Spray Foam Equipment Insurance: Protecting Your Proportioner, Hoses, and Spray Rig

A spray foam rig is one of the most expensive and specialized pieces of equipment in the contractor world. A mid-range proportioning machine runs $60,000 to $120,000. Add a heated hose set ($10,000–$25,000), a spray gun and nozzles ($2,000–$5,000), transfer pumps, generators, and the truck or van that carries everything — and a single spray foam rig represents $100,000 to $200,000 in capital.

Most spray foam contractors insure that rig under their commercial auto policy and assume everything is covered. It's not.

Here's the gap, why it matters, and how to close it.

The Coverage Gap: Auto vs. Equipment

Commercial auto insurance covers the vehicle — the physical damage to the truck or van, and the liability if it's in an accident. It does not automatically cover the equipment mounted on or transported in the vehicle.

Your proportioner, spray gun, heated hoses, transfer pumps, and generators are not covered by commercial auto. They need inland marine or tools and equipment coverage to be insured against:

• Theft from a locked or unlocked vehicle
• Theft from a jobsite
• Physical damage from a traffic accident (the auto policy covers the vehicle; your equipment needs separate coverage to be included)
• Damage during transport — vibration, shifting loads, road shock
• Accidental damage on the jobsite — hose run over by a vehicle, gun dropped from height, foam gun fire

This gap catches spray foam contractors at the worst possible time: after an equipment theft or a traffic accident that destroys the rig, when they discover the check from the auto carrier doesn't include anything for the $80,000 proportioner in the back.

What Tools and Equipment Coverage Actually Covers

Tools and equipment coverage (sometimes called inland marine or contractor's equipment coverage) is designed specifically to fill the gap between auto and property insurance.

A spray foam tools policy typically covers:

Theft — proportioning machines stolen from vehicles parked at jobsites, from storage facilities, or from your yard are covered. Theft from locked vehicles is typically covered; some forms require the theft to be from a locked vehicle.

Accidental physical damage — a proportioner dropped while being unloaded, a spray gun damaged during setup, a hose set damaged by a forklift at the supply house. These are accidental damage claims, not auto claims.

Damage in transit — equipment damaged during transport that isn't caused by an auto accident. Road vibration that damages a proportioner's pump, shifting loads that crack equipment.

Jobsite damage — equipment on the jobsite that gets damaged by weather, other contractors' vehicles, or jobsite conditions.

Rented equipment — many policies can be endorsed to cover rented proportioners or equipment you temporarily borrow, under a care, custody, and control (CC&C) clause.

What's Typically Not Covered

Mechanical breakdown — if your proportioner fails due to a mechanical defect or normal wear, that's a maintenance issue, not an insured loss. Some equipment policies include breakdown coverage as an endorsement; most don't.

Consumables — spray nozzles, foam drums, chemical supplies, and other consumables aren't equipment for insurance purposes.

Your own negligent misuse — if you deliberately damage equipment or create a loss through gross negligence, that's typically excluded.

Equipment left unattended in open areas — some policies limit theft coverage to situations where the equipment was secured or the theft happened overnight. Read the unattended equipment language carefully.

How to Structure the Coverage

For a spray foam contractor, the cleanest equipment program coordinates:

1. Commercial auto — covers the vehicle itself. Liability for accidents, physical damage to the truck or van. The auto policy should be rated to reflect the weight and nature of the vehicle when loaded with a proportioner and chemical drums.

2. Inland marine / tools and equipment — covers the proportioner, spray guns, hoses, generators, and other equipment as a separate line. This is where the real equipment value lives.

3. Blanket vs. scheduled — you can schedule equipment individually (listing each piece with its value) or carry a blanket limit (a total coverage amount that applies across all covered equipment). For spray foam contractors with a full rig, a blanket limit of $75,000–$200,000 is typical. High-value items like proportioners may be better scheduled individually with agreed-value coverage.

Agreed value vs. actual cash value — actual cash value pays the depreciated value of equipment at the time of loss. A three-year-old proportioner that cost $100,000 new might have an ACV of $55,000 — leaving you $45,000 short of replacement cost. Agreed value coverage pays what you agree the equipment is worth at policy inception. For high-value proportioners, agreed value is worth the premium difference.

Equipment Valuation: Getting It Right

Under-valuing equipment is the most common mistake spray foam contractors make when setting up an inland marine policy. When you purchased your proportioner three years ago for $80,000, it seemed like a big number. Today, the replacement cost of a comparable machine might be $95,000 due to inflation and supply chain pricing.

If your policy insures the proportioner at $80,000 replacement cost and the actual replacement is $95,000, you'll either self-insure the difference or discover a coinsurance penalty at claim time (some policies reduce the payout if the insured amount is below a percentage of the actual value).

Update your equipment schedule annually or whenever you make a significant purchase. And consider an agreed-value endorsement for your most expensive piece of equipment — the proportioner.

Commercial Auto for Spray Rigs

When structuring your commercial auto for a foam rig, there are specific endorsements to consider:

Hired and non-owned auto — if employees ever drive personal vehicles for business purposes (picking up supplies, driving to a jobsite), hired and non-owned auto covers the liability exposure.

Loading and unloading coverage — the process of loading and unloading chemical drums, proportioners, and equipment creates liability exposure. Coverage should extend to the loading and unloading process, not just the vehicle in motion.

Equipment endorsement on the vehicle — some auto carriers will include a limited equipment schedule on the vehicle policy, covering permanently attached equipment like tool boxes or mounted compressors. However, a proportioner on a truck is typically not "permanently attached" and should still be covered separately.

Chemical transport — if you transport A-side and B-side chemicals in DOT-regulated quantities, the auto policy should reflect that and the carrier should be aware of it.

What to Do Today

1. Pull your commercial auto declarations page and confirm what the physical damage limit covers — it covers the vehicle, not the equipment.

1. List your equipment and estimate replacement cost: proportioner, spray guns, heated hoses, generators, transfer pumps, and ancillary spray tools.

1. Call your broker and ask specifically: "Is my proportioner covered if it's stolen from my truck?" If the answer isn't an immediate yes with a policy number, you have a gap.

1. Consider agreed value on your proportioner if it's worth more than $40,000.

1. Document equipment condition with photos and serial numbers — claims are faster and cleaner when you can prove what you had and what it was worth.

A $120,000 proportioner is your business's most critical tool. Making sure it's insured correctly is one of the simplest and most important things you can do.