Of course, once you start washing your roof, it will get wet and pose a risk. However, it’s still a smart idea to reduce that risk as much as possible.
Keep in mind that your power washer or hose will extend your reach considerably. If any out-of-reach areas look like they need scrubbing afterward, hire a professional to do so.
Assist you in bringing gear up and down. Alert you to any hazards that you may not be aware of. Call for help in the event of an accident.
Bolt-strap anchor for corrugated roofs. Ridge clamp for standing-seam roofs.
Rinsing your roof with water at least once a year should reduce the need for using chemical cleaners.
If you have to first clear a path in order to attach safety lines and other gear to the roof, wait until the washed path has dried before climbing onto the roof.
Roof designs vary greatly, so don’t treat this as an absolute must. If your roof is particularly steep and/or has sections well out of reach, always opt for safety and hose it down from a lower, safer point.
With persistent dirt that refuses to come off, go slow and steady and scrub for longer rather than apply more pressure to speed things up. The more pressure you add, the greater the risk of damaging the panel.
If the cleaner has bleach as an ingredient, rinse the scrubbed area with clean water immediately afterward. Do not wait until you complete a whole panel as you did with the detergent. Rinse all panels again when the entire job is finished. A bleach and water mixture will work well for killing any moss on your roof. [20] X Expert Source Allen LeeHome Improvement Specialist Expert Interview. 10 July 2020.