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CasasCápsula library · 2026-10-12

Modular fire safety what EI and reaction to fire actually establish

Published 2026-10-12 · Updated 2026-10-31 · Leer en español
Door and corridor in a facility. Illustration; no EI rating is established by the photograph.
Door and corridor in a facility. Illustration; no EI rating is established by the photograph. Hirho · CC BY-SA 4.0

Fire safety cannot be reduced to selecting mineral wool or PIR. The technical file must connect building use, protection design and product and assembly performance. For a manufacturer, documents that make the solution reproducible matter alongside the original test.

Two different questions

Reaction to fire describes a product’s behaviour in fire. Fire resistance concerns maintaining specified functions for a period. In common classifications, R denotes loadbearing capacity, E integrity and I insulation. An EI60 claim does not by itself establish R60 loadbearing performance of the frame.

DB SI is the Spanish reference. Conditions must be established for the project’s use, configuration and elements; all capsule homes cannot be assigned one universal requirement. A panel result also cannot automatically be transferred to a wall with different joints, openings and service penetrations.

Review the report’s scope

Our procurement recommendation is to identify manufacturer, system reference, build-up, fixings, dimensions and field of application. Changes to insulation, lining or assembly require checking whether the evidence remains valid. A laboratory name cannot replace reading its report.

Control site delivery

Insurance is a separate enquiry: the insurer must provide conditions and premiums for the actual project. We do not publish rejection rates or policy savings without identifiable evidence. This translated article retains its Spanish regulatory scope.

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Sources and scope

Sources reviewed 11 October 2026. Handover and control lists are CasasCápsula editorial recommendations; they do not replace project calculations, tests or documents.

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