You don't have to hire a professional to clean your roof, especially when you can complete the job yourself for a fraction of the cost.
A pressure washer can quickly remove years of ugly moss and lichen growing up on your roof.
Just make sure you're careful up there! Cleaning on top of your roof can be very dangerous and lead to serious injury.
The power of a pressure washer can damage the shingles on your roof, so it's important that you select the proper spray tip.
It's recommended to start with a medium pressure spray pattern, and adjust from there accordingly. Always stand on a dry area of the roof, as wet shingles can be very slippery.
Aim the pressure washer down the roof, and keep the tip of the wand at least a foot away from the surface when starting. NEVER aim your pressure washer up the roof, as it can push water under the shingles and cause leaking into your home.
Cover a few shingles at a time, and move the wand closer to the surface as more power is needed. It is very important that you constantly inspect for any damage you may be causing throughout your cleaning.
Follow these steps and your roof will be looking as good as new in no time.