Inland Marine / Contractors

Installation Floater

By Jason Wootton · Edited by Justin Marks · Reviewed by Jason Wootton, NPN 7694718 Verify NPN ↗ · See disclosures ↓

Definition. An installation floater is inland marine coverage that protects a contractor's materials, fixtures, and equipment against loss or damage while in transit, in temporary storage, and until they are installed and accepted at the jobsite. It fills the property gap that begins when goods leave the supplier and ends when the project owner takes over.

Also known as: Installation Coverage, Installation Float

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An installation floater is an inland marine policy that covers property a contractor will install — items such as HVAC units, cabinetry, wiring, plumbing fixtures, boilers, or elevators — from the time the materials leave the supplier, through transit and any temporary storage, until they are permanently installed and accepted at the jobsite. Because the property is mobile and off the contractor's premises during this window, standard commercial property and auto policies leave a gap; the installation floater is designed specifically to close it.

This coverage matters to a contractor because the risk of loss on those materials sits with the installer until the work is complete and the owner takes over. If a truck carrying $80,000 of rooftop equipment crashes, or fire or theft strikes the staged materials the night before they go in, the contractor's general liability and commercial auto policies will not pay for the damaged property itself — they cover injuries and liability, not the contractor's own goods. The installation floater pays for the physical loss, typically against a broad set of perils including fire, theft, vandalism, and transit accidents, and coverage terminates once installation is finished and accepted.

A key practical nuance is how the installation floater relates to neighboring coverages. It overlaps with builders risk, which insures an entire structure under construction; on many projects a builders risk policy already covers materials once they are at the site, so contractors buy an installation floater chiefly when they supply and install specific systems rather than erect the whole building. It is also distinct from a tool floater, which covers the contractor's own tools rather than the materials being installed. Because the property is temporarily in the contractor's care, custody, and control, the floater is the correct place to insure it, and limits are usually set to the largest single installation job. Coverage ends the moment the work is installed, tested, and accepted, at which point the owner's permanent property insurance responds.

Real-world scenario

Meridian HVAC & Mechanical, LLC, a 14-person commercial mechanical contractor in Columbus, Ohio, wins a contract to supply and install eight rooftop HVAC units on a new medical office building. Each unit is worth $42,000, so at peak the crew has $336,000 of the general contractor's uninstalled equipment staged in a locked ground-floor room and on the roof. Because this is materials awaiting installation rather than the finished structure, it falls outside the building owner's builders risk policy, so Meridian buys an inland marine installation floater with a $500,000 per-job limit and a $1,000 deductible. The annual premium runs $3,150, roughly $0.63 per $100 of installed value.

Ten days into the job, a subcontractor's torch ignites protective packaging overnight and destroys three staged units plus copper line-sets and a rigging cradle. The replacement cost of the three units is $126,000, the damaged line-sets and duct total $18,500, and expedited freight to keep the schedule adds $4,200. Meridian files a claim for $148,700; after the $1,000 deductible, the floater pays $147,700. Debris removal, capped at a $25,000 sublimit, contributes another $6,800.

Had Meridian relied only on transit coverage or the GC's policy, the loss would have been uninsured, threatening the firm's $60,000 monthly cash flow. Instead, the single $3,150 premium protected a $154,500 exposure and preserved the relationship on a project worth $410,000 in total contract value.

How it affects your premium

Installation floater pricing turns on how much project value you carry at once, where it sits, and how long it is exposed before it becomes part of the completed structure. Underwriters weigh these drivers when setting your rate:

Maximum value at any one job site: The single largest concentration of uninstalled materials and equipment usually sets your per-location limit, and higher limits drive higher premium.
Type of installed property: Copper, HVAC units, elevators, and switchgear are theft- and damage-prone, so they cost more to insure than lumber or drywall.
Deductible selection: A higher deductible lowers premium but shifts small-loss risk back to the contractor.
Transit and temporary storage: Coverage for property in transit or at an off-site warehouse widens the exposure and the price.
Loss history and job-site security: Prior theft or fire claims, plus the presence of fencing, locked storage, and alarms, move the rate up or down.
Valuation basis: Insuring at replacement cost rather than actual cash value increases the premium but avoids depreciation haircuts at claim time.
Contract length and jobs per year: Longer installs and a reporting (annual) form covering many projects cost more than a single-project monoline floater.

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Common misconceptions

Myth: The building owner's builders risk policy already covers the materials I'm installing.

Reality: Builders risk typically covers the structure and materials once they belong to the project, but a contractor's own uninstalled equipment staged on site or in transit is often excluded until installation. An installation floater fills that gap so a fire or theft before the unit is set doesn't land on you.

Myth: My general liability policy will pay if the HVAC units I'm installing get stolen or burned.

Reality: General liability pays for damage you cause to others, not for physical loss to the property in your care. Direct damage to materials you're installing is a first-party inland marine exposure that only an installation floater or similar property form responds to.

Myth: An installation floater and a tool floater are the same thing.

Reality: A tool floater covers your own tools and equipment you use repeatedly; an installation floater covers the materials and fixtures being permanently installed into a customer's project until the job is accepted.

Frequently asked questions

What does an installation floater actually cover?

It covers physical loss or damage to the materials, fixtures, and equipment a contractor is installing into a project, typically from the time you take possession, through transit and on-site storage, until the work is installed and accepted. Covered perils usually include fire, theft, vandalism, and weather.

When does installation floater coverage end?

Coverage generally ends at the earliest of installation acceptance by the owner, the project owner taking over the property, or a set number of days after the materials are installed. After that point the finished property is meant to be covered by the owner's commercial property or builders risk policy.

Do I need an installation floater if the job already has builders risk?

Often yes, because builders risk may exclude a subcontractor's uninstalled materials or property in transit. Confirm whether you are a named insured or additional insured on the project policy before assuming you are protected.

How much does an installation floater cost?

Small contractors commonly pay a few hundred to a few thousand dollars a year depending on the maximum value per job, the type of materials, transit coverage, and deductible. Rates are usually quoted per $100 of installed value.

Can I cover materials while they are in transit or in temporary storage?

Yes. Most installation floaters can be endorsed to include property in transit and at a temporary off-site location, though limits and sublimits often apply. If most of your risk is on the road, ask about pairing it with dedicated transit coverage.

Sources cited

Installation Floater — International Risk Management Institute (IRMI) (2024)
NAIC Glossary of Insurance Terms — NAIC (2024)

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Disclosures

📘 Educational content only. Reviewed by licensed Property & Casualty insurance agent Jason Wootton (NPN 7694718). Not insurance advice, an individual recommendation, or a solicitation in any state. Insurance regulations vary by state. For specific coverage decisions, consult a licensed insurance agent in your state.

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