How did ash fall affect roofs of houses?

Ash fall can significantly impact roofs by adding substantial weight, which can lead to structural damage or even collapse, especially in older or weaker buildings. The abrasive nature of ash can also erode roofing materials, reducing their lifespan and effectiveness. Additionally, ash accumulation can block drainage systems, increasing the risk of water damage during rain. Regular maintenance and prompt removal of ash are essential to mitigate these risks.