Soft washing vs pressure washing — which does your surface need?
Pressure washing removes dirt using mechanical force. Soft washing removes it using a cleaning solution and dwell time at low pressure.
Neither is universally better. The surface, its condition and what is actually growing on it decide which one is appropriate — and choosing wrongly on a delicate finish causes damage that cannot be undone.
Surfaces that generally suit pressure washing
- Block paving and concrete driveways in sound condition
- Flagged and concrete patios
- Paths, steps and hard standings
- Robust masonry where the surface is intact
Surfaces that generally need soft washing
- K-Rend and other silicone or through-coloured renders
- Painted and traditional sand-and-cement render
- Roof tiles, especially older or brittle coverings
- Conservatory roofs, glazing bars and seals
- Fascias, soffits, cladding and UPVC
Condition matters as much as material
A driveway that suits pressure washing when the blocks are sound is a different job once the surface has started breaking down or the joints have washed out.
The same applies to roofs and walls. Two properties with identical materials can need completely different approaches based on age and condition alone, which is why the surface gets assessed before anything is chosen.
Why treating growth outlasts blasting it
Algae, moss and lichen are living growth. Force removes what is visible; treating the surface deals with more of what is there, so it tends to stay clean longer without needing repeated heavy cleaning.
Want it looked at properly?
Send a few photographs of the elevation along with the address, and Rob will tell you what can realistically be improved, what it will cost and when it can be done.