A complete technical guide to achieving mandatory European fire resistance (REI 30 to REI 120) and airtight, thermal bridge-free insulation in steel building construction.
Compliance with European fire safety directives (EN 13501) and building energy efficiency regulations requires a coordinated engineering approach to structural fire protection and thermal envelope design. While raw structural steel is Euroclass A1 non-combustible, its load-bearing capacity decreases above 550°C. SerBuild integrates certified fireproofing solutions—including intumescent paint coatings (R30/R60/R90), Promatect encasements, and non-combustible stone wool core sandwich panels (REI 60 to REI 120)—paired with high-performance PIR insulation to achieve Passivhaus-level U-values (<0.14 W/m²K) with zero thermal bridges.
In European fire engineering, structural fire resistance is measured across three performance criteria: R (Structural Load-Bearing Capacity), E (Integrity against flame and gas passage), and I (Thermal Insulation against heat transfer).
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Réponses détaillées sur l'ingénierie Eurocode, la fabrication, l'exportation et le montage.
We utilize non-combustible stone wool (mineral fiber) core sandwich panels (100mm to 150mm thickness) or double-layer fire-rated Promatect / Type X gypsum boards mounted over cold-formed steel framing, certified per EN 13501-2.
Intumescent paint is a specialized coating applied to exposed structural steel columns and rafters. Under fire exposure (>200°C), it swells up to 50 times its original thickness into a thick carbon foam char that insulates the steel from critical heat failure for 30, 60, or 90 minutes.
Thermal bridging is eliminated by applying continuous external rigid insulation (ETICS with PIR, graphite EPS, or stone wool boards) on the exterior of the steel studs, combined with thermal break isolation tape behind cladding fixings.
Yes. Modern PIR (polyisocyanurate) sandwich panels achieve Euroclass B-s1,d0 fire classification with self-extinguishing properties, low smoke emission (s1), and zero flaming droplets (d0).
Exterior walls achieve U = 0.12 to 0.22 W/m²K depending on panel thickness (80mm–150mm), and insulated roofs achieve U = 0.11 to 0.18 W/m²K, easily surpassing strict EU energy efficiency directives.
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