FireproofingPlanning & estimates · Planning guide
A proposed fireproofing substitution needs more than a similar name
Build a clear change record when availability or programme pressures alter a proposal.
This guide helps you prepare a professional conversation. It does not specify a rated system, product thickness or installation method.
Make the reason for change explicit
UL Solutions’ firestopping design guidance discusses product substitution and the importance of a change-control strategy. For an owner, the first step is to ask why a change is proposed: availability, appearance, cost or a newly discovered site condition. Naming the reason helps the design team evaluate the actual trade-off without treating a supplier’s recommendation as an accepted design.
Request a side-by-side review package
Ask for the originally accepted proposal, the alternative, supporting documents and the affected locations. Have the contractor identify changes to sequencing, interfaces, finish, maintenance and closeout records. Route the package through the responsible professional review process. “Equal or better” is a claim to substantiate, not a decision an owner should make from a brochure.
Keep the decision attached to the work
Record who accepted the change, the revision date and any conditions before purchasing or affected installation proceeds. Update the scope, drawings and handover index so future managers are not left with documentation for the original product. Where acceptance is still pending, label it pending. This is an editorial procurement checklist, not a finding that products from different brands can be mixed or substituted. Technical suitability and the necessary authority decisions remain project-specific.
Distinguish commercial approval from technical approval
The owner may approve the commercial effect of a substitution while the technical review is still open. Record these as separate decisions, with the affected work held as directed by the project team. Ask the contractor to show whether accepting the change alters the schedule or other contractual scope. Once the technical resolution is accepted through the appropriate route, update both the purchasing record and the controlled construction documents. This avoids an email saying “cost approved” being misread later as permission to install a different life-safety system.
Primary sources & further reading
Published November 11, 2026 · Fireproofing.tv editorial desk