Why Asbestos Inspections Matter
Yes, asbestos is a naturally occurring mineral, but just because it's natural doesn't mean it's safe. When asbestos-containing materials are in good condition, they pose minimal air quality issues. The danger comes when these materials become damaged, disturbed during renovation, or start "fraying around the edges"—that's when microscopic fibers become airborne and create serious health hazards.
Asbestos is incredibly versatile, which is why it was used in virtually every type of building material through the early 1990s. You'll find it in pipe insulation, floor tiles, ceiling textures, joint compound, roofing materials, siding, and even some electrical components. Federal laws began phasing out asbestos use in the US, and by 1991, most asbestos of significant concern was no longer being manufactured into building materials.
Note: Pre-1991 structures slated for demolition or extensive renovations require an Asbestos Building Inspection to remain in compliance with federal law—regardless of whether your local building department specifically requests one.
Our Asbestos Inspection Process
1. Systematic Investigation
Our certified AHERA Building Inspector performs a thorough walk-through of all accessible and assigned areas. We document the condition, accessibility, friability (crumbling potential), and air erosion of all materials. Suspected asbestos-containing materials are carefully touched to determine friability and grouped into homogeneous categories such as wallboard, pipe insulation, joint compound, ceiling texture, and more.
The number of samples collected depends on the amount and type of material encountered in your building.
2. Sample Collection Protocol
Each sample is collected following strict EPA guidelines:
- Wetting: The area to be sampled is first treated with a wetting agent to prevent possible release of dust and fibers into the atmosphere
- Collection: A representative portion of the material is carefully collected
- Containment: The sample is placed in a sealed plastic bag to prevent cross-contamination and fiber release
- Documentation: Each sample is labeled with name and location, then recorded on a bulk survey form
- Repair: The sampled area is sealed with encapsulant, joint compound, or duct tape as needed
- Decontamination: Sampling tools are wet-cleaned after each collection to prevent cross-contamination
- Disposal: All cleaning waste is disposed of in proper 6-mil asbestos waste bags
Note: Asbestos sample collection is invasive by nature—minor structural damage should be anticipated during the inspection process.
3. Required Sample Amounts
EPA regulations specify minimum sampling requirements based on material type and area:
Surfacing Materials (SM):
- 3 samples for each homogeneous area of 1,000 square feet or less
- 5 samples for each homogeneous area between 1,000 and 5,000 square feet
- 7 samples for each homogeneous area over 5,000 square feet
Thermal System Insulation (TSI):
- 3 samples for each homogeneous area, not assumed to contain asbestos
- 1 sample for each patched TSI area under 6 feet, not assumed to contain asbestos
Miscellaneous Materials:
- Sufficient samples from each homogeneous area of friable and non-friable suspected asbestos-containing materials to definitively determine the presence or absence of asbestos
4. Laboratory Analysis
All bulk samples are analyzed by EPA-accredited laboratories using:
- Polarized Light Microscopy (PLM) for most material types
- Transmission Electron Microscopy (TEM) for specific materials requiring more detailed analysis
Analysis methods are selected based on material type, condition, and regulatory requirements.
Demolition & Renovation Projects
NESHAP regulations apply to all pre-1991 structures undergoing demolition or renovation work. Just because your town doesn't specifically request an asbestos inspection during the permit application process doesn't mean you're exempt—it's a federal requirement that applies regardless of local enforcement.
Contractors and building owners face substantial federal penalties for proceeding with demolition or renovation work on pre-1991 structures without proper asbestos inspections.
"I've Been Building for 40 Years & Never..."
We hear this frequently. You'd be surprised how many environmental regulations exist on the books that haven't been consistently enforced at the local level. As municipalities face increasing environmental scrutiny and liability concerns, they're beginning to enforce rules that contractors building for decades may have never encountered.
The fact that a regulation wasn't enforced in the past doesn't mean it isn't required—or that it won't be enforced on your current project.
What Makes a Proper Asbestos Building Inspection
An Asbestos Building Inspection should only be performed by a certified AHERA Building Inspector. This certification ensures you receive a comprehensive report detailing all asbestos hazards in your building with proper documentation for regulatory compliance.
The inspection process for residential and commercial structures is more straightforward than you might think—schools have different and more stringent standards than non-educational buildings. Most homeowners and building owners find the process less disruptive than anticipated when working with experienced inspectors who understand how to minimize impact while meeting all federal requirements.
Where Asbestos Hides in Buildings
You'll be amazed at where asbestos can turn up. Its versatility led to use in nearly every construction application:
- Pipe insulation and boiler wrapping
- Vinyl floor tiles and sheet flooring
- Ceiling tiles and acoustic textures ("popcorn" ceilings)
- Joint compound and spackling materials
- Roofing shingles and felt
- Siding materials
- Electrical panel backing
- Furnace and oil burner components
- Ductwork insulation
- Window caulking and glazing compounds
Frequently Asked Questions
What People Are Saying About Us
Wondering If the Air In Your Home Is Healthy?
Planning a demolition or renovation project? Federal law requires asbestos inspections for pre-1991 structures. A call to GreenWorks (732) 223-2073 gets you the certified inspection you need to stay compliant and protect your project.