Pressure Washing Commercial Concrete The Right Way

When you picture cleaning concrete — removing stains, gum or grime — what do you imagine?

The mental picture is likely a power washer shooting water at high pressure, and the operator swiping the power washer wand from side to side to push the water in a single direction.

While this may work for a residential two-car garage or a driveway, it’s not a practical way for a business owner or parking garage manager to clean concrete.

That’s because water that has collected pollutants or chemicals off of concrete — so-called ‘gray water’ — used by a business or permitted by a city likely can’t be sent down city storm sewer lines.

Increasingly, laws require proper disposal of gray water from concrete and other commercial building cleaning. Continue reading “Pressure Washing Commercial Concrete The Right Way”

Cleaning, Sealing Chaska Paver Patio

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A Chaska family’s nearly 20-year-old backyard paver patio was showing its age, with much of the sand washed out between the pavers and replaced with dirt, allowing moss and vegetation to grow between the pavers.

The family called Clean ‘N Seal after being referred to them by the professional landscaping company that installed the paver patio.

After examining the patio and discussing the options with the homeowners, Clean ‘N Seal began the work with its combination steam cleaner and pressure washer.

The machine uses the pressurized hot water to clear out the dirt and vegetation from between the pavers and extract it at the same time. The steam cleaning removes dirt and grime from the paver itself.

At this point, on some jobs, chipped or damaged pavers would we replaced and shifting pavers would be put back in place. For this job, though, that hadn’t yet started to happen.

Like on all jobs, Clean ‘N Seal used an edger to clean grass from the patio’s edge.

Once the dirt and vegetation was cleared, and the grass edged away, Clean ‘N Seal brought in filtered, sifted and dried joint sand used especially for between pavers. The sand was spread across the patio to fill in the space between the patios.

A vibrating plate tamper was used to settle and compact the pavers and sand.

Lastly, a sealer was sprayed across the patio to keep sand from eroding away and protect the pavers from UV rays, insects and stains.