Asbestos siding was once a very popular choice for homes and commercial buildings because of its durability, fire resistance, and affordability. However, in recent decades, concerns about the health risks of asbestos exposure have made homeowners more cautious. If you own a property with asbestos siding or are considering purchasing one, it’s important to understand what asbestos siding is, its dangers, how to identify it, and the safest ways to handle or replace it.
What Is Asbestos Siding?
Asbestos siding is an exterior cladding material that was commonly used from the 1920s to the 1980s. It was typically manufactured by mixing Portland cement with asbestos fibers, creating strong and fire resistant panels. The siding was praised for its ability to withstand harsh weather, resist insects, and reduce the risk of house fires. Many older homes in the United States, especially those built before the 1980s, may still have asbestos siding.
Why Was Asbestos Siding Popular?
During its peak usage, asbestos siding was considered a “miracle material.” Its resistance to heat and flames made it safer than wood, while its strength meant homeowners did not need to worry about frequent repairs. Additionally, asbestos siding was inexpensive to produce, which made it affordable for a wide range of property owners. Unfortunately, the very same asbestos fibers that made it durable are now known to cause severe health problems.
Health Risks of Asbestos Siding
The major concern with asbestos siding is the risk of asbestos fibers becoming airborne. When asbestos siding is intact and undisturbed, it usually poses little to no immediate danger. However, once the siding cracks, crumbles, or is cut during renovations, the microscopic fibers can be released into the air. Inhalation of asbestos fibers is linked to serious diseases such as mesothelioma, asbestosis, and lung cancer. This is why professional asbestos removal and proper safety precautions are essential when dealing with asbestos siding.
How to Identify Asbestos Siding
Identifying asbestos siding can be tricky because it often looks similar to cement fiberboard or other non-asbestos siding products. Common signs include rigid, shingle-like panels, a smooth or slightly grooved surface, and brittle texture. However, the only way to confirm whether siding contains asbestos is through professional asbestos testing. Homeowners should never attempt to sand, drill, or break siding to check its composition, as this increases the risk of releasing harmful fibers.
What to Do If Your Home Has Asbestos Siding
If your house has asbestos siding, you have several options. In many cases, homeowners choose to leave the siding in place if it is undamaged. Covering the siding with new, non-asbestos materials is another common approach, known as encapsulation, which seals the asbestos and reduces exposure risks. Complete removal is also possible, but this should always be performed by licensed asbestos abatement professionals to ensure safety.
Cost of Asbestos Siding Removal
The cost of removing asbestos siding varies depending on the size of the property, the condition of the siding, and local regulations. On average, asbestos siding removal may cost between $8 to $15 per square foot, including disposal fees. While this can be a significant investment, it is often worth it for the peace of mind and long-term safety of your family. In some cases, homeowners may also qualify for government assistance or tax credits for asbestos abatement projects.
Asbestos Siding vs. Modern Alternatives
Today, homeowners have many safe alternatives to asbestos siding. Fiber cement siding, vinyl siding, wood siding, and engineered wood products are all popular replacements that provide the same durability without the health risks. Fiber cement siding, in particular, closely resembles the look of asbestos siding but is completely asbestos-free, making it a preferred option for renovations and home improvements.
Environmental Concerns with Asbestos Disposal
Another important factor to consider is the environmental impact of asbestos siding disposal. Asbestos is classified as hazardous waste, which means it cannot be disposed of with regular construction debris. Licensed asbestos abatement contractors ensure proper disposal at approved facilities, preventing contamination of soil, water, and air. This is why professional handling is not only a health necessity but also an environmental responsibility.
Should You Remove or Leave Asbestos Siding?
The decision to remove or keep asbestos siding depends on several factors, including the condition of the siding, future renovation plans, and your budget. If the siding is intact, leaving it undisturbed may be the safest and most cost-effective option. However, if you plan to remodel, replace windows, or install new insulation, asbestos siding may need to be removed to avoid accidental fiber release. Consulting with a certified asbestos inspector is always recommended before making a decision.
Conclusion
Asbestos siding is a relic of a time when asbestos was considered a safe and innovative material. While it provided durability and fire resistance, it also poses serious health risks if disturbed. Homeowners today should treat asbestos siding with caution, seek professional testing, and rely on licensed contractors for removal or encapsulation. By making informed decisions, you can protect your health, your family, and your property while upgrading to safer siding alternatives.
