Use a long handled brush and detergent.
Prepping asbestos siding for paint.
Not all latex paint is 100 acrylic so read the labels.
If you do power wash use as gentle a touch as possible and quit if you find that you re knocking pieces of siding off.
Then be sure that the siding is dry before applying either primer or paint.
Be sure to use both a primer and top coat that are recommended for use on cleaned fiber cement siding as recommended by the manfacturer of both the siding and the paint.
We apply a soap mildew killer under very low pressure and allow it dwell on the substrate for aprox 10 to 20.
When it comes to applying a long lasting coat of paint start with a 100 acrylic exterior latex primer followed by 100 exterior latex paint.
Congratulations asbestos cement siding is durable holds paint exceptionally well and is fire proof.
Use tsp with both if you can get it in your area.
Here at top coat painters we dial down the pressure and use a 4 step process.
We do a final rinse again.
The primer creates an adhesive surface for the paint and helps seal the color of the old paint.
Asbestos shingles hold paint very well when you use the right kind of coating.
They recommend that leaving the old shingles on is a safe choice though removal is a possibility too.
We rinse with plain water to pre wet the surface and remove very loose dirt.
You ll need to consult an asbestos expert to discuss removal and disposal.
You can roll it or brush it on but make sure you get under the small lip at the bottom of each asbestos siding shingle.
It is hard to top.
Allow the primer to dry completely.
Pressure washers are over rated.