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Construction & Trades
Insurance for the mould, asbestos and water that most contractor policies exclude.
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A restoration or remediation contractor in Canada needs commercial general liability plus contractors' pollution liability, because standard CGL largely excludes mould, asbestos and other pollutants. Firms that assess, test or write remediation protocols add professional liability. Add cover for clients' contents in your care and storage, an equipment floater for drying and air-scrubbing gear, and commercial auto. Workers' compensation is mandatory for most construction businesses in Ontario.
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Restoration and remediation contractors work in the materials standard policies are written to exclude. A general liability policy usually carries pollution and mould exclusions, so a firm that removes mould, asbestos or sewage needs contractors' pollution liability on top. Firms that test, assess or write protocols add professional liability, and pack-out work needs cover for clients' contents in your care.
We build programs that meet the requirements of the insurers, adjusters and property managers who send you work, and we compare the insurers on our panel on the wording that matters: pollution triggers, mould and asbestos sublimits, and professional services. See our construction and contractors guide for the wider sector view.
Restoration contractors arrive after something has already gone wrong: a burst pipe, a fire, a sewer backup, a flood. You work fast, in damaged and often occupied buildings, with clients' belongings in your hands and an insurer or adjuster watching the bill. Remediation adds the materials most liability policies are written to exclude: mould, asbestos, lead, sewage and other contaminants.
That combination is why a standard contractor policy falls short. The commercial general liability form most trades buy carries a pollution exclusion, and many carry a separate mould or fungi exclusion. For a remediation firm, those exclusions remove the core of the work. Restoration sits inside our wider construction and contractors program, but it needs its own wording. This guide explains how to build it.
A restoration program is CGL plus the lines that fill its gaps.
| Coverage | What it answers | Points to check |
|---|---|---|
| Commercial general liability (CGL) | Injury and property damage from your operations and completed work | Pollution and mould exclusions, care, custody or control limits |
| Contractors' pollution liability (CPL) | Spreading mould spores, asbestos fibres or sewage to clean areas, bodily injury from exposure | Mould, asbestos and lead named, occurrence or claims-made trigger, completed operations |
| Professional liability (E&O) | A moisture assessment, mould test or remediation protocol is alleged to be wrong | Covers testing and protocol writing, not just advice |
| Contents in your care and storage | Clients' belongings damaged or stolen during pack-out, cleaning or storage | Bailee or customers' goods cover with a limit to match your warehouse |
| Tools and equipment | Dehumidifiers, air movers, air scrubbers and moisture meters on job sites | Theft from sites and vehicles, rented equipment |
| Commercial auto | Response vehicles, box trucks and trailers | Contents being transported, after-hours use |
| Employer's liability | Injury suits that workers' compensation does not bar | Workers outside provincial coverage, out-of-province catastrophe work |
The scenarios below are hypothetical, but they reflect the losses underwriters ask about on restoration and remediation applications.
| Hypothetical scenario | Allegation | Policy that responds |
|---|---|---|
| Mould returns six months after a water job | Drying was incomplete and the remediation was inadequate | CPL for the mould damage; E&O if your moisture readings or protocol are blamed |
| Containment fails and dust spreads through an occupied home | Spread of contaminants to clean areas and illness | CPL; often excluded on a standard CGL |
| Workers disturb ceiling material later found to contain asbestos | Exposure of occupants and contamination of the building | CPL with asbestos cover; most CGL forms exclude it |
| Antique furniture damaged during cleaning at your facility | Damage to contents in your care | Bailee or customers' goods cover |
| Air mover cord trips a visitor | Bodily injury on the job site | CGL |
| Mould test misses contamination before a home sale | The report was wrong and the buyer lost money | E&O, if testing is covered |
Standard CGL policies exclude most bodily injury and property damage caused by pollutants, with narrow exceptions. Many add a separate exclusion for fungi, mould and bacteria. For a plumber or a roofer those exclusions rarely bite. For a remediation contractor, they describe the job. A program that relies on CGL alone, with that pollution exclusion intact, can leave a firm uninsured for the claim most likely to be made against it.
Contractors' pollution liability (CPL) fills that gap. It responds to pollution conditions caused by your operations at a job site, including spreading contamination you were hired to remove. The CCDC 41 insurance schedule used with CCDC contracts sets contractors' pollution liability at $5,000,000 per occurrence, which gives a sense of what commercial clients expect. When you compare CPL policies, check:
In Ontario, asbestos work on construction projects and in buildings is governed by O. Reg. 278/05. It sets out duties that affect how restoration jobs are scoped and insured. Other provinces have their own asbestos rules, so check with your provincial safety regulator.
| Rule | What the regulation says | Why it matters |
|---|---|---|
| Owner's report, s. 10 | Before requesting tenders or arranging demolition, alteration or repair, the owner must have material examined or treat it as asbestos, and give a report to prospective constructors | Ask for the report before you price the job |
| Discovery during work, ss. 9 and 10 | An employer whose workers find material that may contain asbestos must advise the owner; unreported material found during work triggers notice duties | Stop, notify and document; do not keep tearing out |
| Type 3 operations, s. 12 | Includes removing or disturbing more than one square metre of friable asbestos-containing material | Highest-hazard class; insurers ask about it directly |
| Notice, s. 11 | Before a Type 3 operation, the constructor or employer must notify a Ministry of Labour inspector orally and in writing | Missing notice is a compliance failure underwriters will see |
| Training, s. 20 | Workers and supervisors on Type 3 work must complete the approved Asbestos Abatement Worker or Supervisor Training Program | Keep proof for every worker |
| Clearance air testing, s. 18 | After Type 3 work in an enclosure, every PCM sample must not exceed 0.01 fibres per cubic centimetre | Clearance records are your evidence if a claim follows |
Ontario has no equivalent mould regulation that we have verified, so mould work is usually governed by industry guidelines, your contract and the insurer's or consultant's protocol. Ask the client or adjuster which standard applies and write it into the scope.
Water and fire jobs start at night and on weekends. Crews drive to the loss with a truck full of dehumidifiers, air movers, air scrubbers and generators, then leave that equipment running in a stranger's building for days. Equipment goes missing from vacant properties, gets damaged by the next leak, or is left behind when a job ends badly. An equipment floater covers it on site, in transit and in storage. Check the theft condition for unattended sites and vehicles, and schedule high-value units individually.
Many restoration losses begin with another trade's mistake. A failed fitting from a plumber or a leak through an open roof becomes your mitigation job, and later a subrogation file. Keep your moisture logs, photos and equipment records clean, because the insurer pursuing the trade that caused the loss may rely on them. If your own drying is later blamed for secondary damage, those same records are your defence. Our post WSIB is not enough covers the worker side of fast-moving emergency jobs.
Many restoration firms do more than clean. They take moisture readings, decide when a structure is dry, take mould or asbestos samples, and write the scope or protocol others follow. Those are professional services, and the CGL professional services exclusion usually removes them. If the drying log says dry and mould appears later, the allegation is that your judgment was wrong, not just your work.
Professional liability (E&O) covers that allegation. Some insurers write a combined contractors' pollution and professional policy for environmental contractors, which avoids gaps between the two. If you hire an independent consultant for testing or clearance, confirm they carry their own E&O and keep their reports on file.
A large share of restoration work comes through insurance claims. Insurers, independent adjusters, third-party administrators and property managers often run preferred vendor programs with their own insurance requirements: minimum limits, pollution cover, additional insured status and certificate deadlines. Those requirements vary by program and change over time, so ask each one for its current schedule rather than relying on what a competitor carries.
Our post on why every contract asks for a certificate of insurance covers additional insured and notice wording.
In Ontario, the WSIB says people who own or run a construction business, with or without employees, must have coverage, including independent operators and sole proprietors. A principal that hires a contractor for construction work must obtain a WSIB clearance certificate before the work begins. Restoration firms often subcontract rebuild work to demolition, drywall and renovation trades. Collect each sub's clearance and certificate before they start.
Contents are the other exposure that generic policies miss. Pack-outs move a household's belongings to your facility for cleaning and storage, sometimes for months. CGL usually excludes property in your care, custody or control. A bailee or customers' goods policy covers it, and its limit has to match the value in your warehouse at peak, not on an average day.
Restoration CGL is usually rated on revenue or payroll, with subcontracted rebuild work rated separately. Pollution and professional liability are rated on the services you offer and the revenue from each. Underwriters adjust for:
Marsh's Global Insurance Market Index put overall Canadian commercial rates down 6% in the third quarter of 2026. Pollution and professional markets follow their own cycles, so compare carefully and fix any mould or asbestos sublimits while terms are favourable.
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This page is general information, not insurance or legal advice. Coverage depends on your policy wording and the insurer. Speak with a licensed broker about your situation.
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