Boundaries matter
Plan exposure controls, fire protection, and local verification.
Safety and code answers depend on the exact product, installed assembly, jurisdiction, and work conditions.
Class A, Fireblock, Firestop, Ignition Barrier, and Thermal Barrier
Keep common spray foam fire terms separate and verify the exact product, tested assembly, installed thickness, covering, code edition, and jurisdiction.
Read the guideSpray Foam and Isocyanate Exposure: Know the Boundary
Understand why spray polyurethane foam application can create inhalation, skin, and eye exposure and why PPE is only one part of control.
Read the guideSpray Foam Ventilation, Re-Entry, and Re-Occupancy
Plan work-zone isolation, make-up air, outside exhaust, HVAC protection, continued ventilation, and product-specific re-entry decisions.
Read the guideWhen Not to DIY Spray Foam
Use clear stop conditions for wet materials, roof conversions, combustion equipment, occupied work, two-component systems, fire protection, and failures.
Read the guideA useful next step
Bring better questions to the conversation.
Use the contractor checklist to organize scope, documents, and questions for a qualified professional.