Technical guide: performance period
30, 60, 90 and 120-minute fire-resistance periods—specified, not assumed.
A required fire-resistance period is a design input. It does not, by itself, tell an applicator which product or coating thickness belongs on every steel member.
The period is established by the fire strategy and design.
UK projects commonly reference 30, 60, 90 or 120 minutes, but the correct requirement for a building or element must come from the responsible project design and applicable guidance.
Steel members do not all heat at the same rate.
Section geometry, exposure and design temperature influence the assessed coating build. An approved loading table or schedule translates the design inputs into member-specific requirements.
Application follows the issued schedule.
We plan coat passes and access around those member requirements. Where design information changes, the coating schedule should be revised by the responsible party before affected work proceeds.
Project planning sequence
How a fire-resistance coating scope is defined
Every project starts with its own issued information and workface conditions. This is the practical sequence used to define a coating scope before mobilisation.
Start with the fire strategy
Use the responsible design team’s required resistance period and project information as the starting point for the protected-steel scope.
Identify member-specific inputs
Consider the issued steel schedule, section geometry, exposure, limiting temperature and the selected tested product-system information.
Use the approved schedule
Translate the design inputs into the project’s issued member-specific requirements rather than treating one resistance period as a universal build.
Plan application around the schedule
Sequence access and coating work around the stated requirements, referring changes in design information back to the responsible project party.
Planned around the actual steel and access.
Our work is organised around the practical workface: steel geometry, access, protection measures and the specified coating route.
Questions before mobilisation
Project details, answered clearly.
Early answers on scope, access and sequencing help the work package move forward with fewer assumptions.
Ask another question01Can you quote a 60-minute system without steel sizes?
We can discuss access and budget context, but a firm application build requires the approved system information and steel schedule or equivalent member data.
02Can you confirm the required coating thickness from the fire rating alone?
No. The required build is system- and section-specific. We work from the approved product schedule, steel information, required resistance period and project specification.
03Can Premier Blasting provide both preparation and application?
Yes. Where the project requires it, one delivery team can complete abrasive preparation, compatible primer application, intumescent coating and the specified finish as one coordinated sequence.
Prepared. Applied. Coordinated.
Need a contractor to review the steelwork and scope?
Share the project information you already have. We will identify the next practical step.