Are there alternative methods for cleaning cedar roofs besides power washing?
Yes, a bleach and water solution is known to be effective. It is important to be aware that there are conflicting reports within scientific literature regarding the effectiveness and long-term effects of this solution. On the other hand, there are contractors who have long-term (30 years plus) job site evidence of the effectiveness of using a bleach and water solution. Make your decision in conjunction with your contractor and his/her local experience. Q: If I elect to have the bleach and water solution applied to my cedar roof, what concentration should I use? A: Practical field knowledge, as reported by experienced contractors, demonstrates that a 1:1 solution of bleach and water works the best. Q: How should bleach and water be applied to the roof? A: First, ensure that adequate coverings are placed on surrounding areas, such as shrubs and other valuables. The 1:1 bleach and water solution should be sprayed on the areas of a dry roof that are in need of cleaning. Allow the solution
