When Cleaning Causes Damage: Hidden Consequences for Historic Buildings

Exterior treatment is often judged by the immediate visual result. A façade that appears brighter or a roof that looks free from staining may be taken as evidence of a successful intervention. However, for historic buildings, the true impact of exterior treatment is rarely visible on the day the work is completed. Materials such as […]

Exterior Treatment and Professional Competence: Why Standards Matter

  Exterior treatment work sits in a curious position within the built environment sector. On one hand, it involves direct intervention in historic and modern fabric — stone, lime render, slate, timber, lead, glazing and delicate architectural detail. On the other, it remains largely unregulated. There are no universally recognised competency thresholds, no mandatory accreditation […]