Materials In Transit – Coverage for Goods Moving Between Locations
Written by Justin Goodman, CIC, CRIS, CCIP, CEO and Co-Founder, Total CSR
Published: September 30, 2026 · Last reviewed: September 30, 2026
In plain language: Materials in transit covers lumber, pipe, equipment, or supplies while they travel from a store or warehouse to a job site. If a truck wrecks or a load falls off a trailer, this coverage helps pay to replace the damaged materials.
Technical definition: Materials in transit is an inland marine coverage, often added by endorsement to a contractor's or dealer's policy, that insures scheduled or unscheduled property against physical loss while in transit by owned, hired, or non-owned vehicles between specified locations, subject to a per-occurrence limit and named perils or special causes of loss.
Materials In Transit at a Glance
| Attribute | Detail |
|---|---|
| Also known as | Transit coverage, goods in transit, property in transit |
| Category | Inland marine coverage |
| Lines of business | Inland Marine, Commercial Property, Commercial Auto |
| Industries most affected | Construction, contractors, wholesale distribution, manufacturing |
| Related forms or endorsements | CM 70 11 (ISO Transportation Floater), carrier-specific contractors inland marine forms |
| Who bears the risk | The contractor, distributor, or supplier that owns or is responsible for the goods while in transit |
| Common solution | Add a materials in transit or transportation floater endorsement to an existing inland marine or contractors package policy |
| Also interacts with | Motor truck cargo insurance, builder's risk insurance, commercial auto physical damage, bailee coverage |
Key Takeaways
- Materials in transit insures building materials, tools, and supplies against damage or theft while they move between a supplier, shop, or warehouse and a job site.
- Agencies writing contractors and distributors need this coverage because standard commercial property policies and commercial auto policies typically exclude or limit cargo exposure while goods are moving.
- The most common pitfall is assuming commercial auto liability or physical damage coverage protects the cargo itself, when in fact cargo damage usually falls outside those coverage parts entirely.
- A quick win for agencies is to confirm the transit limit matches the largest single load value a contractor regularly hauls, not an average load, since one worst-case shipment drives the claim.
What Is Materials In Transit in Insurance?
Materials in transit is a form of inland marine insurance built to fill a gap left by property and auto policies. A commercial property policy generally covers goods at a fixed location named in the declarations. A commercial auto policy generally covers the vehicle and its liability exposure, not the cargo loaded inside or on top of it. Materials in transit exists specifically because property moves, and ownership of the loss exposure moves with it.
The doctrine behind this coverage traces to the historical "inland marine" category, which carriers created to extend ocean marine transit concepts to goods moving over land. A lumber yard shipping framing material to three job sites in one week faces a different risk profile than a retail store with inventory that sits still. The floater approach lets the policy follow the property rather than tie coverage to four walls.
Consider a roofing contractor that purchases a full truckload of shingles and underlayment from a supplier. The truck, owned by the contractor, is involved in a highway collision on the way to the job site, and the entire load is destroyed. Without materials in transit coverage, the contractor absorbs the full replacement cost of the shingles, the restocking delay, and the schedule slip, because neither the supplier's policy nor the contractor's auto policy was built to pay for damaged cargo.
Total CSR's training work with agency teams consistently surfaces one gap: CSRs often quote contractors equipment floaters correctly but forget that tools in transit and materials in transit are separate exposures requiring separate limits, since a single floater sublimit for "transit" can be quietly inadequate for both.
How Does Materials In Transit Work?
- The shipment. A contractor or distributor loads materials onto a vehicle for transport from a supplier, warehouse, or shop to a job site or other destination.
- The loss event. A covered cause of loss, such as a collision, overturn, fire, theft, or windstorm, damages or destroys the materials while in transit.
- The claim notice. The insured reports the loss to the carrier, documenting the vehicle, the route, the cargo manifest or invoice, and the circumstances of the damage.
- The valuation. The carrier adjusts the claim based on the policy's valuation method, typically replacement cost or actual cash value, subject to the per-occurrence transit limit and any deductible.
- The payment. The carrier pays the covered loss, minus the deductible, allowing the contractor to replace the materials and keep the project on schedule.
Real Claim Examples Involving Materials In Transit
Lumber load lost in a highway rollover
A framing contractor's flatbed truck rolled over on an interstate while hauling a full load of engineered lumber to a multi-family job site. The lumber was a total loss, and the truck required significant repair. The contractor's materials in transit endorsement paid for the lumber replacement up to the scheduled limit, while a separate commercial auto physical damage coverage handled the truck itself, showing how the two coverages work side by side rather than overlapping.
Theft of HVAC units from a job site staging area
A mechanical contractor staged several rooftop HVAC units near a loading dock overnight before final delivery to a commercial build-out. Thieves took two units before the morning crew arrived. Because the materials were still considered in transit under the policy's definition, which extended coverage to temporary storage incidental to the transit, the claim was covered under the materials in transit endorsement rather than denied as a property-at-a-fixed-location exposure.
Water damage to drywall during a delivery delay
A general contractor's drywall shipment sat on an open trailer during an unexpected overnight storm after a delivery delay pushed drop-off past business hours. The drywall absorbed water and became unusable. The carrier initially questioned whether weather exposure during a delay fell within the transit period, and the agency's documentation of the delivery schedule and bill of lading was what ultimately supported the claim payment.
Materials In Transit vs. Motor Truck Cargo Insurance: What Is the Difference?
Materials in transit and motor truck cargo insurance both cover property while it moves, but they serve different insureds and different legal relationships to the cargo. Materials in transit typically covers an owner's own goods moving to its own job sites, while motor truck cargo insurance covers a for-hire trucker's legal liability for cargo belonging to others.
| Comparison area | Materials In Transit | Motor Truck Cargo Insurance |
|---|---|---|
| Primary use case | Contractor or distributor moving its own materials to a job site or location | For-hire trucking operation hauling freight owned by customers |
| Coverage / concept type | First-party inland marine property coverage | Third-party legal liability coverage for cargo loss |
| Typical exclusions | Property not owned by or in care of the insured, mysterious disappearance without evidence of theft | Cargo not covered by a bill of lading, certain commodities excluded by class, inherent vice |
| Who is most affected by errors | Contractors and distributors who assume auto coverage protects their own materials | Trucking companies that underestimate cargo values or miscategorize freight classes |
| Common mistakes | Confusing transit coverage with equipment floater or property coverage | Writing cargo limits that do not match the MCS-90 financial responsibility requirements |
What Are the Most Common Mistakes With Materials In Transit?
- Agencies assume commercial auto physical damage coverage protects the load, when it only covers the vehicle, leaving cargo uninsured after a collision.
- Producers set a flat transit limit based on an average shipment rather than the largest single load, leaving a coverage gap on peak deliveries.
- CSRs fail to confirm whether the endorsement covers materials owned by the insured only, which excludes materials the contractor is holding for a customer or subcontractor.
- Agencies overlook the mysterious disappearance exclusion, which can deny a claim when materials go missing from a job site without clear evidence of forced entry or theft.
- Renewal reviews skip updating the schedule of vehicles and typical routes, so a newly added truck or a new regional supplier relationship goes unrecognized by the carrier.
- Agents quote materials in transit and a contractors equipment floater as if they are interchangeable, when tools and consumable materials often require distinct sublimits.
How to Explain Materials In Transit to a Client
Explaining Materials In Transit to a personal lines client
Materials in transit usually will not apply to a personal lines client, but if a client asks about moving valuable personal property, explain that their homeowners policy has its own off-premises coverage rules. Point out that business materials belong on a business policy, not a homeowners policy, if they are running any side work or a small trade business from home.
Explaining Materials In Transit to a small business owner
Materials in transit covers the lumber, pipe, or equipment while it is riding on the truck to the job site, not just the truck itself. Explain that without it, a wrecked delivery means paying out of pocket to replace the materials and still owing the supplier. Ask what the largest single load they haul is worth, so the limit on the policy actually matches their real exposure.
Explaining Materials In Transit to a CFO or risk manager
Materials in transit sits in the inland marine portfolio and should be reviewed alongside motor truck cargo and contractors equipment floaters to avoid overlapping or gapping limits. Recommend a schedule review tied to the largest shipment value on the books, not an average, since a single catastrophic loss drives claims experience. Suggest documenting bills of lading and delivery logs consistently, since claims involving timing disputes are resolved faster with clear transit records.
Frequently Asked Questions About Materials In Transit
Does materials in transit cover theft from a job site?
Materials in transit can cover theft from a job site if the materials are still considered within the transit period under the policy's definition, which often includes temporary staging before final placement. Coverage typically requires evidence of forced entry or a police report, since many policies exclude mysterious disappearance. Agencies should confirm how the specific carrier defines the end of transit before assuming staged materials are covered.
Is materials in transit the same as cargo insurance?
Materials in transit and cargo insurance both cover goods while moving, but materials in transit generally insures an owner's own property moving to its own destination, while cargo insurance, including motor truck cargo coverage, typically addresses a carrier's legal liability for goods belonging to others. A contractor hauling its own lumber needs materials in transit, not motor truck cargo coverage.
Does a commercial auto policy cover damaged cargo in an accident?
A commercial auto policy generally does not cover damaged cargo, since auto physical damage coverage applies to the vehicle itself and auto liability covers third-party injury or property damage, not the insured's own freight. Materials in transit or a similar inland marine floater is the coverage designed specifically to respond to cargo loss.
Can materials in transit cover materials owned by someone else?
Materials in transit can sometimes extend to property of others in the insured's care, custody, or control, but only if the policy specifically includes that extension. Agencies should verify this language carefully, since a standard form may limit coverage to property the insured actually owns, leaving a subcontractor's materials uninsured during transport.
What causes of loss does materials in transit typically cover?
Materials in transit usually covers named perils or special causes of loss such as collision, overturn, fire, theft, and windstorm, depending on the carrier's form. Special cause of loss forms provide broader protection than named perils forms, so agencies should compare the actual policy language rather than assume broad coverage applies.
Related Insurance Terms
- Inland Marine Insurance: A broad category of coverage for movable property, including materials in transit, contractors equipment, and property at temporary locations, built around the idea that coverage follows the property rather than a fixed address.
- Motor Truck Cargo Insurance: Coverage purchased by for-hire trucking operations for legal liability tied to cargo owned by others, distinct from materials in transit because it addresses liability rather than first-party ownership.
- Builder's Risk Insurance: Coverage for a structure under construction and materials intended for that structure once they reach the site, which picks up where materials in transit coverage typically ends.
- Contractors Equipment Floater: Coverage for tools and equipment a contractor owns or rents, often confused with materials in transit because both are inland marine floaters but covering different categories of property.
- Bailee Coverage: Coverage for property belonging to others while it is in an insured's care, custody, or control, relevant when materials in transit does not automatically extend to property owned by a customer or subcontractor.
- MCS-90 Endorsement: A federally required endorsement on motor carrier policies guaranteeing a minimum level of financial responsibility for cargo-related liability, separate from but often discussed alongside materials in transit and cargo coverage.
Sources and References
- IRMI. Inland Marine Insurance.
- IRMI. Motor Truck Cargo Insurance.
About the Author
Justin Goodman, CIC, CCIP, CISC, CLCS, CRIS, PCIA, QCLS, MFHR CEO and Co-Founder, Total CSR, Inc.
Justin Goodman is a third-generation insurance broker with over two decades in agency operations. He has trained more than 100,000 CSRs, account managers, and producers in commercial and personal lines coverage, from workers' compensation to construction risk. He was named 2024 Insurance Journal Agent of the Year and one of the nation's top five construction insurance experts by Risk & Insurance. He is the author of Retain, which applies cognitive science research on memory and knowledge transfer to insurance training, and speaks nationally on how agencies build durable technical expertise in their teams.