Small Openings, Large Consequences
Firestopping restores the fire resistance of a rated wall or floor wherever a pipe, cable, duct, or joint interrupts it, but only when the installed detail matches a tested, listed system. Because it is installed by many trades and often concealed above ceilings, firestopping is one of the most frequently deficient conditions in rated construction.
Paul Gaston evaluates whether through-penetrations, membrane penetrations, and rated joints were firestopped to the applicable code and the listed system, for plaintiff and defense counsel in Chicago and Cook County.
What Goes Wrong With Firestopping
Penetration and joint failures usually fall into recognizable patterns:
- Penetrations left entirely unsealed
- The wrong material for the penetrant or barrier
- Incorrect annular space or fill depth
- Missing backing or incomplete coverage
- Rated joints and head-of-wall left untreated
- Field fixes that match no listed system
- Concealed conditions never inspected before closeout
Firestopping is easy to get wrong and easy to hide. That combination is why it turns up so often once someone finally looks above the ceiling.
Matching the Condition to a Listed System
A listed firestop system specifies the barrier, the penetrant, the material, the annular space, and the configuration. The review identifies the rating of the barrier and the penetration or joint condition, determines the listed system the configuration requires, and compares the installed detail to it.
Much of this work happens in the places people do not look, above ceilings, in shafts, and in mechanical spaces, where accessible and concealed conditions can be inspected and, where warranted, targeted openings made.
How Paul Gaston Helps Resolve the Dispute
Paul provides condition-by-condition analysis tied to listed systems and code, for plaintiff and defense. His work documents concealed and above-ceiling conditions with photographs and measurements, and compares each installed detail to the required listed system.
When a dispute turns on whether penetrations and joints were properly firestopped, that physical, system-referenced evidence supports a claim or a defense.
Frequently Asked Questions
Why is firestopping one of the most litigated concealed defects?
It is installed piecemeal by many trades, hidden above ceilings and in shafts, and governed by precise listed systems that are easy to deviate from. Deficiencies frequently survive closeout unnoticed and only surface later, which makes them a recurring subject of disputes.
Can firestopping defects be found without opening up finished walls?
Often yes. A great deal remains accessible above ceilings, in mechanical rooms, and in shafts, and those conditions can be inspected directly. Where necessary and authorized, targeted openings can be made to document concealed conditions.
How do you tell an approved firestop system from an improper field fix?
A compliant installation matches a listed system for that exact configuration, the correct material, annular space, depth, and backing. A field fix that uses the wrong material or leaves gaps does not match any listed system, and comparing the installed detail to the listing reveals the difference.