How to renovate a steel roof?

Steel pitched roofs are highly prized for their robustness, modern aesthetics and ease of installation. However, like all materials exposed to the elements, they can suffer damage over time: corrosion, cracks, leaks and loss of shine. A well-executed renovation can extend their lifespan, while improving their performance and appearance. This article provides a step-by-step guide to steel roofing renovation, highlighting the advantages of using a specific paint for this type of project.

Why renovate a steel roof?

Before diving into the steps, it's essential to understand the reasons why renovation is necessary. Steel roofing is widely used in industrial, agricultural and commercial buildings for its lightness, strength and ease of installation. However, like all materials exposed to the elements, it eventually deteriorates.

1. Extending service life: A well-maintained roof can last for decades. By renovating, you avoid the costly and complex process of replacing the entire roof.
2. Waterproofing problems: Water infiltration can damage the underlying structure, resulting in significant repair costs.
3. Corrosion protection: Metal exposed to the elements can rust, compromising the roof's strength.
4. Aesthetic enhancement: A specific renovation paint can give the roof a new lease of life, improving the overall appearance of the building.
5. Energy performance: solutions like cool roof white paints reduce the heat absorbed by the roof, improving the building's thermal comfort.

Steps to renovating a steel pitched roof

1. Inspection and diagnosis

The first step to a successful renovation is a thorough diagnosis of the roof.

• Spot corrosion: Identify rusted or damaged areas.
• Identify leaks: Locate cracks or defective joints.
• Assess general condition: Check that fasteners and cladding are in good condition.

Use tools such as a thermal imaging camera to detect water infiltration or thermal bridges.

2. Preliminary cleaning

Thorough cleaning is essential before any intervention.

• Degreasing and debris removal: Remove leaves, dust, moss and other dirt. A high-pressure cleaner is ideal for this step.
• Mould treatment: Use an anti-mould product to prevent the return of mould.
• Rust removal: Apply a rust converter to the affected areas to stabilize the metal.

3. Surface preparation

A clean, ready surface guarantees better adhesion of products applied later.

• Sanding: Sand rusty areas to remove deposits.
• Rinsing: Make sure the surface is free of residues.
• Completely dry: The roof must be completely dry before proceeding to the next step.

4. Application of undercoat

A special metal undercoat is crucial to the durability of the final coating.

• Choose a rust-proof undercoat: This product protects the roof against future corrosion.
• Apply evenly: Use a roller or sprayer for even coverage.
• Drying time: Follow the manufacturer's recommendations before proceeding to the next step.

5. Renovation paint

Painting is the most important step in restoring waterproofing, protecting and beautifying the roof.

Choosing the right paint

• Specific paint for steel tanks: Choose a paint that's UV-, weather- and corrosion-resistant.
• Waterproof paint: Opt for a solution that fills micro-cracks and prevents water infiltration.
• Cool roof: If you're looking to reduce heat in the building, choose a reflective white paint.

6. Final inspection and maintenance

Once the renovation is complete, inspect the result.

• Visual check: Make sure the roof is uniform and that there are no missed areas.
• Leak tests: If in doubt, test with a water jet.
• Maintenance plan: Plan an annual cleaning and regular inspection to keep the roof in good condition.

The advantages of using our steel pan paint

As the manufacturer and applicator of a specific paint for metal roofs, we offer you a high-performance solution. Here's why our paint stands out:

1. Corrosion protection: Formulated to withstand extreme climatic conditions, it effectively prevents rust.
2. Durable sealing: Our paint fills cracks and provides long-term protection against infiltration.
3. Customization: Available in a wide range of colors, including reflective white for the cool roof.
4. Ease of application: Formulated for fast, efficient professional application.
5. Reduced energy costs: Cool roof reduces building temperature, lowering air-conditioning requirements.