Berger Apexior No. 1 dries in approximately 6–8 hours between coats at 20°C. A final curing process is required for complete water and corrosion resistance, which is achieved by heating the coated surface with water at boiling temperature for several hours.
This two-stage drying and curing process ensures maximum protection and long-term durability under demanding boiler operating conditions.
Each litre of Apexior No. 1 provides coverage of approximately 8–10 square meters at 38 microns dry film thickness. Actual coverage may vary depending on surface preparation, profile, and application method.
For industrial projects, it is recommended to calculate paint requirements based on total internal surface area and desired number of coats for maximum efficiency and cost-effectiveness.
Berger Apexior No. 1 is a high-performance, anti-corrosive coating specifically formulated for the internal surfaces of boilers, including drums, tubes, water walls, economisers, and steam accumulators. This advanced protective coating prevents rust and corrosion under high-temperature and pressurized conditions, ensuring extended equipment life and reduced maintenance costs.
Unlike conventional paints, Apexior No. 1 is designed to cure with heat exposure, forming a tough, impermeable and insoluble film that provides lasting resistance against hot water and steam. It is widely used in power plants, industrial boilers, and steam systems where reliable internal protection is critical.
No separate primer is required for Berger Apexior No. 1. Apply one coat directly onto clean, dry steel using a brush, roller, or spray equipment. Ensure thorough coverage of corners, welds, bolts, and edges. After the first coat, allow 6–8 hours at 20°C before recoating.
Apply a total of three coats, allowing proper drying intervals between each. After the final coat, allow 12–16 hours for solvent evaporation. The coating at this stage will be dry but not yet fully cured. For complete curing and performance, the boiler or tank must be filled with water and heated above 100°C (212°F) for a minimum of 5 hours. This baking process transforms the paint into a durable, inert, and water-resistant protective layer.
