Protherm Light Ultrafast: fire protection preliminary sizing

Free Edilteco calculator to estimate the thickness of Protherm Light, a pre-mixed, lightweight, thermal insulating fire protection plaster, on steel profiles and plates, reinforced concrete beams, columns, slabs and walls, and profiled steel decking. The result appears instantly and can be downloaded as a numbered PDF report.

How it works

  1. Enter the elements one by one or upload a list: PDFs (including scanned ones), photos, Word, Excel, CSV or text.
  2. For each element choose the type, the required data (profile, plate dimensions or axis distance d of the reinforcement) and the fire resistance in minutes.
  3. The Protherm Light thickness appears instantly. By entering the site, the requester and an email you download the numbered PDF report, which is also emailed to you with the technical data sheet and the Declaration of Performance.

Elements that can be sized

Steel profile
Steel: critical temperature assumed at 600 °C; exposure and protection following the profile contour on 4 sides (4L). A/V taken from the catalogue. The actual critical temperature must be verified by the designer: 600 °C is not conservative in every situation. No extension beyond the tabulated range.
Steel plate
Plates: critical temperature assumed at 600 °C; solid rectangular section protected on 4 sides. A/V = 2000 × (width + thickness) / (width × thickness), with dimensions in mm. Joints, bolts, welds, base plates and heat exchange with connected elements are excluded from the automatic check. The actual critical temperature and the applicability of the assessment to the detail must be verified.
Reinforced concrete beam / column
Reinforced concrete beams/columns: critical temperature of the reinforcement assumed at 600 °C; d is the distance from the surface to the axis of the reinforcement, not just the net concrete cover. If positive, the tabulated thickness is rounded up for application to the next multiple of 5 mm, with a minimum of 10 mm. Section, exposure, load, reinforcement and table conditions must be verified. Prestressed elements and pre-tensioned reinforcement require a specific assessment.
Reinforced concrete slab / wall
Reinforced concrete slabs/walls: critical temperature of the reinforcement assumed at 600 °C; d is the distance from the surface to the axis of the reinforcement, not just the net concrete cover. If positive, the tabulated thickness is rounded up for application to the next multiple of 5 mm, with a minimum of 10 mm. Section, exposure, load, reinforcement and table conditions must be verified. The thermal check of the reinforcement does not by itself demonstrate the E and I requirements. Prestressing is excluded from the automatic assessment.
Profiled steel decking
Profiled steel decking / steel-concrete composite slab: tabulated package R01, R30 = 10 mm, R60 = 10 mm, R90 = 16 mm, R120 = 22 mm. No further data are required in this mode. Before use, the slab must be checked against the field of application in Annex 4 of the ETA; the result does not extend to an isolated steel sheet or to every roof.
Generic floor slab
Generic floor slabs: preliminary package defined for this mode, 30 min = 10 mm, 60 min = 15 mm, 90 min = 20 mm, 120 min = 25 mm, on the soffit to be protected. It is neither a result of the R02 engine nor a certified performance of the floor. Type, build-up, geometry, reinforcement, loads, restraints, exposure and R/E/I requirements must be analysed. Timber, prestressing, mixed floors and degraded, combustible or discontinuous substrates require a specific study.
Generic wall
Generic walls: preliminary package defined for this mode, 30 min = 10 mm, 60 min = 15 mm, 90 min = 20 mm, 120 min = 25 mm. The thickness applies per treated face; the number of faces and the application surface are to be defined in the assessment. It is neither a result of the R02 tables nor an EI/REI classification. Material, build-up, height, thickness, load-bearing function, restraints, joints, penetrations and exposed faces must be analysed. Lightweight, combustible or unidentifiable walls require a specific assessment.

Preset assumptions: steel 600 °C · 4 sides; RC reinforcement 600 °C. Target duration, not a certified class.

Generic floor slabs and walls: 30 / 60 / 90 / 120 min → 10 / 15 / 20 / 25 mm. The R, EI or REI performance of the structure must be verified by the appointed professional.

Preliminary proposal. Preliminary sizing for a technical proposal and quotation. The assumptions adopted and the suitability of the system must be verified on the specific structure; the document does not certify a fire resistance class.

Protherm Light at a glance

  • Pre-mixed, lightweight, thermal insulating plaster for the fire protection of structural elements in steel, normal and prestressed reinforced concrete and brick; made of virgin EPS beads, hydraulic binders and special additives; white or grey.
  • European Technical Assessment ETA 18-1111 (tests to EN 13381-1, -3, -4 and -5): concrete, steel, composite slabs with profiled steel sheet and concrete, horizontal membrane.
  • Reaction to fire A1 (EN 13501-1); fire resistance from R30 to R240 according to Declaration of Performance ED_PL 11/2022.
  • Dry density approx. 300 kg/m³; thermal conductivity λD 0.079 W/mK; consumption approx. 3.0 kg/m² per 1 cm of thickness; 18 kg bags.
  • Mechanical application with a plastering machine, in one or more coats, indoors and outdoors.

Official documents

Contacts

Commercial offer and applicators: export@edilteco.it
Technical support and certification: diego.cecchinato@edilteco.it, export@edilteco.it

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