You can power wash any loose paint or simply scrape and remove any.
Pressure washer asbestos siding.
When you say asbestos shingles i presume you mean asbestos siding shingles.
Only use a pressure washer at a distance of 6 feet or more.
Power washing of asbestos wall tiles can be done but its condition must be considered first.
This is one of the few ways that you can damage it.
It is difficult to find replacement siding for repairs.
These are easily prepared and easy to repaint.
The biggest concern is that you should avoid power washing asbestos siding as it can chip or damage the siding and release dangerous asbestos fibers into the air.
Do not use a high pressure hose to clean fiber cement siding.
Mix one part bleach and three parts water and spray.
The use of a pressure washer for maintenance can crack the siding and lead to moisture intrusion if the pressure setting is high enough.
Apply the soap from the bottom up and rinse it away from the top down.
Remove any biological growth such as moss and fungus from the surface of the siding.
Asbestos cement can be dangerous if pulverized by sawing sanding breaking etc.
Commercial pressure washers are great for the toughest of stains and paint prep.
Then as long as your using a lower pressure wand with the fan spray you will be fine.
Safety first when pressure washing.
The power washer is going to release particles of asbestos regardless of how careful you are with it.
How to clean asbestos siding.
If you feel that you need to use a pressure washer especially on harder to reach locations only use it at a low pressure under 1500 psi with a wide tip.
If the tiles are in really good shape and your only looking to clean them not prep for paint.
For the toughest deep cleaning jobs consider 3100 psi pressure washers.
This product cannot be refurbished unlike other forms of siding.
If there is fraying on the edges of the tiles the answer is no.
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.
Avoid direct sunlight and let the detergent sit for 5 10 minutes.
Too much pressure from a power washer could create an unwanted hole in vinyl siding mark concrete or splinter wood.
Place the detergent in the bucket and.
Although most of those particles will be trapped in the water while you are washing it the water will eventually evaporate and release those particles.