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Fire Performance of Sandwich Panels

Fire Performance of Sandwich Panels

Fire Performance of Sandwich Panels

The resistance of the material to fire, which is also expressed by its flammability capacity, is called fire performance.

  Fire resistance tests are carried out by small-scale modelling of the joint lines of the facade and roof panels, where the fire grows the most in the building. All standards and test methods related to the fire performance of sandwich panels have been specified in detail in TS EN 14509.

  Materials are classified into six different groups, starting from A1 to F. Other classes of the material are also determined according to the amount of smoke and dripping observed after a fire.

TS EN ISO 11925-2: Ignitability Tests (SFI): It is a fire test method that simulates the application of a lighter-sized fire source from the corner or surface of the sample for 15 or 30 seconds.
TS EN 13823: Reaction to fire tests (SBI): This test method determines the reaction of materials in classes A2, B, C and D to fire. On the other hand, classified is made as d0, d1, d2 according to whether there is dripping in the first 10 minutes and whether the dripping particles burn for more than 10 seconds. Classification is also made as s1, s2 and s3 according to the smoke produced over the first 10 minutes.
PUR/PIR: Correct chemical formulation offers advantages in terms of fire performance in plastic foams. High isocyanate ratios and flame retardant additives are decisive in the fire performance of polyurethanes.
XPS/EPS: Both expanded polystyrene (EPS) and Extruded polystyrene (XPS) are the plastic foams with the lowest fire resistance. It starts to melt and ignite to form flaming droplets at 100 °C.
ROCK WOOL: Rockwool materials in the inorganic material group are classified as non-combustible. Rock wool filled panels offer the best performance in fire-resistant facade, roof, and interior partition wall applications. The fire resistance of the rock wool filled sandwich panel varies between 30 and 120 minutes, depending on the rock wool type, thickness, and joint details.


Maximum Dimensional Stability Temperature  (⁰C) ~200 ~200 ~90-100 -
Ignition Temperature (⁰C) 285-310 415 245-345 -
Fire Performance Good Good Weak Very Good


Polyurethane Filled Sandwich Panels B.s2.d0