Passive fire protection systems in building

Passive fire protection for structural steel elements for the required firebreak feature (R 30, R 60, R 90, R 120, etc.), according to fire prevention standards. Our company employs intumescent, water-based or solvent-based paints with experimental tests performed according to reactive fire protection systems to the fire resistance of structural steel members EN 13381-8. Fire design is carried out in accordance with EN 1993-1-2- Eurocode 3 “Design of steel structures – General rules – Structural fire design.” The thickness of intumescent paint in order to ensure the required fire resistance is determined according to the mass factor (S/V) and the critical temperature assumed. Fire retardant paints are applied with airless sprayers by high-qualified personnel with suitable experience.

Coating systems are made for fire protection of wooden structures and to reduce the fire reaction of wood or wood-derived products. The paint guarantees fire resistance according to European standard ENV 13381-7 and European fire reaction Class B-s1-d0. SDF VERNICIATURE provides protection of wooden structures in schools, school gyms and public buildings in general. Usually in a wooden roof the structure is treated for fire resistance, the non-load bearing board for fire reaction.

Reactive paints expand by increasing their original thickness upon exposure to heat, thus creating a protective barrier for structures. Intumescent coatings are designed for airless spraying to provide the required firebreak feature depending on fire prevention standards. The fire protection system consists of the following steps: surface preparation, base coat application either via a roller, a brush, or an airless spray, intumescent paint and, where necessary, top coat.

Passive protection of structural elements made of steel, reinforced concrete, corrugated metal or hollow core floor with fire-resistant plaster, usually gypsum-based, with perlite and other special aggregates. Fire-resistant plaster is generally used for structures that do not remain exposed or where there are no special aesthetic requirements. The thickness of the fire-resistant plaster for steel and reinforced concrete structures is determined according to the required fire resistance, critical temperature, section factor for steel, and existing cover for reinforced concrete. The plaster thickness depends on the fire resistance and substrate characteristics. Fire-resistant plaster is applied using plastering machines. In particular structures, such as steel trusses, insulating plaster is applied on flat rib lath. To measure the thickness of the fire-resistant plaster to apply, a mat depth gauge is used.

Fire protection of ordinary and prestressed reinforced concrete beams, columns, floors and walls with intumescent paint or insulating plaster.

Treatment of existing floors, such as brick floors, hollow core and corrugated metal floors, double tees, and brick ceilings to ensure strength, tightness, and insulation (firebreak features). Painting of non-load-bearing walls, such as brick walls, lightweight concrete block walls and gypsum board walls to ensure tightness and insulation.

Construction of walls, wall linings, ceilings and cladding with calcium silicate or gypsum plasterboard slabs.

The protective coating is applied by monitoring the environmental conditions (before, during and after the coating application), with suitable measuring instruments such as a dew point digital thermo-hygrometer to detect air temperature, humidity and dew point digital contact thermometer to monitor the steel substrate. The measuring instruments used to measure paint thickness are: a wet film comb to check wet paint thickness and a coating thickness gauge to detect dry paint thickness.