Surface is chaulky with very little flaking.
Preparing asbestos siding for painting.
We rinse with plain water to pre wet the surface and remove very loose dirt.
Congratulations asbestos cement siding is durable holds paint exceptionally well and is fire proof.
Use bleach for stuff that is growing green.
You must be careful not to damage the wood while doing so as the water pressure is strong.
Use a long handled brush and detergent.
When you are done cleaning paint the siding with a suitable primer.
On preparing the surface for paint.
One concern when repainting this type of siding is the small gaps between the shingles.
You do not want to scrape or sand the shingles directly as you could release asbestos but.
Then be sure that the siding is dry before applying either primer or paint.
That said you ll still need to take some precautions if you decide to paint your asbestos siding.
Here at top coat painters we dial down the pressure and use a 4 step process.
Preparation before coating is the key to a successful paint job.
Powerwash the siding to remove any excess dirt or paint with a low pressure pressure washer.
Start at the top of the house and work your way down aiming the nozzle downward and keeping it moving constantly.
Maybe add a mild cleaner that wont harm the plants.
Begin painting the siding with your choice of brushes and rollers making sure to check often for runs.
We apply a soap mildew killer under very low pressure and allow it dwell on the substrate for aprox 10 to 20.
Besides the need to create a good surface for painting asbestos siding there are two other areas of concern.
Begin by analyzing a paint sample for lead content.
It is hard to top.
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.
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.
Use tsp with both if you can get it in your area.
Allow the primer to dry completely.
Jomax is good product to use and all you need is a pump up garden sprayer and a hose to use this product.
Pressure washers are over rated.
Painting asbestos siding compared to other similar hardie board or fiber cement siding there is not much difference in terms of painting asbestos siding after you prepped and cleaned the surface.
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.
We do a final rinse again.
