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ARMORTHANE PROTECTING YOUR WORLD

PROTECTING YOUR WORLD

ARMORTHANE PROTECTING YOUR WORLD

Spray Foam Rigs:
Trailers, Trucks
& What Goes Inside

What a spray foam rig is, trailer vs box truck, the proportioner, generator, compressor and hose that make it work, and how to spec a rig that also sprays polyurea.
Spray Rig Inquiries

Looking at a spray foam rig? Let us spec one with you.

Tell us what you plan to spray and where. Our team will walk you through rig options, training and startup.

  • Foam, polyurea or both
  • Trailer or truck preference
  • Where you will work
  • Timeline to start
Rather talk now? Call (417) 831-5090
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20 ft
Standard trailer; 24 ft and 26 ft also built
ArmorThane
45 kW
Generator on our standard 20 ft rig
ArmorThane build spec
23 CFM
Air compressor on our standard rig
ArmorThane build spec
100 ft
Heated hose on our standard rig
ArmorThane build spec

A spray foam rig is a self-contained mobile shop: a trailer or truck that carries everything needed to spray polyurethane foam or polyurea at a job site, including the proportioner, heated hose, generator, air supply and material drums. We design and build mobile coating rigs in Springfield, Missouri and run them on our own projects, so this guide explains what goes in a rig, how to size one, and what to ask before you buy.

Quick answer

A spray foam rig is an enclosed trailer or box truck fitted with a heated plural-component proportioner, heated hose, spray gun, generator, air compressor, air dryer, transfer pumps and drum storage. Most new contractors start with an enclosed trailer around 20 feet long; larger 24 to 26 foot gooseneck rigs carry more material and a second system. A well-specified rig can spray both spray foam insulation and polyurea coatings, which widens the work you can sell.

What's in this guide
  1. 1What is inside
  2. 2Trailer vs truck
  3. 3Foam and polyurea
  4. 4Buying checklist
  5. 5Starting a business
  6. 6FAQ
Start here

What is inside a spray foam rig

Heart

Proportioner

Heats and pumps the A and B components at a fixed ratio and pressure. Our standard rig uses a PMC PHX-40.

Power

Generator

Runs the proportioner heaters, hose heat, compressor and lights. 45 kW on our standard rig.

Air

Compressor and dryer

Supplies clean, dry air to the gun and transfer pumps. 23 CFM on our standard rig.

Delivery

Heated hose

Keeps material at temperature to the gun. 100 ft standard, extendable for large buildings.

Material

Drum storage and transfer pumps

Holds and feeds A and B drums, with heating to keep material in range in cold weather.

Safety

Fresh air and ventilation

Supplied-air respirator system, ventilation, fire extinguishers and spill kit.

Compare

Trailer vs truck spray foam rigs

FactorEnclosed trailerGooseneck trailerBox truck
Typical length16–20 ft24–26 ft16–26 ft box
Tow vehicleHeavy-duty pickupGooseneck-equipped heavy-duty pickupSelf-propelled
Material capacityModerateHighModerate to high
Second spray systemTightYesSometimes
FlexibilityDrop at site, use truck elsewhereDrop at siteTruck tied to rig
Best forNew contractors, residential and light commercialHigh-volume commercial, foam plus polyureaUrban jobs, crews who prefer one vehicle
Typical configurations. See our 20 ft, 24 ft and 26 ft gooseneck rigs.
More revenue

One rig for spray foam and polyurea

Spray foam and polyurea are both plural-component, heated, high-pressure materials. With the right proportioner, heated hose and gun setup, the same rig can insulate a building in the morning and spray a bedliner, roof coating or tank lining in the afternoon. That is why many of our rig buyers sell both. See polyurea spray rigs and our polyurea spray guide.

Field noteThe two upgrades that save the most headaches are a generator sized for full heat load in winter and a drum heating plan. Cold material is behind most bad spray days.
Buying

What to ask before you buy a rig

  1. What will you spray?

    Open-cell, closed-cell, roofing foam, polyurea or all of them. This sets the proportioner output and heat.

  2. How far from the rig?

    Hose length and heat capacity determine how far you can reach on large buildings.

  3. Generator sizing

    Confirm the generator covers proportioner, hose heat and compressor at full load.

  4. Climate

    Insulation, drum heat and heaters for cold-weather spraying.

  5. Training and support

    Who trains your crew, and who answers the phone when the rig is down?

  6. Service and parts

    Parts availability for the proportioner, gun and generator.

For startup costs see bedliner equipment cost and talk to us about building out a rig to your work.

Get started

Starting a spray foam business

A rig is the biggest piece of a spray foam or coatings startup, but not the only one: you also need training, insurance, a business plan and a way to win work. ArmorThane offers equipment, training and coatings with no franchise fee and no royalties. See our business opportunities.

Spray rigs

A rig built for the work you sell.

Talk to the ArmorThane team about a spray foam and polyurea rig, from a 20 ft enclosed trailer to a 26 ft gooseneck, with training included.

Get a free quoteFind an applicator

Contractors: become an ArmorThane applicator

FAQ

Spray foam rig questions

What is a spray foam rig?

A trailer or truck fitted with everything needed to spray polyurethane foam on site: a heated plural-component proportioner, heated hose, spray gun, generator, air compressor and drum storage.

What size trailer do I need for a spray foam rig?

Many contractors start with an enclosed trailer around 20 feet long. Larger 24 to 26 foot gooseneck trailers carry more material and can fit a second spray system.

Can a spray foam rig spray polyurea?

Yes, if the proportioner, hose and gun are set up for polyurea pressure and temperature. Many rigs spray both, which adds bedliner, roofing and lining work.

What generator size does a spray foam rig need?

It depends on the proportioner and hose heat. Our standard 20 ft rig uses a 45 kW generator to run the proportioner, heated hose and compressor at full load.

Do you provide training with a rig?

Yes. ArmorThane provides equipment and coatings training and ongoing technical support.

AT
Written by the ArmorThane technical team. We have manufactured polyurea, polyurethane and polyaspartic coatings, spray foam and plural-component spray equipment in Springfield, Missouri since 1989. Rig configurations and equipment brands can change; confirm the current build sheet with our team.

Sources

  1. Spray Polyurethane Foam Alliance, industry training and safety resources. sprayfoam.org
  2. American Chemistry Council, Center for the Polyurethanes Industry, SPF safety resources. americanchemistry.com
  3. OSHA, isocyanates safety guidance. osha.gov/isocyanates

latest news & bLOGS

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Your rig. Your business.

ArmorThane builds spray foam and polyurea rigs, trains crews, and supplies coatings, with no franchise fee and no royalties.

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