Surfaces & materials

Surfaces and finishes, and how each one wants to be cleaned

The single most common cause of damage is not dirt, it is the wrong method on the wrong finish. A pressure washer that is fine on concrete block paving will scar silicone render and open up soft sandstone. These pages cover the finishes we meet across Plymouth and the surrounding villages, and what each one tolerates.

Finish-by-finish

How we decide on method

  • Anything painted, rendered or coated is treated at low pressure with dwell time, because the finish is the thing we are trying to keep.
  • Hard, dense surfaces such as concrete paving and engineering brick can take mechanical cleaning, controlled with a flat surface cleaner instead of a bare lance.
  • Soft or porous stone is treated conservatively and often over more than one visit, because it will not grow a new surface back.

Services these guides relate to

Other topics

Not sure what your walls actually are? A close-up photo is usually enough for us to identify it.

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