Roofing contractors hear both terms — installation floater and inland marine — and reasonably assume they're different products. The reality is more nuanced: an installation floater is a type of inland marine coverage, not a separate category. But the distinction between a contractors equipment floater (another inland marine product) and an installation floater matters enormously when you're trying to figure out which policy actually covers your $60,000 in TPO membrane sitting on a commercial roof overnight.
What an Installation Floater Covers
An installation floater specifically covers materials and equipment that you're installing as part of a construction project. The coverage period begins when you take possession of or responsibility for the materials and ends when the installation is complete and accepted by the property owner.
For a roofing contractor, this means coverage for:
- Roofing materials (shingles, membrane, insulation, underlayment) from the point of delivery or pickup
- Materials in transit from your supplier or warehouse to the jobsite
- Materials staged on the ground or rooftop awaiting installation
- Partially installed materials (membrane rolled out but not yet adhered or welded)
- Completed work that hasn't yet been accepted by the building owner
The critical feature of an installation floater is that it covers property that will become part of someone else's building. Once your shingles are nailed to the deck, they're technically becoming part of the structure — but until the project is accepted, they're your responsibility if something happens to them. Wind rips off freshly installed but unsecured membrane? Your installation floater responds.
Covered perils typically include fire, windstorm, hail, theft, vandalism, vehicle damage, and collapse. Water damage coverage varies by policy — some exclude it, others cover it with conditions. Weather-related damage to materials left exposed is sometimes subject to a "reasonable protection" requirement.
Limits structure: Installation floaters are typically written with a per-project limit (the maximum the policy pays for any single project) and an annual aggregate (total claims across all projects). A mid-size residential roofer might carry $50,000 per project / $200,000 aggregate. A commercial roofer might need $250,000-$500,000 per project.
What Inland Marine Covers (The Broader Category)
Inland marine is the insurance category — not a single policy. Under the inland marine umbrella, roofing contractors typically use two products:
1. Contractors Equipment Floater: Covers your owned tools and equipment — things you use to do the work but that don't become part of the finished project. Compressors, nail guns, generators, saws, ladders, safety equipment, vehicles (non-licensed), and specialty tools. These items stay yours after the job is done.
2. Installation Floater: Covers the materials you're installing — things that become part of the finished structure and transfer ownership to the building owner upon project acceptance.
When people say "inland marine coverage for roofers," they might mean either or both. A comprehensive inland marine program for a roofing contractor typically bundles both coverages, often on the same policy with separate limit structures for equipment and installation materials.
Some inland marine policies also include:
- Transit coverage: Specifically for goods while being transported, which overlaps with both the equipment floater (tools on your truck) and installation floater (materials being delivered)
- Temporary storage coverage: Materials at intermediate locations (your yard, a rented storage unit) between supplier and jobsite
- Leased/rented equipment: Coverage for equipment you rent — often cheaper than the rental company's insurance fee
Where They Overlap and Where They Don't
The overlap zone causes confusion because both products can potentially cover materials at a jobsite. Here's the clear distinction:
The installation floater covers:
- Shingles, membrane, metal panels → will become part of the building
- Underlayment, ice and water shield → will become part of the building
- Insulation board, adhesives, fasteners → will become part of the building
- Flashing, drip edge, ridge vent → will become part of the building
The contractors equipment floater covers:
- Nail guns, compressors → you take them to the next job
- Generators, saws → you take them to the next job
- Scaffolding, ladders → you take them to the next job
- Drone, infrared camera → you take them to the next job
The gray area: Some items don't fit cleanly. Temporary weather protection (tarps, temporary membrane) might be covered under either policy depending on how it's classified. Custom fabricated sheet metal sitting at your shop might be covered under your commercial property policy, your installation floater (if earmarked for a specific project), or neither if you haven't properly addressed it.
Which One a Roofing Contractor Should Carry
The short answer: most roofing contractors need both, and most carriers sell them together.
Equipment-only makes sense if: You only self-perform work using materials supplied by others (you're a labor-only subcontractor). You don't purchase, transport, or take responsibility for roofing materials — you just bring your tools and crew. In this case, a contractors equipment floater covers your exposure without needing an installation floater.
Installation-only makes sense if: You don't own significant equipment (unlikely for any roofing contractor with more than a year in business). In practice, this scenario doesn't really exist.
Both are needed when: You purchase materials, transport them, store them, and install them — which describes virtually every roofing contractor operating as a prime or GC. You need the installation floater for the materials and the equipment floater for the tools.
When obtaining quotes, ask for a combined inland marine policy that includes both contractors equipment coverage and installation coverage. This is standard practice and usually cheaper than purchasing them separately. Make sure the limits are adequate for both your maximum equipment value and your largest active project's materials value simultaneously.
Common Claim Scenarios
Theft from an unlocked jobsite (installation floater claim): A commercial roofer stages 120 squares of TPO membrane at a jobsite on Friday. Over the weekend, thieves take 40 squares valued at $18,000. This is a straightforward installation floater claim — materials in your care, custody, and control at a jobsite, lost to theft. Policy responds minus your deductible (typically $1,000-$2,500). Note: some policies require evidence of forced entry or security measures. Open jobsites with materials visible from the street are at higher risk, and some carriers impose higher deductibles or sublimits for jobsite theft without security measures.
Wind damage to staged shingle pallets (installation floater claim): A residential roofer has 15 pallets of architectural shingles delivered to a jobsite on Thursday for a Monday start. Saturday brings 60 mph straight-line winds that scatter and damage the shingles. Installation floater covers this — materials at the jobsite damaged by a covered peril. Your responsibility to mitigate might be questioned if weather was forecast, but typical wind events are clearly covered.
Trailer stolen with tools and materials (both policies respond): Your trailer contains $25,000 in tools and $8,000 in materials for tomorrow's job. It's stolen from the hotel parking lot. The equipment floater covers the $25,000 in tools. The installation floater covers the $8,000 in materials. One event, two coverage parts responding.
Compressor destroyed by falling debris (equipment floater claim): During a tear-off, a section of rotted decking falls and destroys your compressor below. The compressor is your equipment — the equipment floater covers it. The rotted decking is existing building condition — not your materials.
Matching Coverage to Your Operation
Review your actual workflow: how do you buy materials, where do you store them, how long are they at jobsites before installation, and what's the maximum value exposed at any single location? Then verify your inland marine limits cover that maximum exposure. Similarly, inventory your equipment — most contractors significantly underestimate their total equipment value until they actually list everything. A complete inland marine program with appropriate limits for both installation and equipment is typically $2,000-$8,000 annually for a mid-size roofing operation — a fraction of the GL premium and arguably more likely to generate a covered claim in any given year.