Short answer: The MEP trade is responsible for reporting every opening it makes, the firestop contractor for sealing it with a listed system and documenting it, and the general contractor for coordination and a complete log during construction. After turnover the owner maintains the rated construction. Exact duties depend on the contract, the locally adopted code and the AHJ.
Why is responsibility for penetrations so often unclear?
At least 3 parties touch every firestopped penetration: the MEP trade that cuts the opening, the firestop contractor that seals it and the general contractor that has to keep the overview. Because the work happens in separate steps by different companies, a penetration easily falls between the parties.
You know the situation: in week 12 the electrician pulls an extra cable through a wall that was sealed in week 9. Nobody reports it, the firestop crew has left and a month later the ceiling is closed. At the next inspection the rated wall is open again, and the discussion about who should have caught it begins.
What do building codes say about responsibility for penetrations?
Model codes set performance requirements rather than assigning work to trades. The International Building Code (IBC), as adopted locally, requires penetrations of rated walls and floors to be protected by approved, tested firestop systems, and the International Fire Code (IFC), where adopted, makes the owner maintain that construction. Who seals what is settled in the contract.
In certain buildings the 2021 IBC also requires special inspection of penetration firestops: high-rise buildings, buildings assigned to Risk Category III or IV, and fire areas containing Group R occupancies with an occupant load greater than 250. The owner or the owner's authorized agent, not the contractor, employs the special inspection agency, which keeps the inspection independent from the installer.
After turnover, the 2018 IFC requires the owner to keep an inventory of required fire-resistance-rated construction, inspect it yearly and repair it where it is breached. Editions and local amendments differ, so confirm with the Authority Having Jurisdiction (AHJ), as explained in What US building codes say.
Which party is responsible for what?
Per role, the split is fairly clear as long as you record it for each penetration. Problems start when nobody knows which penetration belongs to which party, for example because an opening was cut after the firestop contractor had finished, or because the details live in separate lists and email threads.
| Party | Responsible for | Typical risk |
|---|---|---|
| MEP trade or subcontractor | Cutting openings and reporting where they are | New opening after sealing goes unreported |
| Firestop contractor | Sealing with a listed system that fits the assembly, and documenting it | Sealing without photo or system details |
| General contractor | Coordinating, assigning and keeping the log complete | Overview scattered across lists and emails |
| Special inspector, where required | Inspecting installed firestops and reporting to the building official | Concealed work is hard to verify |
| Owner or facility manager | Maintaining rated construction after turnover, including renovations | Log is not updated after turnover |
| AHJ or building official | Plan review, inspection and enforcement | No quick proof available during an inspection |
Where does it go wrong in practice?
It almost always goes wrong at the handoffs between parties, not during the sealing itself. A firestop contractor can only seal what it knows about, and a general contractor can only check what someone recorded. When that handoff is missing, an opening in a rated wall stays unnoticed until the inspection.
- An MEP trade cuts an extra opening after the firestop contractor has finished.
- Penetrations are passed on by text or email, without a location on the drawing.
- Several firestop installers keep their own lists.
- A ceiling or shaft is closed before anyone has documented the firestop.
- During a renovation after turnover, maintenance staff do not know a log exists.
Industry practice can help here: FM 4991 approval and the UL Solutions Qualified Contractor Program audit a firestop contractor's quality management system, including documentation. Both are voluntary programs rather than code requirements, although a specification can require them.
How do you record who is responsible for each penetration?
Ed Controls, quality control and project collaboration software for construction, links each penetration as a ticket to a fixed location on the drawing and to fixed project roles. That way every penetration shows who does the work, who is accountable for the project and who needs to stay informed about progress.
| Role in Ed Controls | Usually | What the role does |
|---|---|---|
| Accountable | General contractor, 1 per project | Full rights, including project settings, tickets, audits and drawings |
| Support | Project engineer or firestop coordinator | Creates and assigns tickets and audits, without project settings |
| Responsible | Firestop contractor | Seals the opening, adds photo and product, sets the ticket to Completed |
| Consulted | MEP trade or fire protection engineer | Adds information and comments on the penetration |
| Informed | Owner or facility manager | Follows progress without taking action |
A ticket moves through Created, Started and Completed, and becomes Started once a Responsible is assigned, so you see which penetrations are still open and who has them.
How does this work in a building that is renovated every day?
At UMC Utrecht, one of the largest hospitals in the Netherlands, renovation never stops, so new penetrations appear every day. The hospital split the roles sharply: its trained in-house fire team seals small openings, while fire safety company HooVos handles large renovations and new construction and monitors the quality of the in-house team's work.
Both parties work in the same log in Ed Controls. Gerwin Hoogendoorn, head of HooVos: "I consider Ed Controls to be the most user-friendly compared with other systems." Jan Linnebank, project manager Safe Working Environment at UMC Utrecht: "To be honest, I don't know how we'd manage without Ed Controls." Read the full story in Managing fire safety.
Who is this approach for?
This approach suits projects where several companies create and seal penetrations, and buildings that stay in use during renovations. It helps less on small jobs where 1 company cuts, seals and documents everything itself, because there is no handoff between parties that needs to be recorded.
Suitable for:
- General contractors who coordinate MEP trades and firestop contractors
- Firestop contractors working for several clients
- Hospitals, universities and property managers that renovate often
Less suitable for:
- Small jobs where 1 company does everything and there is no handoff
Frequently asked questions
Is the MEP trade responsible for sealing its own penetrations?
That depends on the contract. Often the MEP trade cuts the opening and a specialized firestop contractor seals it with a listed system. Either way, the MEP trade should report every opening it makes, so the opening is sealed and logged before a ceiling or shaft is closed.
Who is responsible if a firestop is damaged after turnover?
After turnover the owner is generally responsible for maintaining fire-resistance-rated construction under the fire code adopted in the jurisdiction. The owner should make sure contractors who work in the building later restore damaged firestops, and that each repair is checked and recorded. Confirm the exact duty with the AHJ.
What does a special inspector do for firestopping?
In buildings where the adopted IBC requires it, such as high-rise buildings, a special inspector checks installed penetration firestops and reports to the building official. The owner employs the inspector, not the contractor. Photos, system numbers and locations for each penetration make concealed work much easier to verify.
How do you prevent a new penetration from going unreported?
Make reporting as easy as possible. When an MEP trade can create a ticket on the drawing right on site, with a photo of the opening, the penetration reaches the firestop contractor and the general contractor immediately, so nobody has to reconstruct it afterwards.
What does Accountable mean in Ed Controls?
In Ed Controls, the Accountable is the single project role with full rights, including project settings, tickets, audits and drawings. For firestopping that is usually the general contractor or the firestop company that manages the log, while the firestop installer works on individual tickets as Responsible and marks them Completed.
Read more
- Firestop log: what goes in it and who keeps it?
- Inspecting firestopped penetrations: a 7-point checklist
- Fire safety software from Ed Controls
Sources
- ICC, 2021 IBC section 1705.18
- ICC, 2018 IBC section 1704.2
- 2018 IFC section 701.6, Washington State WAC 51-54A-0701
- UL Solutions Qualified Contractor Program
- FCIA, FM 4991 Approval
- Ed Controls, roles
- Ed Controls, Managing fire safety
Last updated: 12 October 2026
