Contractors

Carpentry/Framing

Carpentry and framing contractors performing new construction, renovations, and restoration may face many environmental risk exposures. The use of chemicals, including adhesives, sealants, and lacquers, as well as chemicals found in treated or engineered wood products, create environmental risks. Mold and the accidental disturbance of pollutants, including asbestos and lead-based paint, generate exposures at jobsites. Carpenters may also incur pollution exposures in transporting and disposing of chemicals and jobsite hazardous waste.

Download PDF

Environmental Exposures May Include:

Exposed Wood
Improper Installation of Sheathing
Disturbing Hazardous Materials
Various Hazardous Materials
Transporting Hazardous Materials
Storage of Bulk Chemicals
Sawing, Planning, Drilling
Engineered Wood
Material Disposal
Subcontractors

Exposed Wood

Carpentry and framing contractors performing new construction, renovations, and restoration may face many environmental risk exposures. The use of chemicals, including adhesives, sealants, and lacquers, as well as chemicals found in treated or engineered wood products, create environmental risks. Mold and the accidental disturbance of pollutants, including asbestos and lead-based paint, generate exposures at jobsites. Carpenters may also incur pollution exposures in transporting and disposing of chemicals and jobsite hazardous waste.

Improper Installation of Sheathing

Improper installation or sealing of sheathing, window flashing, or other waterproofing could cause water intrusion, leading to subsequent mold or fungus issues. During work, damage to pipes, sewer lines, and HVAC systems could also cause water intrusion or releases of dust, pathogens, etc. Third-party and cleanup claims could result.

Disturbing Hazardous Materials

A carpenter’s scope of work may include repair and renovation in older buildings where asbestos, lead-based paint, and polychlorinated biphenyls may exist. Mold may also be present where water intrusion has occurred. Disturbing these materials may cause a release, leading to third-party bodily injury claims and remedial and disposal liabilities.

Various Hazardous Materials

Various hazardous materials may be brought to and stored at a jobsite. Carpenters may utilize chemical anchors instead of nails and conventional fasteners. Chemical coatings may be used on finished wood, including paints, lacquers, and stains. Solvents may be used to clean up or thin these materials. Spills, air emissions from fumes, and improper handling of these materials may lead to third-party or cleanup claims.

Transporting Hazardous Materials

Contractors face environmental exposures from transporting hazardous materials to and from jobsites. Spills or releases of chemicals, solvents, paints, lacquers, or hazardous jobsite waste, such as asbestos-containing materials or debris containing lead-based paint, can lead to cleanup liability or third-party claims.

Storage of Bulk Chemicals

Storage of bulk chemicals, fuels, or other hazardous materials at a contractor’s owned/leased facility can lead to environmental liability if a spill or release of these materials occurs. Storing flammable chemicals, treated lumber, or engineered wood also increases fire hazards. A fire can release toxic fumes, exposing third parties to potential harm.

Sawing, Planning, Drilling

Sawing, planning, drilling, and other abrasive manipulation of wood materials generate airborne particles, impairing air quality. Exposure to wood dust may cause respiratory symptoms, asthma, and other ill effects. High airborne dust concentrations can become explosive and lead to property damage and injuries to third parties. Structure fires release many toxic and asphyxiant gases, which can harm third parties.

Engineered Wood

Engineered wood and sheathing contain adhesives for binding wood fibers and maintaining structural properties. The glues and resins in these materials contain formaldehyde, isocyanates, and other toxic component chemicals. These chemicals can volatilize and accumulate in enclosed spaces, impacting the individuals’ health.

Material Disposal

Carpenters often dispose of material in jobsite dumpsters and may inadvertently dispose of hazardous materials, such as chemicals used on the jobsite, lead-based paint, asbestos-containing materials, etc. When an investigation for improper disposal occurs at a disposal facility, it can result in potential liability for all parties that manifested waste to the facility.

Subcontractors

Carpentry contractors may also be the lead project general contractor hiring several subcontractors for whom they are responsible. Actions of subcontractors and hazardous material exposure can become the liability of the project general contractor.

Contractors Pollution Liability Can Provide Coverage For

  • Contracting operations performed at a jobsite
  • Third-party claims for bodily injury and property damage
  • Third-party claims for cleanup
  • Defense of third-party claims
  • First-party emergency response costs
  • Non-owned disposal sites
  • Mold, legionella, bacteria, fungi
  • First and third-party transportation pollution liability
  • Loading and unloading
  • Sudden and accidental coverage for owned/leased locations
  • Natural resource damage
  • Lead and asbestos
  • Claims Scenarios & Examples

    A mother and her two sons began to feel sick after moving into their newly built home. They experienced nausea, headaches, and vomiting. Investigation revealed that the home had wet materials installed, and standing water was found in the home wall cavities and crawl space due to construction errors. Mold grew as a result and was the cause of the family’s illness. The family sued the carpentry and home-building companies, and the claim was settled for $500,000.
    After moving into their new home and later finding mold, a family alleged that it was due to moldy lumber used during construction. The mold growth in the lumber had occurred when the lumber was first cut and stored in the lumber yard. After construction, the mold grew and spread through the walls and floors of the home. The family claims the mold led to severe health issues for their young child. A lawsuit was filed against the carpenter and lumber company, resulting in a $22.6 million settlement.
    A carpentry contractor was working on a renovation project at a residential home built in the 1950s. The couple who owned the home continued to live there during the renovations, so the contractor used a plastic barrier to seal the parts of the house he was working in. The contractor removed paint from interior walls, window trim, and door jambs as part of the work. After the work was finished, the wife, who had been pregnant during the project, delivered her baby. After birth, the child tested positive for blood lead poisoning. It was determined that the paint had contained lead. The couple sued the contractor for bodily injury and loss of future wage potential, as the baby could have a lower IQ level due to the poisoning.
    A carpentry contractor was working on a residential building. The contractor removed the paint with a solvent and disposed of these materials improperly in an on-site dumpster. The waste collection company picked up the wastes for disposal, and the solvent leaked out, contaminating the soil in the dumpster area and burning two waste collection company workers.
    A contractor built a series of balconies at an apartment complex. Improper installation of waterproofing and ventilation components of the deck, along with the use of inferior materials, is alleged to have allowed water damage that resulted in wood rot and mold. Several of the residents became ill from the mold and sued the contractor. The balcony collapsed, causing several deaths and economic losses for the property management company. Multiple lawsuits were filed by the families of those killed and the property management company.
    A group of teachers filed a lawsuit against a contractor for the renovation work they performed at the school to install new ceilings, floors, and cabinets. The teachers claimed that after returning to the school, they noticed an odor and started having adverse health issues. According to the lawsuit, the odors were caused by off-gassing chemicals from the materials.
    The parents of a child diagnosed with cancer filed a claim against the carpenter who constructed their play structure. They alleged that their child had been exposed to arsenic, a carcinogen and a main ingredient in chromated copper arsenate (CCA), a wood treatment chemical. The carpenter used CCA-treated wood in the play structure.

    Final Consideration

    This environmental risk overview is intended to provide the reader with a broad range of potential risks they may encounter and may not reflect all of the risks associated with their business.

    Download PDF
    This environmental risk overview offers a general understanding of potential risks and may not reflect all risks associated with your business. Environmental Risk Professionals has compiled this overview for informational purposes only. This overview does not constitute legal opinion or advice, nor does it establish a consultant-client relationship. This overview is not intended to guide project parties in interpreting specific contracts or resolving disputes; such decisions may require consultation with counsel and depend on various factors. © 2025 Environmental Risk Professionals, LLC