If your home was built before the 1980s, there’s a chance the exterior siding contains asbestos. That doesn’t necessarily mean it needs to be removed. Painting existing asbestos-cement siding may be a practical option, provided the material is in good condition and the work is approached correctly.

The important thing to understand is that asbestos siding isn’t prepared the same way as ordinary wood or fiber-cement siding.

Why Older Homes Have Asbestos Siding

Asbestos-cement shingles were commonly installed on residential homes throughout much of the 20th century. They were popular because they were durable, fire-resistant, and capable of withstanding years of exposure to the elements.

You’ll still find them on older homes throughout New York, New Jersey, Connecticut, and other parts of the country. Intact asbestos-cement siding left undisturbed generally presents a much lower risk than damaged material that releases airborne fibers.

Can You Paint Over Asbestos Siding?

Yes, in many cases. If the shingles are intact, firmly attached, and the existing coating is in reasonable condition, repainting may be possible without removing the siding.

A house with faded but otherwise sound paint is a very different project from one with extensive peeling, cracking, or broken shingles. Before considering paint colors or products, the siding needs to be evaluated.

The Biggest Concern Is Surface Preparation

On most exterior painting projects, preparation involves scraping loose paint, sanding rough edges, washing the surface, and priming exposed areas. With asbestos-cement siding, some ordinary preparation methods can be hazardous.

Sanding, grinding, wire brushing, aggressive pressure washing, or breaking asbestos-containing shingles can release asbestos fibers into the air. A contractor should not approach this material as ordinary siding.

If substantial paint removal or repairs are necessary, an appropriately qualified asbestos professional should evaluate the project before work proceeds.

What About Primer and Paint?

Asbestos-cement siding can accept exterior coatings, but choosing the right products depends on the condition of the surface and what’s already on it.

A quality exterior acrylic coating may be appropriate for sound, properly prepared siding. Primer may also be necessary depending on the existing coating, surface condition, and manufacturer’s recommendations.

Even the best exterior paint won’t compensate for an unstable surface or improper preparation. Applying more paint over a failing coating doesn’t solve the underlying adhesion problem.

Should You Paint or Replace the Siding?

If the shingles are intact and the existing paint is sound, repainting may be the more practical and economical choice.

If the siding is extensively damaged, deteriorating, or requires significant disturbance to prepare, replacement may deserve consideration. Removing asbestos-containing siding introduces additional safety, regulatory, and disposal requirements that should be reviewed with a properly qualified contractor.

Painting Asbestos Siding Before Selling a Home

If you’re preparing an older property for sale, faded siding can make the whole exterior look tired. Repainting may improve appearance without the expense and disruption of replacement—but only when the siding and existing coating are suitable.

A seller or real estate agent should avoid treating an unknown material as a quick cosmetic fix. Have suspect siding evaluated first, and disclose known material conditions as required by applicable law. The goal is an attractive, properly maintained exterior, not covering up damage.

Don’t Forget About Lead Paint

Many homes with asbestos-cement siding are old enough to have been painted with lead-based paint. That means a contractor may be dealing with two different potential hazards: asbestos in the siding and lead in the existing paint.

Both can affect how the surface is evaluated, prepared, repaired, or removed. Identifying the materials before work starts is important.

When Should You Call a Professional?

If you’re unsure whether your siding contains asbestos, consider having the material tested by a qualified professional.

If the shingles are broken, existing paint is peeling extensively, or the project requires disturbing the siding, consult a contractor with the appropriate asbestos qualifications before proceeding. A professional assessment can help determine whether repainting is reasonable or additional work is necessary.

Final Thoughts

Asbestos siding doesn’t automatically need to be removed simply because it’s old. In many cases, maintaining an existing surface and applying a compatible coating may be a reasonable option.

But the decision should start with the condition of the siding, not the paint color. When asbestos-containing materials are involved, proper evaluation and safe preparation are more important than getting another coat of paint on the house.

At Be Colouring, we believe a successful exterior painting project begins with understanding the surface underneath the paint. We provide residential and commercial painting services throughout New York City, Long Island, Westchester, parts of Connecticut, and New Jersey.

For homes with suspected asbestos-containing siding, appropriate material evaluation and any necessary specialized work should be addressed before ordinary painting begins. Learn more at becolouring.com.

Disclaimer: This article provides general educational information and is not a substitute for an asbestos inspection, abatement plan, or professional regulatory guidance. Requirements vary by jurisdiction. Asbestos-containing materials should not be disturbed without appropriate assessment and controls.