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Build something real.

Spray foam insulation is a skilled trade with real demand. Plan your rig, training, chemistry and financing — then talk with people who outfit new applicators every week.

Build my startup plan Explore a rig
  • Rigs & equipment
  • Training
  • Financing options
Cutaway of a spray foam trailer rig A B

Generator

Powers the proportioner’s heaters and pumps. It has to be sized to the reactor’s full heat load, plus the compressor and lights.

Air compressor & dryer

Clean, dry air for the gun and the transfer pumps. Moisture is the enemy — wet air contaminates the ISO side and ruins foam.

Proportioner (reactor)

The heart of the rig. It meters the A and B sides at the right ratio, heats them and builds spray pressure. Most field problems start with ratio, heat or pressure here.

Heated hose

Keeps both sides at spray temperature all the way from the rig to the gun, so the foam reacts the same at the end of the hose as at the start.

A & B drums + transfer pumps

ISO (A side) and resin (B side) feed the proportioner. Store them in the manufacturer’s temperature range, keep the ISO dry, and mix the resin before you spray.

Spray gun

An impingement gun mixes the A and B sides at the tip. Clean mix, the right chamber size and a steady pass speed decide how the foam looks and performs.

Startup planner

Your spray foam business, mapped out.

Answer six quick questions. We’ll build your plan as you go — and connect you with someone who can price the rig and the training.

Step 1 of 6About 90 seconds
Where are you today?
What do you want to spray?

Many rigs do more than one — pick all that interest you.

What kind of setup are you picturing?
What budget are you working with?
When do you want to be spraying?
Who should we talk to?

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What it takes

The five pieces of a spray foam business.

Get these right and the rest is reps. The forum is full of applicators who learned them the hard way — so you don’t have to.

1

The rig

A proportioner sized to your work, heated hose, an impingement gun, a generator big enough for the heat load, clean dry air and transfer pumps — on a trailer or in a box truck.

2

Training

Ratio, heat, pressure, pass thickness, substrate temps and safety. Hands-on hours before your first paid job are what separate pros from callbacks.

3

Chemistry supply

A reliable source of open cell, closed cell, roofing foam and coatings — plus tech support when a batch misbehaves.

4

Insurance & licensing

General liability, equipment coverage and whatever your state and your customers require. Price it before you buy a rig.

5

Your first jobs

Bid with a real cost model, line up builders and insulation contractors, and get found locally. Use the bid calculator to price your first jobs.

Run the numbers

Price your first job before you buy the rig.

Our free bid calculator turns square feet and thickness into board feet, sets, drums, labor and a suggested bid — the math every new applicator should be able to do in the driveway.

Open the bid calculator

Do not cheap out on the machine. Buy quality equipment, learn it inside and out, and price every job off real costs.

Common advice from applicators in the forum’s “starting a spray foam business” threads Visit the forums