Installation Floater Insurance: What It Covers and When Contractors Need It
By Justin MacKenzie | Contractor Insurance
The following is general guidance from an insurance perspective only. Coverage determinations depend on specific policy language, the facts of a claim, and applicable law. Consult a licensed insurance professional for guidance specific to your operations.
Key Takeaways
An installation floater is an inland marine policy that covers a contractor's materials and equipment from the moment they leave the supplier through installation and acceptance at the job site. Unlike builder's risk which is typically purchased by the project owner or GC to cover the entire project, an installation floater travels with the contractor from job to job and covers only their specific scope of work and materials.
The timeline gap between builder's risk and installation floater coverage is where losses happen. Builder's risk can be extended by endorsement to cover transit and off-site storage, but those endorsements frequently carry sublimits that may be inadequate for high-value specialty materials and conditions that do not apply cleanly in every loss scenario. An installation floater covers materials from the moment they leave the supplier regardless of those limitations. That gap is real and losses in that window are common.
Subcontractors cannot safely assume the project's builder's risk policy covers their materials. The policy may exclude their specific scope, the limits may not extend to their work, or the owner's carrier may pursue subrogation against the subcontractor after paying a covered loss. An installation floater protects the subcontractor's own interest independently.
Many contractors perform work on projects where no builder's risk policy exists. Smaller renovation projects, service work, and projects without an organized owner insurance program leave contractors without any project-level property coverage. The installation floater fills that gap.
An HVAC contractor delivered fifteen thousand dollars worth of equipment to a job site on a Friday afternoon. The equipment was staged in a ground floor storage area over the weekend. By Monday morning it was gone. Theft. The contractor called their agent and asked which policy covered the loss.
The builder's risk policy on the project covered materials incorporated into the structure. Equipment staged in temporary storage before installation was not clearly within that coverage. The contractor's commercial auto policy covered the truck, not the cargo. The general liability policy covered third party claims, not the contractor's own property. The contractor had no installation floater.
This scenario plays out regularly across every trade that supplies and installs materials. The installation floater is the coverage designed to fill exactly that gap, and it is one of the most commonly overlooked policies in a contractor's insurance program. This article explains what an installation floater covers, how it differs from builder's risk, when contractors need it, and how the two coverages work together on projects where both exist.
What Is an Installation Floater?
An installation floater is a type of inland marine insurance that covers a contractor's materials, equipment, and property while in transit to the job site, while in temporary storage before installation, and during the installation process itself. Coverage typically continues until the installed materials are tested, accepted, and turned over to the owner.
The installation floater is purchased by the contractor or subcontractor, not the project owner. It covers only that contractor's materials and equipment, not the entire project. An HVAC contractor's installation floater covers the ductwork, units, controls, and related materials they are responsible for installing. It does not cover the framing, the roofing, the electrical work, or anything else on the project.
This contractor-specific scope is what distinguishes the installation floater from builder's risk. Builder's risk is a project policy covering the entire structure and all materials intended for permanent incorporation into it. The installation floater is a contractor policy covering that contractor's specific piece of the project from origin through completion.
Installation floaters are most commonly carried by specialty trade contractors who supply and install their own materials: mechanical contractors, electrical contractors, plumbing contractors, HVAC contractors, roofing contractors, and similar trades. However general contractors and subcontractors in other categories including framing, drywall, and finish work also have installation floater exposure when they are supplying and installing materials on projects.
The Timeline Gap: Where Losses Actually Happen
The most important practical difference between builder's risk and an installation floater is the timeline of coverage. Understanding where each policy's coverage begins and ends explains why the gap between them is where losses most commonly occur.
Builder's risk coverage can be extended by endorsement to cover materials in transit and in off-site storage. However those endorsements frequently carry sublimits that may be inadequate for high-value specialty materials and conditions that do not apply cleanly in every loss scenario. Whether transit and off-site storage are meaningfully covered under a specific project's builder's risk policy requires reviewing the actual endorsements and their sublimits, not just assuming the coverage exists because the policy is in place.
An installation floater covers materials and equipment in temporary non-owned storage and at the job site. The installation floater is not tied to a specific job site and follows the contractor's materials from the moment they leave the shop or supplier through installation and acceptance. It does not cover materials while they remain at the contractor's own premises, which is where commercial property coverage applies.
The gap between those two coverage timelines is where losses happen. Materials stolen from a truck in transit. Equipment damaged at a staging yard before delivery. Materials stored at a jobsite destroyed by fire. All of these losses occur in the window between the supplier and the job site, where builder's risk may not apply and where the contractor has no protection without an installation floater.
For specialty contractors who deal in high-value materials such as custom HVAC systems, specialty electrical equipment, pre-fabricated mechanical assemblies, or precision components with long lead times, a loss in this window can be financially devastating. The cost is not just the replacement value of the materials. It is the delay cost, the re-ordering lead time, and the project schedule consequences that follow.
Why Subcontractors Cannot Rely on the Project's Builder's Risk Policy
One of the most common misconceptions in construction insurance is that subcontractors are fully protected by the project owner's builder's risk policy. This assumption is understandable but dangerous. Subcontractors who rely on the project builder's risk without understanding its actual terms are taking on coverage risk they may not be aware of.
Builder's risk policies are typically purchased by the project owner or general contractor and are structured around the owner's interests and the project as a whole. While many builder's risk policies do cover subcontractors as additional insureds for their work incorporated into the project, the scope of that coverage and its applicability to a subcontractor's specific situation is not guaranteed.
Scope limitations. The builder's risk policy may exclude certain types of work, certain materials, or certain phases of installation that fall within a specialty subcontractor's scope. A subcontractor whose work is excluded from the project builder's risk has no coverage under that policy regardless of their additional insured status.
Limit adequacy. Even when the builder's risk policy covers subcontractor materials, the limits available after a major loss may not be adequate to cover every subcontractor's claim simultaneously. A large fire that damages multiple trades' materials at once can exhaust policy limits before all subcontractors are made whole.
Subrogation rights. After paying a covered loss, the owner's builder's risk carrier may pursue subrogation against the subcontractor whose negligence contributed to the loss. A subcontractor who is covered as an additional insured under the builder's risk for their own materials loss may simultaneously be the target of a subrogation claim from that same carrier. An installation floater with its own coverage protects the subcontractor's independent interest.
Visibility. Subcontractors frequently do not have access to the project builder's risk policy. They may not know what it covers, what it excludes, what the limits are, or whether their specific work is included. Assuming coverage without reviewing the actual policy is not a risk management strategy.
The practical advice for subcontractors is straightforward. Do not assume the project's builder's risk policy covers your materials adequately. Carry an installation floater that protects your own interest independently. When both policies potentially apply to the same loss, the carriers work out contribution through their respective other insurance clauses. The outcome depends on how each policy is written but the result is generally better than having only one policy respond or having no coverage at all. Subcontractors are protected from subrogation only if they are explicitly named as an insured on the builder's risk policy or if the prime contract contains a waiver of subrogation. Without one of those protections a subcontractor who suffers a covered loss under the project builder's risk may find themselves the target of a recovery action from the same carrier that just paid their claim.
Not sure whether your program covers your materials from origin through installation?
Get a no-obligation review of your contractor insurance program. justin@fstwest.com
When No Builder's Risk Policy Exists
Not every project has a builder's risk policy in place. Smaller renovation projects, tenant improvement work, service and repair jobs, and projects where the owner has not arranged project-level insurance may have no builder's risk coverage at all. In these situations the installation floater is not a supplement to existing project coverage. It is the contractor's only property protection.
This scenario is more common than many contractors realize. A residential remodeling contractor replacing a kitchen. A mechanical contractor retrofitting equipment in an existing commercial building. An electrical contractor upgrading a panel and running new circuits. A plumbing contractor replumbing a multi-family property. None of these projects necessarily has a builder's risk policy in place, and the contractors performing the work may not think to ask.
Without an installation floater, the contractor's materials and equipment on these projects are essentially uninsured for property damage losses. The general liability policy covers third-party claims. The commercial auto policy covers the vehicle. The inland marine equipment floater covers the contractor's own tools and equipment. But the materials that have been purchased, delivered, and are staged for installation on the job have no specific coverage until they are on the contractor's inland marine schedule or covered by an installation floater.
For contractors who regularly perform work on projects without owner-arranged builder's risk coverage, the installation floater is not optional. It is the foundational property coverage for their work in progress.
How Installation Floaters and Builder's Risk Work Together
On larger projects where both a project builder's risk policy and subcontractor installation floaters are in place, the two coverages function as complementary layers rather than competing alternatives. Understanding how they coordinate helps contractors avoid both gaps and confusion when a loss occurs.
The builder's risk policy covers the project broadly. It protects the structure, the materials incorporated into it, and generally the interest of the owner, GC, and lender in the completed project. It is structured around the project timeline and terminates at substantial completion.
The installation floater covers the subcontractor's specific materials and interest. It attaches earlier in the timeline, covering materials before they arrive on site. It terminates when the installation is tested and accepted. The two policies protect different interests in the same materials during different phases of the construction process.
When both policies potentially apply to the same loss, the carriers work out contribution through their respective other insurance clauses. The outcome depends on how each policy is written. One policy may be primary and the other excess, or both may contribute. The specific result varies but having both policies in place is significantly better than having only one policy respond to a loss that exceeds its limits or having no coverage respond at all.
The practical guidance for contractors on projects with both types of coverage in place is to notify both carriers when a loss occurs and let the adjustment process work. Do not assume that the existence of a project builder's risk policy means your installation floater has nothing to contribute. The two coverages are designed to work together, and the installation floater may respond to aspects of the loss that the builder's risk does not cover.
What an Installation Floater Covers and What It Does Not
Installation floater coverage varies by policy and carrier, but the core coverage grant typically includes the following.
• Materials and equipment in transit from the supplier to the job site.
• Materials and equipment in temporary storage, including staging yards, warehouses, and off-site storage facilities.
• Materials and equipment staged on the job site before installation.
• Materials during the installation process itself.
• Coverage typically continues until the installed materials are tested, accepted, and turned over to the owner.
Common causes of loss covered include fire, theft, vandalism, weather damage, and accidental damage during handling and installation. The specific perils covered depend on whether the policy is written on a named perils or open perils basis.
What installation floaters typically do not cover includes the contractor's own tools and equipment that are not being installed as part of the project, third party property damage and bodily injury claims which belong on the general liability policy, and materials after they have been accepted by the owner and incorporated into the project which at that point belong under the builder's risk or the owner's property coverage.
The specific terms of any installation floater policy, including what property is covered, what causes of loss are included, and what exclusions apply, should be reviewed with your broker against the actual projects and materials involved in your work. Generic descriptions of what installation floaters cover are useful for understanding the product but the policy language governs what is actually protected.
Frequently Asked Questions
Does builder's risk cover materials in transit and off-site storage?
Builder's risk policies can be extended by endorsement to cover transit and off-site storage. However those endorsements frequently carry sublimits that may be inadequate for high-value specialty materials and conditions that do not apply cleanly in every loss scenario. Whether transit and off-site storage are meaningfully covered under a specific project's builder's risk policy requires reviewing the actual endorsements and their sublimits. Subcontractors who do not have access to the project builder's risk policy and cannot confirm what it covers and at what sublimit should carry an installation floater to protect their materials independently.
Do I need an installation floater if the GC has builder's risk on the project?
Possibly, yes. The GC's builder's risk policy may cover your materials as a subcontractor, but it may not, and you may not be able to confirm the coverage without reviewing the actual policy. Even when the builder's risk does cover subcontractor materials, an installation floater provides coverage during the transit and off-site storage phases that many builder's risk policies do not include. It also protects your independent interest in your materials separate from the project policy, which matters if the owner's carrier pursues subrogation or if the project policy limits are inadequate to cover all losses simultaneously.
What is the difference between an installation floater and inland marine coverage?
An installation floater is a type of inland marine insurance. Inland marine is a broad category of coverage that includes contractor's equipment floaters, tools and equipment coverage, motor truck cargo, and installation floaters among others. When contractors refer to their inland marine policy they are often referring to equipment and tools coverage. The installation floater is a distinct product within the inland marine category specifically designed to cover materials and equipment being installed as part of a construction project, as opposed to the contractor's own tools and equipment that travel from job to job.
Does builder's risk cover materials in transit and off-site storage, or do I need inland marine or installation floater coverage? What is the difference between builder's risk, installation floater, and inland marine?
This is one of the most common questions contractors ask and the answer requires understanding all three. Builder's risk covers the project broadly from groundbreaking through substantial completion, primarily protecting the structure and materials incorporated into it. It is typically purchased by the owner or GC and covers the project interest rather than any individual contractor's interest. Inland marine is a category of coverage that includes both contractor equipment floaters and installation floaters. An installation floater is the specific inland marine product that covers a contractor's materials from origin through installation, filling the gap that builder's risk may leave during transit, temporary storage, and the pre-installation phase. For contractors who supply and install materials, the installation floater is the coverage that specifically addresses the property exposure in those phases. Builder's risk and installation floater can and often do coexist on the same project, protecting different interests during overlapping phases.
How much does an installation floater cost?
Installation floater pricing depends on the value of materials being covered, the types of projects involved, the contractor's claims history, and the specific coverage terms. For most specialty trade contractors, an installation floater is a relatively modest premium relative to the value it protects. The cost of a single uninsured loss involving high-value specialty materials routinely exceeds the annual premium for installation floater coverage many times over. The best way to evaluate the cost is to discuss the specific nature of your work and materials with your broker and get an actual quote rather than relying on general estimates.
About the Author
Justin MacKenzie is a Commercial Lines Producer at First West Insurance, licensed in all 50 states, specializing in insurance programs for specialty contractors and construction businesses. Before moving into insurance, Justin spent over two decades in commercial real estate development and construction, working across more than a million square feet of projects with Fortune 500 companies, private equity firms, and national retailers, giving him a firsthand understanding of how construction contracts, subcontractor relationships, and risk transfer obligations actually work in practice. justin@fstwest.com
This article is for general informational purposes only and does not constitute professional insurance or legal advice. Coverage availability, terms, and conditions vary by insurer, jurisdiction, and individual risk characteristics. Consult a licensed insurance professional for guidance specific to your operations
