Salt in the air can lead to paint decay on houses due to a process called corrosion. Salt particles, especially from ocean spray, absorb moisture from the air and create a corrosive environment. This moisture and salt mixture penetrates the paint, causing it to break down over time. The salt air on Kauai accelerates the oxidation of metal components in the paint, promoting rust formation, which further weakens the paint’s adhesion to the surface. Ultimately, this cycle of salt-induced corrosion can result in paint peeling, blistering, and overall deterioration of the protective coating on the house.
What we do:
1. Surface Inspection:
• Evaluate the extent of corrosion and damage on the house’s surfaces.
• Identify areas with peeling, blistering, or compromised paint.
2. Cleaning:
• Use a pressure washer after we spray bleach or appropriate cleaning agents to remove salt deposits, dirt, and loose paint.
• Ensure thorough cleaning to eliminate any remaining salt particles.
3. Scraping and Sanding:
• Scrape off loose and peeling paint using a scraper.
• Sand the surfaces to create a smooth and even texture for better paint adhesion.
4. Repairing Damage:
• Address any rust spots on metal surfaces by removing rust with a wire brush and applying a rust converter.
• Fill cracks, holes, or damaged areas with appropriate fillers or epoxy compounds.
5. Priming:
• Apply a high-quality primer to create a protective barrier between the surface and the paint.
• Choose a primer specifically designed to inhibit corrosion and enhance adhesion.
6. Choosing the Right Paint:
• Select a durable, weather-resistant paint suitable for coastal environments.
• Opt for paints with anti-corrosive additives or marine-grade formulations
which include a greater sheen.
7. Application:
• Apply the chosen paint using experienced techniques, ensuring even coverage.
• Use multiple coats if necessary, allowing sufficient drying time between coats.
8. Sealing and Maintenance:
• Consider applying a clear sealant or topcoat for added protection against salt air.
• Regularly inspect and maintain the painted surfaces to address any signs of deterioration promptly.The longevity of new paint in salt air depends on various factors, including the quality of the paint, the preparation of the surfaces, and the severity of the salt exposure. Generally, in coastal environments with salt air, you can expect well-prepared and high-quality exterior paint to last around 5 to 10 years.
However, houses closer to the ocean, where salt exposure is more intense, might experience a shorter lifespan for their paint, requiring more frequent maintenance. Regular inspection and timely repainting, especially in areas prone to corrosion, can help extend the life of the paint and protect the surfaces against the corrosive effects of salt air.