The simple answer to this question is yes, power washing can and in many cases will cause damage to your siding. This is one of the main reasons why we choose to offer soft washing which is a much safer and more effective way of cleaning your siding.
Soft washing is a popular alternative to power washing. It is a process of using cleaning solutions and soaps to gently clean your exterior surfaces rather than using dangerous high pressure washing.
After a roof wash, you can expect your roof to remain clean for up to 4 years. However, this can vary drastically based on factors like humidity and shade in your area.