Polyurea Spray Equipment, Explained by the Numbers
Proportioners, guns, hoses and rigs, plus the startup, shutdown and troubleshooting routines that keep a polyurea crew spraying on ratio.
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Polyurea spray equipment guides: proportioners, impingement guns, heated hoses, mobile rigs, maintenance, isocyanate safety and job pricing calculators.
Proportioners
How plural-component machines meter, heat and pressurize material, and how to choose one.
ExploreGuns and Hoses
Impingement spray guns, mix chambers, heated hoses, whip hoses and transfer pumps.
ExploreRigs and Business
Mobile spray rig layout, power and air supply, startup budgets and job pricing.
ExploreMaintenance
Daily startup and shutdown, pump and gun care, and fixing off-ratio problems.
ExploreSafety
Isocyanate exposure, supplied-air respirators, PPE and the OSHA rules that apply.
ExploreFeatured guides
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Frequently asked questions
Can't find what you need? Ask the editors or browse the free tools.
What equipment do I need to spray polyurea?
A heated plural-component proportioner, heated hose with a whip hose, an impingement spray gun, transfer pumps for the drums, clean dry compressed air, a power source, and supplied-air respiratory protection. Most crews mount this in a trailer or box truck.
Why does polyurea need high pressure and heat?
Fast-set polyurea can gel in seconds, so the two components must mix inside the gun. Heat lowers viscosity and high pressure drives the streams together hard enough to mix thoroughly before the material leaves the tip.
How much does it cost to start spraying polyurea?
It varies widely. A new mid-size electric proportioner alone can run around $40,000, and new turnkey trailer rigs are listed well above $100,000. Used equipment lowers the entry cost but needs careful inspection.
What respirator do polyurea sprayers use?
NIOSH's recommendations for MDI, a common polyurea isocyanate, are built around supplied-air respirators. Sprayers typically wear supplied-air hoods or full-face respirators fed by Grade D breathing air, within a written respiratory protection program.
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