When it comes to cleaning your roof, pressure washing is not the best option. A pressure washer is a powerful tool that can cause damage to the roof, as well as enter through any small cracks or holes and cause water damage inside the house. It is important to never use a pressure washer at full power, especially when aiming it at an angle that could impact shingles from below. This could force water to enter under the shingles, which could separate them from the roof and lodge the water underneath.
Rain may affect some repairs and roof maintenance projects, but it won't have an impact on a pressure washing job. This is why it is essential to consider whether you should pressure wash your roof in the first place. If you have a skylight and you are pressure washing your house, there is a chance that water will leak if you don't properly prepare the skylight window. It is best to consult an experienced tile roof cleaning service in Vancouver, WA or a tile roof repair company in Portland, Oregon, to analyze your roof and determine if pressure washing is recommended and, if not, what other options are available. This cleaning method works great when the surface being washed can withstand that level of water pressure.