If the tiles are in really good shape and your only looking to clean them not prep for paint.
Pressure washer asbestos siding.
Many homes used this type of siding because it was easy to clean and more durable than other substances.
Then as long as your using a lower pressure wand with the fan spray you will be fine.
Apply the soap from the bottom up and rinse it away from the top down.
Allow me to remake 517 s point more emphatically.
Now change the pressure washer nozzle to the 25 or 40 degree spray tip and wash away all the detergent while keeping the wand at least 1 foot away from your house siding.
Asbestos cement can be dangerous if pulverized by sawing sanding breaking etc.
Asbestos siding achieved its height in popularity between the 1920s and 1970s.
If you use one on asbestos shingles the droplets of water in this aerosol will contain very fine fibers of asbestos which will be conveyed into the deepest recesses of your lungs.
If there is fraying on the edges of the tiles the answer is no.
Asbestos cement siding is very brittle and can be easily chipped cracked or broken.
These electric and gas pressure washers all under 400 have good psi but are compact and safe enough for home use whether for washing siding or your car.
The use of a pressure washer for maintenance can crack the siding and lead to moisture intrusion if the pressure setting is high enough.