Besides the need to create a good surface for painting asbestos siding there are two other areas of concern.
Painting asbestos house siding.
Our method of choice to first apply zinsser peel stop triple thick primer which is a water based acrylic binding primer designed to penetrate and stop previous coatings from peeling.
Paint for asbestos cement siding works by creating a permanent polymer based barrier between the asbestos and the elements.
Painting asbestos siding is often a much better alternative than trying to remove it.
Untouched asbestos is just as safe as any other siding or insulation.
Unfortunately asbestos never remains truly untouched because of nature.
Allow the primer to dry completely.
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Wrap asbestos siding in 6 mil thick plastic sheeting and secure the plastic with duct tape or place the debris in heavy duty plastic bags.
Painting asbestos siding once we have cleaned and prepared the surface then there is really no difference when it comes to painting.
One concern when repainting this type of siding is the small gaps between the shingles.
The first is the possible and almost certain presence of lead based paint on the siding and the second is the asbestos in the siding itself.
Begin by analyzing a paint sample for lead content.
Work from the top down removing the snails to keep from breaking the asbestos siding.
Scraping or brushing off old paint from asbestos siding is necessary before repainting but dangerous because it can release small asbestos fibres the approach of removing the old shingles and replacing them with new siding is an option that many homeowners have pursued though probably not as safely as they should.
The danger of asbestos lies in the particles that escape and can be inhaled.
Begin painting the siding with your choice of brushes and rollers making sure to check often for runs.
Do not throw or drop removed asbestos siding.
Painting cement asbestos siding or non asbestos fiber cement siding is in part a cosmetic decision.