Can You Install New Siding Over Asbestos in Michigan
If your home was built before the 1980s, there is a good chance the exterior siding could contain asbestos. Many homeowners in Southeast Michigan and cities like Royal Oak run into this issue when planning an exterior renovation. One of the most common questions we hear is simple: can you install new siding over asbestos?
The answer is yes in many cases, but there are important factors to understand before moving forward. This guide will walk you through what asbestos siding is, when it is safe to cover it, when removal is necessary, and what Michigan homeowners should know before starting a siding project.
What Is Asbestos Siding
Asbestos cement siding was widely used from the 1920s through the 1970s. It is durable, fire resistant, and holds up well against harsh weather, which is why it was popular in Michigan’s climate.
You will often recognize it as:
- Rigid shingles that look similar to slate
- A brittle material that can crack if mishandled
- Older siding found on homes in established neighborhoods like Royal Oak, Ferndale, and surrounding areas
While asbestos is not dangerous when left undisturbed, it becomes a health risk when fibers are released into the air through cutting, breaking, or sanding.
Can You Install New Siding Over Asbestos
Yes, in many cases you can install new siding over asbestos siding. This process is commonly referred to as a “siding overlay” or “encapsulation.”
Instead of removing the asbestos, contractors install a new layer of siding over top of it. This is often the preferred approach when the existing siding is in good condition.
When It Is Safe to Install Over Asbestos
Installing new siding over asbestos is typically acceptable when:
- The asbestos siding is intact and not crumbling
- There is no major structural damage underneath
- The wall sheathing is still solid
- Local building codes allow it
In Southeast Michigan, many municipalities allow this method as long as proper installation practices are followed.
Benefits of Installing Over Asbestos
For homeowners in Michigan, installing over asbestos siding offers several advantages.
Lower Cost
Removing asbestos requires specialized crews, safety procedures, and disposal methods. Overlaying siding avoids those costs.
Less Disruption
Removal can be messy and time consuming. Installing over existing siding is faster and less invasive.
Reduced Health Risk
By leaving asbestos undisturbed, you minimize the chance of releasing harmful fibers into the air.
Added Insulation Opportunity
Many contractors will install foam board insulation before the new siding, improving energy efficiency which is especially important during Michigan winters.
When Asbestos Siding Should Be Removed
There are situations where installing over asbestos is not the right option.
Severe Damage
If the siding is cracked, falling apart, or missing in large sections, it may not provide a stable base.
Moisture Problems
If there is water damage behind the siding, it needs to be addressed before new siding is installed.
Structural Issues
Rotting wood or compromised sheathing requires repair, which may involve partial or full removal.
Major Renovations
If you are changing window sizes, adding additions, or significantly altering the exterior, removal may be necessary.
Michigan Regulations and Considerations
In Michigan, asbestos is regulated to protect homeowners and workers. While homeowners can legally leave asbestos siding in place, removal must follow strict guidelines.
Key points include:
- Licensed professionals are typically required for asbestos removal
- Proper disposal at approved facilities is mandatory
- Disturbing asbestos without precautions can lead to fines and health risks
Local regulations can vary slightly between cities like Royal Oak and surrounding Southeast Michigan communities, so it is always a good idea to check with your contractor or municipality.
Best Siding Options to Install Over Asbestos
If you decide to install new siding over asbestos, choosing the right material matters.
Vinyl Siding
- Most common and cost effective option
- Lightweight and easy to install over existing siding
- Available in many colors and styles
Fiber Cement Siding
- Durable and long lasting
- Offers a high end appearance
- Heavier, so proper framing and fastening are critical
Engineered Wood Siding
- Provides a natural wood look
- More resistant to moisture than traditional wood
A professional contractor will typically install furring strips or a flat surface layer first to ensure the new siding is straight and secure.
Installation Process Overview
For homeowners in Southeast Michigan, the process usually looks like this:
- Inspection of existing asbestos siding
- Repair of any damaged areas
- Installation of a weather barrier if needed
- Adding insulation board or furring strips
- Installing the new siding system
Proper installation is key to avoiding moisture issues and ensuring a long lasting result.
Is It Worth Installing Over Asbestos
For many homes in Royal Oak and across Southeast Michigan, installing new siding over asbestos is a practical and cost effective solution. It allows homeowners to modernize their exterior without the expense and complexity of removal.
However, every home is different. The condition of the existing siding and the goals of your project will determine the best approach.
Final Thoughts
So, can you install new siding over asbestos? In most cases, yes. As long as the existing siding is in good condition and proper installation methods are used, it is a safe and effective option for many Michigan homeowners.
If you are planning a siding project in Southeast Michigan or Royal Oak, the best next step is to have a professional inspection. This ensures your home is a good candidate and helps you avoid costly issues down the road.