Fire-Rated Wall Sandwich Panels: What the PIR Core Data Covers

Buyers often search for a fire-rated sandwich panel when a consultant, insurer or Civil Defense review asks for fire performance on a wall. That request can mean two very different things: how the material behaves when exposed to fire, or how long a complete wall keeps a fire on one side. A clear answer depends on knowing which one the project needs.

Jawdah's source data contains no dedicated fire-rated panel text. It states that the PIR core meets the DIN 4102 B2 fire classification and lists flammability as DIN 4102-1, Class B2. This page explains exactly what that covers, what it does not, and what to request from the Jawdah team when a wall must achieve a fire-resistance period.

Reaction to fire describes how a material contributes to a developing fire: whether it ignites easily, how flame spreads over it and how much it adds to the fire. Fire resistance describes how a complete element, such as a wall with its joints and fixings, keeps its stability, integrity and insulation when a fully developed fire acts on one side.

The two are tested with different methods and reported in different ways. A material class never converts into a fire-resistance duration, and a fire-resistance result for one tested assembly does not transfer to a different core, thickness, joint or fixing arrangement.

DIN 4102-1 is a German standard that classes building materials by reaction to fire. Classes A1 and A2 cover non-combustible materials, B1 covers materials of low flammability, B2 covers normally flammable materials and B3 covers highly flammable materials. A B2 class therefore tells you that the PIR core is a combustible material of normal flammability under that standard.

This is useful information for a fire engineer, but it is not a statement that the wall will contain a fire. In the wider market, panels intended for fire-resistance duties are usually built with non-combustible mineral wool cores and tested as complete assemblies; the Jawdah source does not list such a core.

The table lists every fire-related statement in the Jawdah sandwich panel data and its scope. Both entries refer to the polyisocyanurate (PIR) insulation core material, not to the finished wall.

Write the requirement precisely. State whether the specification asks for a reaction-to-fire class of materials, a fire-resistance period of the wall, or both, and name the test standard required by the fire strategy or the Saudi Building Code and Civil Defense review. A vague line such as fire-rated panels leads to submittals that cannot be approved.

Where only a reaction-to-fire class of the insulation is asked for, compare it with the DIN 4102 B2 data and ask Jawdah for the Tests. Where a fire-resistance period is required, ask Jawdah in writing whether a tested wall assembly is available for that duty, and do not assume that the standard PIR Wall Sandwich Panels meet it.

Jawdah lists a Sandwich Panel Technical Data Sheet, a System Catalogue, an Installation Manual in hard copy and Tests in hard copy. For any fire submittal, review the Tests to confirm what was tested, on which material, by which method, and with what result, and keep that scope in the submittal wording.

These are the misunderstandings that most often stall approvals on panel projects.

Use the path below to decide whether the standard Jawdah PIR wall panel answers the requirement or whether item data must be requested first. Related needs, such as Cold Room Wall Sandwich Panel projects, follow the same logic when insurers raise fire questions.