Pre-painted Aluminium Coils For Rain Gutter Systems

Pre painted aluminum coils for rain gutter systems are a high-performance aluminum material widely used in roof drainage of villas and commercial buildings, combining the lightweight corrosion resistance of aluminum alloys with the decorative protection of coatings. And we Haomei Aluminum is a leading color coated aluminum coil supplier based in China and have many customers who have import our aluminum gutter coils to making rain gutter and downspouts.

Specification of pre painted aluminium coil for rain gutter:

– Aluminum alloy grades:

Commonly used 3003 series (including manganese alloys) or 3105, tensile strength ≥120MPa, elongation ≥20%, both strength and formability.

– Thickness specifications:

Gutter body: 0.8-1.2mm (recommended ≥1.0mm for coastal high corrosion environments).

Downspout: 0.7-1.0mm, corrugated rectangular design can enhance deformation resistance.

– Mainstream coating types:

Polyester (PE) coating: cost-effective, suitable for general climate environments, and provides a 10-15 year weatherproof warranty.

Fluorocarbon (PVDF) coating: using vinylidene fluoride resin, it has stronger salt spray corrosion resistance, can meet the needs of coastal or highly polluted environments, and the warranty period can reach 20-30 years.

– Coating process:

It is recommended to use a double coating process (primer + topcoat), with a total thickness of ≥25μm (PVDF) or ≥18μm (PE) to ensure adhesion (≥1 level) and impact resistance (50kg/cm without falling off).

Performance advantages of aluminum coil for gutters:

– Lightweight:

The density of aluminum is only 2.7g/cm³, which is easy to install and reduces the load-bearing capacity of the building.

– Anti-corrosion:

The natural oxide film combined with the coating on the surface of the substrate can withstand erosion such as salt spray and acid rain, and extend the service life.

– Color stability:

The roller coating process is adopted, the color is uniform and does not fade for a long time, and supports customized RAL/Pantone color cards or special effects such as wood grain and stone grain.

– Beauty:

A variety of colors and surface treatments can be provided to meet the aesthetic needs of the building.

– Easy processing:

Aluminum coils are easy to cut, bend and form, suitable for different design needs.

– Environmental protection:

Aluminum is recyclable and meets the requirements of sustainable development.

Typical application scenarios of colorful aluminum rain gutters:

– Civil buildings: residential roof gutters, balcony eaves.

– Industrial plants: steel structure plant gutters, logistics warehouse water systems.

– Public facilities: large-span roof drainage in stations, airports, stadiums, etc.

– Special environments: coastal buildings (salt spray resistance), chemical plants (acid and alkali resistance).

Pre painted aluminum coils are widely used in rain gutter systems in residential and commercial buildings as an important component for collecting and guiding rainwater. Its excellent performance not only improves the durability of the building, but also enhances the overall aesthetics. Choosing the right prepainted aluminum coil can effectively reduce maintenance costs and ensure the long-term stable operation of the rainwater system.