Overview
Sheet metal workers — skilled tradespeople who fabricate and install HVAC systems, ductwork, and metal structures — faced significant asbestos exposure throughout the 20th century. Working with insulated ductwork, near asbestos fireproofing, and in mechanical spaces filled with asbestos materials put sheet metal workers at elevated risk for mesothelioma.
Asbestos in Sheet Metal Work
| Product | Asbestos Content | Exposure Level |
|---|---|---|
| Duct insulation | 15–30% | High |
| Duct liner/lining | 10–25% | High |
| Vibration dampeners | Variable | Moderate |
| Fire stops/barriers | 15–40% | Moderate |
| Flexible connectors | Variable | Moderate |
How Sheet Metal Workers Were Exposed
HVAC Work
Sheet metal workers installed and maintained HVAC systems:
- Cutting and fitting ductwork insulated with asbestos
- Removing old ductwork with deteriorated insulation
- Working in air handler rooms filled with asbestos
- Installing diffusers and registers near asbestos ceiling tiles
Bystander Exposure
Sheet metal workers often worked in areas where other trades disturbed asbestos:
- Insulators applying spray insulation
- Pipefitters working on insulated pipes
- Demolition creating airborne asbestos dust
HVAC work frequently took place in confined mechanical spaces where asbestos fibers accumulated to high concentrations.
Industries Employing Sheet Metal Workers
- Commercial construction: Office buildings, retail
- Industrial facilities: Factory HVAC systems
- Shipyards: Ship ventilation systems
- Power plants: HVAC and ductwork
- Institutional: Schools, hospitals, government
Related Occupations
Sheet metal workers worked alongside:
- Insulators — Duct insulation
- Electricians — Building systems
- Pipefitters — Mechanical rooms
- Carpenters — Building construction
- Roofers — Rooftop HVAC
Health Consequences
Sheet metal workers with asbestos exposure are at risk for:
- Mesothelioma: Cancer of the chest or abdominal lining
- Asbestosis: Progressive lung scarring
- Lung cancer: Especially combined with smoking
- Pleural disease: Thickening of lung lining
Sheet metal workers today face asbestos exposure when working on older HVAC systems. Any building constructed before 1980 may have asbestos duct insulation.
Legal Options
Sheet metal workers diagnosed with mesothelioma may pursue:
Asbestos Trust Funds
Manufacturers of HVAC products containing asbestos have established compensation trusts.
Additional Claims
- Product liability lawsuits: Against duct insulation manufacturers
- Premises liability: Against building owners
- VA benefits: For military service exposure
- Workers’ compensation: Through employer coverage
An experienced attorney can help identify all potential sources of compensation based on your specific work history and product exposure.