Flame spread testing measures how far and how fast a flame travels across a material surface once ignited. There is no single universal method: five cover almost every regulatory requirement. This guide separates flame spread from ignitability and heat release, walks through the tunnel test, the Single Burning Item test, propagation latérale de la flamme, the radiant panel methods and small-flame ignitability, then shows how to choose a method by target market, which variables the laboratory controls, how to read each reported quantity, and the mistakes that invalidate results.

CEI 60695 is not one test but a family of fire hazard test methods, and the product standard rather than IEC 60695 decides which method applies and at what severity. This guide maps the series by ignition source, separates GWEPT from GWFI and GWIT, sets out what changed in the 2021 editions, explains why a V-0 datasheet is not compliance evidence for a finished assembly, and gives the sequence in which to run the tests and specify the equipment.

Fire resistance testing for steel structures produces a time rating for a protected member, not a property of the steel itself. That rating depends on the load ratio, the section factor, the protection type and the thickness applied, and it is extended to other sections by calculation in an assessment report. This guide sets out what an R 60 or R 90 rating actually describes, the three protection routes and the standard each one is assessed against, how a loaded furnace test is run, and the site changes that void a rating after it has been issued.

Testing the fire performance of building insulation is not a single test, and which test decides the result depends on the product. Mineral wool is settled by non-combustibility and calorific potential; EPS and PIR are settled by the SBI and the small-flame test; foil-faced boards are settled by their facings. This guide maps the four reaction-to-fire methods behind a Euroclass, the criteria that decide each class, and the three tests that sit outside the classification system, including ASTM E84 for North America and NFPA 285 for facade assemblies. It also covers pipe insulation's separate L classes, the specimen preparation errors that cause most retests, and the seven fields a test report must state before a class can be quoted in a tender.

Fire resistance and flame retardancy are two different properties, measured by two different families of tests, and one never implies the other. Fire resistance is a time-based rating of a loaded assembly inside a furnace, classified under EN 13501-2. Flame retardancy describes how a material responds to a defined ignition source, classified under EN 13501-1 or screened with UL 94. This guide sets the two side by side: which standards govern each, what a report line actually proves, how a steel column and a fire-resistant cable end up carrying both kinds of evidence, where flame-retardant claims break down in service, and the four questions to answer before writing a fire requirement.