Post-tension cable and rebar strikes
Boring into a tensioned cable or heavy reinforcement can injure operators and compromise the structural integrity of a slab or beam.
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Core Drilling Contractor Insurance
When you wet-core through a floor, the water and slurry have to go somewhere. Liability and pollution terms need to reflect the rooms and equipment that may be below.
The Southern Agency can help you align your drilling operations with the necessary liability and pollution insurance.
Industry overview
You drill through concrete walls and slabs, sometimes above occupied rooms or near concealed services and tensioned reinforcement. A binding barrel can injure your operator, while water and slurry can reach ceilings, equipment or people on the floor below.
The Southern Agency can review your drilling, scanning, and reporting duties to help you select insurance. We can discuss resulting property damage and slurry-related liability, keeping correction of a misaligned opening as a separate cost.
Risks worth discussing
Concealed utility strikes
Cores can hit hidden electrical conduit, plumbing, or data lines inside walls and slabs, causing injury, outages, and damage.
Water and slurry intrusion below
Wet coring sends water and slurry through the hole, potentially damaging ceilings, finishes, and equipment on lower floors.
Operator entanglement and struck-by
High-torque core barrels can grab clothing or kick if they bind, exposing operators to serious injury.
Core rig and bit theft or damage
Diamond core rigs, barrels, and vacuum units are valuable, portable tools at risk of theft from sites and damage in transit.
Silica dust from dry coring
Dry drilling and prep release respirable crystalline silica, creating a health exposure for crews and occupants nearby.
Coverage worth discussing
Policies to ask about. Which ones fit depends on your operations, your contracts, and the carrier’s forms.
- General Liability InsuranceMay address covered resulting injury or property damage from drilling. Compare accepted structural duties and work-property terms; correcting a misplaced hole and repairing the host slab are separate questions from damage to surrounding property.
- Workers Compensation InsuranceMay provide benefits for employee injuries, including those related to torque or elevated work.
- Inland Marine InsuranceMay help protect core rigs and vacuum systems transported between job sites.
- Business Auto InsuranceMay cover vehicles used to transport equipment and crews to drilling jobs.
- Environmental Liability InsuranceMay address third-party injury or cleanup from silica or slurry, subject to specific contaminant-acceptance terms.
- Umbrella / Excess Liability InsuranceMay provide excess liability limits, though these do not supply excluded professional protection or penetration-correction coverage.
Situations to think through
These hypothetical examples are not agency claim results. Whether a loss is covered depends on the facts, policy terms, and applicable exclusions.
Hypothetical: Slurry damage to a floor below
Hypothetical: water and slurry reach an occupied office below and damage equipment and ceilings. GL may address covered resulting water damage; pollution terms may address covered liability or cleanup if the operation and contaminant are included. Review both responses. Collection costs and correcting the penetration do not automatically follow from the interior-damage claim.
Hypothetical: Post-tension cable struck
Hypothetical: a core severs a post-tension tendon. GL may address covered resulting injury or property damage if the operation and terms allow it. Preserve scanning, marking and authorization records. Separate tendon or host-slab repair from resulting harm to other property; ordinary drilling acceptance does not establish post-tension eligibility or payment for the structural repair itself.
Hypothetical: Operator hand injury
Hypothetical: a core barrel binds and injures the operator's hand. Workers' compensation may provide qualifying medical and wage benefits under applicable law. Identify the actual employer and duties; another firm's worker, the rig and the partly drilled slab involve separate liability and property questions.
Before you talk to an agent
Questions to raise
- Describe wet and dry coring, hole diameters and depths, overhead or elevated work, occupied buildings and structural sampling as performed.
- Identify who scans and approves penetrations and anchors, authorizes work near post-tensioning, and protects people and property below, including capture of the core.
- Review damage to the host slab or cable separately from resulting damage to other property and the cost to correct a misplaced penetration.
- Review water and slurry collection, paths to floors below, electronics, and tenant access. Ask about ordinary water damage and pollution provisions rather than assume all slurry belongs under one policy.
- Ask explicitly whether silica is accepted by the proposed pollution policy; employee respiratory injury and third-party contamination require different review.
- List rigs, barrels, stands, vacuums, and rented items, with peak site and transit values and overnight security.
What the agent conversation looks like
Start with the work you do and the questions your current policies leave unanswered. Carrier options depend on your location, risk, and underwriting. Explore our approach.
- ListenReview your operations, current coverage, and past claims.
- AssessIdentify potential hazards and discuss ways to reduce risk.
- BuildDiscuss policy and carrier options, premium costs, and audits.
- SupportReview changes and help you plan ahead as your needs develop.
Questions owners ask
What insurance does a core drilling contractor need?
Discuss liability for resulting harm, employee benefits, mobile core equipment, vehicles, actual pollution needs, and excess limits together. Describe methods, occupied and elevated work, post-tension duties and any sampling or reporting. Availability depends on actual operations, employers, contracts, and underwriting, not a standard package or automatic structural-work acceptance.
Am I covered if slurry damages a floor below?
GL may address covered resulting water damage to ceilings, finishes or equipment. Check the actual property affected, water and pollution terms and any separate contamination or cleanup allegation. Collection costs and correcting the penetration do not automatically follow, and a pollution policy does not assign every wet-coring incident to one response.
What if I core into a post-tension cable or utility?
Liability terms may address covered resulting injury, property damage or loss of use if actual structural and post-tension operations are included. Separate the cable or host slab being worked on, any other damaged property, misplaced-hole correction, and financial outage demands. Scanning or ordinary drilling acceptance does not establish every structural repair is insured.
Are my core rigs and barrels covered off-site?
Inland marine coverage may help protect mobile core equipment against theft and damage at sites and in transit, depending on scheduled limits.
Does dry coring create silica exposure?
Dry coring can release respirable silica. Review actual exposure periods, dust controls and employee benefits under applicable law separately from third-party injury or cleanup under GL and pollution terms. Ask explicitly whether silica and the operation are accepted; wet methods or a pollution policy do not eliminate the review or establish coverage.
Do general contractors require certain limits?
Many agreements request liability and excess limits and ongoing and completed-operations additional-insured rights. Compare actual requests with issued endorsements, accepted drilling and sampling duties, underlying schedules, attachment, and exclusions. A certificate or higher limit does not establish that every requested term is met or available.
Talk through your core drilling contractor coverage
Bring your questions, current policies, and relevant contracts. An agent can review coverage terms, exclusions, and the information carriers ask for, then explain the options available to you.