Installation Floater Policy: The Insurance for Materials Between Purchase and Installation
An installation floater is a specific type of inland marine insurance that covers materials and equipment a contractor owns during the gap between purchase and final installation. It covers property at the fabricator's shop, in transit to the project, at the project site before installation, and sometimes even during installation until the work is complete and the builder's risk policy takes over.
The coverage matters because neither the sub's regular property insurance nor the project's builder's risk policy fully covers the pre-installation state. The sub's property policy covers property at their shop but not during transit or at the job site. Builder's risk covers property at the job site but often doesn't cover off-site storage or shop-fabricated items until they're delivered. The installation floater fills the gap.
A typical installation floater policy provides coverage for:
Coverage scope of a typical installation floater
- Materials and equipment at the contractor's shop during fabrication
- Materials in transit between supplier, shop, and project site
- Materials at off-site storage locations prior to delivery
- Materials at the job site before installation is complete
- Sometimes, materials during installation until the work is accepted
Covered perils typically include fire, theft, vandalism, transit accidents, water damage, and similar property risks. Some policies cover broader perils (earthquake, flood) with additional premium; some narrow the coverage to named perils only. Reading the policy specifically is essential before relying on it.
Installation floaters are most important for specialty trades with significant shop fabrication or expensive equipment:
Trades that benefit from installation floater coverage
- HVAC contractors with major equipment (chillers, AHUs, RTUs) fabricated or stored before delivery
- Structural steel fabricators with high-value steel in the shop
- Curtain wall and glazing contractors with custom panels
- Mechanical contractors with large equipment
- Elevator contractors with cab assemblies and drive systems
- Specialty millwork and casework fabricators
- Data center and technology contractors with expensive equipment
For these trades, a chiller can be $400K, a steel package can be $2M, and a single curtain wall panel can be $15K. Damage during fabrication or transit can be a catastrophic loss if uninsured. A relatively modest installation floater premium (often in the range of $0.05-$0.25 per $100 of coverage, depending on risk factors) protects against that exposure.
Builder's risk insurance is typically purchased by the owner (or sometimes the GC) and covers the project as a whole — including property at the job site. But builder's risk coverage for off-site and in-transit property varies significantly:
Builder's risk coverage variations for off-site materials
- Some builder's risk policies include off-site coverage by default, up to a specified sublimit
- Some cover off-site storage but only at specifically named locations
- Some exclude off-site coverage entirely unless specifically endorsed
- Transit coverage varies — some include it, some require a separate endorsement, some exclude it
- Coverage typically stops at delivery and doesn't extend back to shop fabrication
For a specialty contractor whose work involves significant shop or off-site value, relying on builder's risk alone leaves potential gaps. The installation floater fills those gaps directly and doesn't rely on owner's policy terms.
Reading the builder's risk policy's specific off-site and transit provisions is worth the time. When the sub's installation floater and the builder's risk have overlapping coverage, the sub can potentially save by scaling back one; when there's a gap, the installation floater is the backstop.
Installation floater policies typically have:
Typical policy structure
- Per-occurrence limit — the maximum payable for a single loss event (often matched to the largest single item the contractor might have in transit or storage)
- Aggregate limit — the maximum payable across all claims in a policy period
- Per-location limit for off-site storage — sometimes separate from the main limits
- In-transit sublimit — a specific cap on transit coverage, which is typically lower than on-site coverage
- Deductible — often $1K-$10K per occurrence, depending on the contractor's size and risk profile
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The per-occurrence limit should be set high enough to cover the largest single shipment or single stored item the contractor might have. A steel fabricator routinely shipping $500K truckloads wants at least $500K transit coverage; an HVAC sub with a $600K chiller in their yard wants at least that much at-location coverage.
Installation floaters come in two structural forms: reporting policies and scheduled policies.
Reporting policies require the insured to report their monthly values to the insurer — the inventory at shop, the inventory in transit, the inventory at job sites. Premium is calculated based on the reported values, often with a deposit premium upfront and annual audit/true-up. This model fits contractors with fluctuating inventory levels.
Scheduled policies cover specific named items at specific values. Less flexible but simpler for a contractor whose large-value items are known and infrequent. For a sub whose major-value items are specific major pieces of equipment rather than fluctuating inventory, the scheduled model works well.
When a loss happens, the claim process involves documenting the damage, proving the value (supplier invoices, purchase orders, fabricator's cost sheets), and cooperating with the insurer's investigation. Transit claims require the bill of lading and delivery confirmation; shop claims require proof the item was at the shop; pre-installation site claims require proof of delivery.
Subrogation is common on installation floater claims. If a trucking company's negligence caused the loss, the insurer pays the sub and then pursues the trucker. If the damage was caused by another trade at the site, the insurer may pursue that trade's insurance. The sub's role is to support the subrogation action with documentation.
For a mid-sized specialty sub, an installation floater policy might cost $5K-$25K annually depending on values and risk factors. Against the exposure of a single $300K-$1M fabricated-but-not-installed loss, the premium is modest insurance.
Subs that don't carry installation floater coverage are betting their balance sheet on the hope that builder's risk covers everything and no loss happens during fabrication or transit. That bet usually works — and then fails catastrophically the one time it doesn't.
An installation floater policy covers materials and equipment during the gap between purchase and final installation — shop fabrication, storage, transit, and pre-installation at the job site. For specialty trades with significant fabricated or stored values, the coverage is essential insurance against losses that fall between the sub's regular property policy and the project's builder's risk. The premium is modest relative to the exposure, and the claims process is straightforward when the documentation is in place. Every specialty sub with meaningful off-site values should know whether they have this coverage and what it specifically covers.
Written by
Jordan Patel
Compliance & Legal
Former corporate counsel specializing in construction contracts and tax compliance. Writes about the documentation layer — COIs, W-8/W-9, certified payroll, notice-to-owner deadlines — and the legal backbone behind audit-ready AP.
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