Soft Wash vs. Pressure Wash
As our neighborhoods in the Mid-Atlantic region are aging and the trees and shrubs grow bigger, so is the propensity to see our roof shingles develop unsightly black stains, or worse: lichens and moss. Those beautiful maturing trees provide shade and moisture retention which facilitate the growth of the microorganisms that become the unsightly black stains. If left untreated those black stains then lead to lichens & moss growth which will damage your shingles.
Just like most things in life, the decision on whether to soft wash or pressure wash roof shingles is….. it depends. If your roof shingles have those unsightly black streaks only, then a “soft wash” may be sufficient. First, we pre-wet surrounding plants and shrubs with freshwater to protect them from the very little misting or overspray which may occur during the cleaning process. We then apply a saturating bleach solution to the roof shingles. We do not flood the shingles as we want to minimize run-off solution, this would just be a waste of chemicals. When feasible, we capture what little run-off there is from the downspouts. Your asphalt shingles will be transformed almost immediately.
Pressure washing will be necessary when heavy accumulations of lichens and/or moss are present. We usually pre-treat the roof with the bleach solution to get the cleaning process started. We then mechanically remove the lichens and moss by the force of the water. A skilled technician such as ours will do this without any damage to your shingles. We then frequently apply a second application of the bleach solution to finish the cleaning and beautification process.
Again, just like most things in life, there can be exceptions to what is written above. We’ve been doing this for 28+ years and have seen it all. Our experienced and skilled supervisors and technicians will make the final determination (in consultation with you) as to the proper procedure for your particular roof shingles cleaning.
I hope you found this helpful. Please call or contact us if you have any further questions or would like to schedule a free consultation, or schedule a cleaning of your shingles…or house, or deck, fence, driveway, walkway, etc.
Alexandria VA – Pressure Washing & Other Areas We Serve
Our service area extends from Northern Virginia, Maryland, and Washington DC. Here are some of the areas we serve: Alexandria, VA, Arlington VA, Centreville VA, Chantilly VA, Clifton VA, Culpeper VA, Dulles VA, Falls Church VA, VA, Fairfax VA, Fredericksburg VA, Herndon VA, Leesburg VA, Lorton VA, Manassas Park VA, Manassas VA, Marshall VA, McLean VA, Middleburg VA, Occoquan VA, Purcellville VA, Reston VA, Spotsylvania VA, Springfield VA, Triangle VA, Vienna VA, Warrenton VA, and Woodbridge VA.