Promat VERMICULUX® Rebated Edge Fire Protection System for Structural Steelwork Applications include: G Fire protection to structural G Fire protection upgrade of INTRODUCTION Promat VERMICULUX® is a lightweight non-combustible board specially designed to provide fire protection to structural steelwork. Up to 240 minutes fire resistance can be achieved depending on the thickness of material used, the dimensions of the beam or column being protected and the limiting temperature of the steel section. concrete floor slabs It is easy to work using normal woodworking tools and is supplied with two rebated edges to allow cross joints to be made without the need for noggings, cover strips or adhesives. Fixed by edge screwing boards together, Promat VERMICULUX® is fast and economic to install. DESCRIPTION Promat VERMICULUX® is a low density calcium silicate board containing vermiculite and reinforced with selected fibres and fillers. It is formulated without any inorganic fibres. Promat VERMICULUX® is moisture resistant and can be used in sheltered semi-exposed areas. Promat VERMICULUX® is off-white in colour with a sanded finish on both faces. It can be left undecorated or can be easily painted. It is resistant to moisture, will not disintegrate, warp or swell and can be installed at any time during the building programme, even before external walls have been completed and the building closed in. Moisture will not dissolve out soluble materials and the fire performance characteristics are not degraded by age or moisture. Untreated surfaces will absorb water and cause some loss of strength, which is fully recovered on drying. Promat VERMICULUX® is rigid and robust but edges and corners should be protected where impact damage may occur. Promat VERMICULUX® is supplied in the sizes shown in the table below. The boards are rebated on the same side along two opposite edges, to provide a 16mm wide half-lap which eliminates the need for noggings, cover strips or adhesives. The large range of thicknesses available allows selection of the most economic board to meet given periods of fire resistance. Nominal Sizes Thicknesses (mm) TYPICAL APPLICATIONS Promat VERMICULUX® is designed to provide fire protection to structural steelwork without the use of adhesives or the need to prime or clean the steel. Four sided protection to columns is achieved by forming a box around the column which is fixed by simply edge screwing the boards together. When casing a beam or column exposed on two or three sides, the Promat VERMICULUX® is fixed to steel angles. Full details of constructions and the thicknesses of Promat VERMICULUX® required to provide given periods of fire protection to particular structural sections are available from Promat UK Technical Services Department.

Promat VERMICULUX® Rebated Edge Fire Protection System for Structural Steelwork PERFORMANCE Fire Non-combustible to BS 476: Part 4 1970; Euroclass A1 in accordance with BS EN 13501: 1; A safety data sheet is available Class 1 surface spread of flame to BS 476: Part 7: 1987; Class 0 to the Building Regulations. from Promat Technical Services Promat VERMICULUX® can provide up to 240 minutes fire protection to structural steelwork depending on the thickness of material used and the A/V factor. This is calculated from the fire Department and, as with any other materials, should be read before working...