Where Asbestos Is Found in Older Homes: 10 Common Places

Knowing where asbestos is found can help owners of older homes avoid disturbing potentially hazardous building materials. Possible locations include attic insulation, pipe coverings, flooring, textured ceilings, wall compounds, roofing, siding, and heat-resistant materials around fireplaces.  Seeking out information to determine if and where asbestos could have been used is a smart move for homeowners so they can protect themselves (and contractors) before living and/or working in the home. So if you’re asking the question “Where is asbestos found?” this guide will help you understand where it potentially could exist in your home. 

Where is Asbestos Found?

If you’re a homeowner asking, “Where is asbestos found?” The answer is going to be in older homes. Because the material was phased out in the 1980s, asbestos use declined substantially, but homeowners should not rely on a single construction-date cutoff. The greatest concern is usually legacy material installed in older buildings or retained during renovation. However, older homes built pre-1980 may still have asbestos products, depending on whether they’ve been renovated—and when—because pre-1980 renovations could still have used asbestos. It’s always important to practice home renovation safety if asbestos exposure is a concern.

Why Was Asbestos Used in Older Homes?

Asbestos was a common building product in residential homes because of its durability, fire resistance, and insulating properties. It was relatively cheap to produce and purchase, which made it the top choice for decades. However, at the time, no one knew how deadly the product could be. After the hazards of asbestos became widely known, most contractors began phasing out the product, and asbestos removal became a common practice. 

Common Places to Look for Asbestos in Older Homes

If you’re looking at your old house and thinking, ok, where do I look? Where is asbestos found? There are some common places where asbestos was used that you can seek out. Keep in mind, you may need to consult a professional. An asbestos inspection will help you identify asbestos and whether it needs to be removed or encapsulated.

1. Attic Insulation

Asbestos inspections inside will often start at the top floor because attics are a very common area where asbestos was used. Because of its excellent fire-retardant and insulating properties, asbestos was used prolifically in home insulation. Many people seek attic conversions to add additional living space, so it’s especially important to see if that’s where asbestos is lurking in your home. 

2. Pipe Insulation and HVAC Ducts

Another hot spot for asbestos is insulation in pipes, HVAC, and ductwork. Older homes often used boiler systems, and many older heating systems and plumbing were asbestos-based. Where is asbestos found or where can you see it? Well, you’ll often be able to see it in what’s wrapped around the pipes. It may appear around the pipes as an off-white papery wrapping, corrugated or cardboard-looking wrap or covering. Over time, it can start to break down, appearing brittle or frayed, which could be especially dangerous.

3. Flooring

Vinyl flooring tiles and the adhesive mastic used to secure it, often found in kitchens, laundry rooms, and basements, frequently used asbestos. This is one of the most common locations for homeowners to encounter asbestos.

4. Ceiling Materials

You might have heard of popcorn ceilings, which were very popular from the 1950s through the 1970s. Unfortunately, to make the popcorn ceilings or textured coating, contractors often used asbestos. 

5. Wall Materials

Where is asbestos found? EVERYWHERE! It’s not just in the flooring you walk on and the ceiling overhead; asbestos was also commonly used in plaster, decorative wall coatings, joint compounds, and textured walls, which were in style in the decades before 1980. Additionally, the adhesive used to secure them often contained asbestos.

6. Fireplaces

If your older home has a fireplace, heat shields, fireproof panels, hearth backing, and flue insulation are all places where asbestos was used. 

7. Exterior Materials

Asbestos wasn’t only used inside. When looking at the exterior of an older home, where is asbestos found? Exteriors often used asbestos, from the roof to the siding and even window and door components.

1. Roofing materials

From shingles to felt and flashing, roofing materials are a hot spot for asbestos. 

2. Siding

From cement board siding to shaker-style siding and exterior wall panels, asbestos can be found on the siding of a home, as well as adhesive used to secure it.

3. Window and Door Components

While windows and doors are often wood and glass, components in the caulk, glazing putty, and other sealants used in window and door construction can contain asbestos.

Asbestos-containing material does not always have to be removed. Material that is intact and unlikely to be disturbed may sometimes be safely managed or encapsulated. Removal may be appropriate when material is damaged, deteriorating, or located where renovation will disturb it. A qualified professional should determine the appropriate response. 

Considering a Renovation With Asbestos? Protect Yourself

If you’re considering a renovation, you must protect yourself from potential asbestos exposure. Don’t drill, sand, scrape, or remove (or attempt to remove) materials that may contain asbestos. Additionally, because siding and its backing could contain asbestos, it’s best to also avoid pressure washing siding with suspected asbestos. 

If you have discovered disturbed suspected asbestos, leave it alone. It’s not worth the risk of trying to clean it up by sweeping or vacuuming. And of course, definitely don’t further disturb potential asbestos that is already deteriorating or falling apart. Asbestos exposure is tied to cancer, illness, and even death — so protect yourself by calling in the experts and leaving it alone.

How Asbestos Is Identified

While professionals may be able to spot suspected asbestos with the naked eye, it has limitations, as newer materials often look the same. To confirm the presence of asbestos, laboratory testing is needed.  If you’re considering a renovation that may disturb or damage older materials, whether big or small, you should have a professional asbestos survey. Sampling really should be left to trained professionals because it requires disturbing potential asbestos, which could have lifelong health implications.

Where is Asbestos Found in Your Home? Find out.

Many older homes used asbestos, and while some may be obvious to spot, others can be hidden or in unexpected locations. Homeowners should never disturb asbestos, and it’s always best to consult a professional and have any suspected asbestos tested before beginning any renovations in an older home. Contact Asbestos Project Management for a free asbestos removal estimate to find out if and where you could have asbestos in your home.

Frequently Asked Questions 

Q: Can you tell whether a material contains asbestos by looking at it?

A: No. Different asbestos-containing and asbestos-free products can look virtually identical. Laboratory testing is generally required for confirmation.

Q: Does asbestos always need to be removed?

A: No. Undamaged material that will not be disturbed may sometimes remain in place. A professional should evaluate its condition and location.

Q: Should I test an older home before remodeling?

A: Testing is advisable when renovation may disturb materials that could contain asbestos, such as flooring, insulation, ceiling texture, pipe wrap, siding, or wall compounds.