereto walk you through them! Any commercial contractor serious about offering professional graffiti removal services will end up needing a hot water machine for a particular job, and in reality the right job can almost cover the extra investment by saving valuable time and materials.
Plus there are many other commercial cleaning jobs where hot water will be needed including degreasing, paint stripping and general cleaning of grime from hard surfaces.
Products mentioned in this article, including related graffiti removal products, tools, and surface protection solutions.
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