Architectural & Industrial

Architectural & Industrial Powder Coating

Rainbow Powder Coating specializes in architectural and industrial-grade finishes that combine aesthetics with durability. Powder coating is the process of applying a dry polymer powder using electrostatic charge and then curing it under heat to form a tough, uniform, and long-lasting finish—far stronger than conventional liquid paints.

Our Process

1. Surface Preparation

   Every part is carefully prepared through chemical or mechanical cleaning to remove dirt, grease, oils, old finishes, and oxidation. Proper preparation is essential for adhesion and durability. At Rainbow, we adapt the method based on the substrate:

   • Ferrous / Steel items – phosphate pretreatment followed by oven drying

   • Aluminium - etching, degreasing, and chromate conversion for optimal bonding

2. Powder Application

   Using an electrostatic spray gun, the powder is positively charged while the grounded part attracts it. This ensures excellent coverage, reduced overspray, and minimal waste compared to traditional painting methods.

3. Curing

   Coated parts are baked in ovens at 200–210°C, allowing the powder to flow and fuse into a smooth, continuous “skin.” Cure time and temperature vary depending on the powder chemistry and part thickness.

4. Quality Assurance

   All coatings are inspected for consistency, coverage, and finish integrity, with workflows aligned to QUALICOAT best practices for architectural aluminium.

Applications

Our powder coatings are suitable for a wide range of architectural and industrial uses, including:

• Aluminium façades and curtain walls

• Doors and windows

• Louvers and balustrades

• Furniture and equipment

• Decorative and functional metal components

Performance Benefits

• Superior impact and abrasion resistance

• Even coverage and stable colour finish

• Corrosion and weather resistance for outdoor use

• Solvent-free and low-waste process

Why Choose Rainbow Powder Coating?

• Expertise across multiple substrates including aluminium, steel, and iron

• Flexible options with a wide selection of powders, finishes, and colours

• In-house pretreatment methods tailored to project needs

• Commitment to international quality standards for architectural aluminium

• Local UAE experience in finishes engineered for harsh sun, humidity, and coastal conditions