Understand what you can see · Pith
White deposits on exterior brickwork
White marks are an observation to document, not enough information to prescribe cleaning or repair. Their timing and position can help an assessor decide what to investigate.
Record changes with conditions
Photograph the area when dry and after wet weather if it is safe to do so. Note whether the marks return after cleaning and whether nearby surfaces are also affected. Include the wall above the marks and adjacent details.
Define the next step
Avoid testing strong cleaners on the wall before assessment. Ask about the cause, the material and an appropriate treatment rather than focusing only on removing the colour.
Take it to your project conversation
Your repair checklist
Use these points to prepare your brief. Tick them as you go; the checklist is for this page visit.