When Spray Foam May Need a Protective Covering
- Foam is combustible; required protective barriers depend on the assembly, product approval, occupancy and adopted code.
- Thermal barriers and ignition barriers serve different purposes, so ask which protection is required for the space.
- Ordinary paint is not automatically an approved protective coating; use only an approved system.
- Garages, pole barns and commercial spaces need project-specific review, not a blanket exemption.
- Changing how a space is used or occupied can affect permit routing in Michigan.
What Fire Protection Means for Your Project
Fire protection is assembly-specific. A product approval that works in one occupancy may not satisfy another use, substrate or finish.
If a garage, pole barn or commercial space is being converted, review the change of use before insulation. Permit routing may vary by enforcing agency.
Ask who will confirm the required covering and inspect it. A written scope should name the product and the approved protective system.
Do not assume an exposed foam surface is acceptable just because the space is not a living area. Review the actual occupancy with the local authority.
Questions About Fire Protection and Coverings
- What is the specific use and occupancy of the space being insulated?
- Which product is proposed, and what protection does its approval require?
- Is the covering a thermal barrier, ignition barrier or another approved system?
- Who confirms that the proposed covering matches the adopted code?
- Does the scope include the covering, or is it excluded as another trade?
- How will the installer document the approved product and covering?
- What is the next step if the space use is changing?
A FEW MORE ANSWERS
Questions before you get started
Can spray foam be left exposed?
It depends on the assembly, product approval, occupancy and adopted code. Foam is combustible, so confirm the required protection for the specific space before work.
Is paint an approved fire coating for spray foam?
Ordinary paint is not automatically an approved protective coating. Use a product and system approved for the assembly and occupancy, and verify it with the enforcing agency.
Do garages and pole barns need covered foam?
Garages, pole barns and commercial spaces need project-specific review. Do not assume an exemption, especially when the use or occupancy is changing.