Living near the coast offers breathtaking views, refreshing breezes, and the soothing sound of waves. However, the very element that makes coastal living so desirable – saltwater – can also pose challenges to the structural integrity of homes, particularly the roof. At San Diego County Roofing & Solar, we understand the unique challenges faced by coastal homes and are here to shed light on the effects of saltwater on various roofing materials.
Saltwater and Its Effects on Your Home’s Exterior
The gentle coastal breeze, while refreshing, carries with it salt particles. These particles, over time, can contribute to the deterioration of your property’s exterior. Continuous exposure to salt mist is a natural occurrence for homes near the coast, leading to premature degradation of the building. This affects not just the aesthetics but also the safety, economy, and functionality of the structure.
Homes, regardless of their age, are susceptible to the corrosive effects of saltwater. The closer the property is to the ocean, the more pronounced the effects on its exterior coatings.
Understanding Saltwater Corrosion
If you reside near the ocean, your home is constantly exposed to saltwater. This can lead to the exterior structure of your house showing signs of wear, such as fading, peeling, and flaking. This damage, known as salt air corrosion, can sometimes be as detrimental as natural disasters like storms or hurricanes.
While there are preventive measures like sealants that can mitigate some of these effects, they aren’t permanent solutions. Saltwater doesn’t just affect homes during the summer; wind-borne saltwater splashes can occur year-round. The salt crystals from the ocean attach to roof tiles and accumulate over time, leading to potential damage.
Why is Saltwater So Corrosive?
Seawater typically has a sodium chloride concentration of around 3.7%. This salt concentration makes seawater highly corrosive, especially when compared to freshwater. Factors that influence the rate of corrosion include chloride content, oxygen availability, and temperature.
The Effects of Saltwater on Different Roofing Materials
Terracotta Tiles
Terracotta tiles have been a popular roofing choice for their durability and aesthetic appeal. However, they are porous and require regular maintenance, especially in coastal areas. Saltwater can be particularly damaging to low-quality clay tiles, often resulting from rushed manufacturing processes. Regular inspections and maintenance are crucial for homes with terracotta roofs.
Concrete Roof Tiles
Comprising sand, water, cement, and mineral pigments, concrete tiles are known for their resistance to frost. But they aren’t immune to saltwater effects. Homes near the coast can experience “concrete cancer,” where the reinforcing steel inside the concrete rusts due to salt in the air. Protective roof coatings can offer a layer of defense against saltwater for these tiles.
Bricks
Older buildings, especially those with softer lime mortar, are vulnerable to salt deterioration. Salt particles can adhere to and get absorbed by bricks, leading to significant damage during rainy seasons. The salt can cause the mortar to disintegrate, compromising the structural integrity of the building.
Maintaining Your Roof in Coastal Areas
Regular maintenance is the key to prolonging the life of your roof in saltwater-prone areas. While certain products can help prevent saltwater corrosion, they are not long-term solutions. Homes on the coast should consider annual pressure washing to remove accumulated dirt, sand, and salt crystals. A protective coating on the tiles can also act as a barrier against salt air and water.
At San Diego County Roofing & Solar, we emphasize the importance of being proactive. By understanding the effects of saltwater and taking timely measures, you can ensure the longevity and safety of your coastal home. If you’re seeking expert advice or services related to roofing in San Diego, our team is here to assist. Remember, while the ocean’s beauty is timeless, the effects of its saltwater on our homes require our attention and care.
