For homeowners with Mediterranean-style properties, maintaining natural clay tiles is essential to preserving curb appeal and structural durability. Fired from natural clay in high-temperature kilns, these barrel tiles can endure up to 100 years. However, the system requires active upkeep to ensure the underlayment underneath remains dry and leak-free. We outline the steps to inspect and preserve clay tiles, helping you extend the lifespan of your entire roofing system.
Clearing Moss, Algae, and Debris From clay tiles
Florida's high humidity and rainfall promote algae and moss growth in shaded areas. While algae does not rot clay, heavy moss and algae can trap moisture on the surface of clay tiles, preventing them from drying.
Organic debris like leaves and pine needles can also accumulate in the valleys, blocking the drainage channels between the individual units. Keeping gutters clean is key. When these channels are blocked, rainwater cannot drain freely down the slope. Instead, the water pools and flows backward underneath the head lap of the tiles, directly exposing the underlayment to constant moisture. Certified clean crews utilize a sodium hypochlorite solution blended with specialized surfactant soaps. This mixture kills mold, moss, and algae spores at the root without harming the underlying deck. This trapped moisture can degrade the underlying underlayment membrane over time. Use a low-pressure soft-wash chemical spray to clear moss and lichen, rinsing with a gentle garden hose. Never use high pressure pressure washers, as aggressive water jets can micro-fracture the tiles and strip the protective glaze.
Damage Inspection of clay tiles
Annual inspections are critical to identifying physical damage before leaks develop. Heavy storms can blow tree branches onto the roof, fracturing tiles.
Because water runs down the wavy channels, cracked clay tiles can expose the underlayment to water, accelerating its decay. Property owners should visually inspect their valleys and edges after major storm events. If you discover minor damage, read our guide on how to spot cracked clay tiles to perform prompt repairs using professional silicone adhesives.
Safe Walking on clay tiles
The most common cause of broken tiles is foot traffic. Whether you are cleaning gutters or installing holiday lights, walking on clay tiles can cause them to break easily under your weight.
If walking on the roof is necessary, follow safe techniques. Step only on the lower overlapping section of the tiles, where they are supported by the wooden batten strips below. Spread your weight evenly by wearing soft-soled shoes, and walk flat-footed to distribute your weight. Professional technicians use specialized walking boards and ladders to distribute weight across multiple tiles, while wearing OSHA-compliant safety harnesses to prevent slip-and-fall injuries. This protects you and your home.
Furthermore, you should avoid walking on the roof during the hottest part of the day. The dual-component adhesive foams used to secure the tiles can soften under high temperatures. Walking on hot tiles can cause them to slip or slide, tearing the adhesive bond and compromising wind security. Never step on the high crown or arches of the barrel, as they will crack immediately.
Fasteners for clay tiles
Securing tiles against wind uplift requires high-quality fasteners. Depending on the installation profile, tiles are secured using dual-component adhesive foam, screws, or copper wire ties.
For screw-fastened installations, installers must utilize corrosion-resistant fasteners. Standard zinc-plated screws will quickly degrade in Florida's salty air, leading to rust streaks. Stainless steel provides the best corrosion resistance. Premium stainless steel screws or hot-dipped galvanized fasteners are recommended to secure each piece. Experienced installers know that copper wire ties secure clay tiles against high wind uplift, providing flexibility that allows the tiles to shift slightly during thermal expansion without cracking. Over time, check that valley tiles have not slipped due to fastener fatigue. Securing loose fasteners prevents wind from getting underneath, preventing clay tiles from sliding off the structure during tropical storms.
Review Your Long-Term Roofing Strategy
Proper maintenance guarantees your system achieves its full 100-year potential. If you are comparing materials, review our detailed guide comparing a clay tile roof vs. metal panels.
Additionally, explore the importance of the underlayment for a tile roof to understand the waterproofing membrane beneath the tiles.
Preserve the Beauty of Your Estate
While the upfront labor is high, maintaining your clay tiles preserves the value, beauty, and security of your property. By following a bi-annual cleaning and inspection checklist, you protect the wood deck below and avoid expensive repairs. By taking care of your system you save money.
Contact us today for professional service to clean and evaluate your clay tiles. Our certified team is ready to inspect your system, apply algae-resistant treatments, and replace damaged pieces to keep your home watertight.
Learn more about our professional Mediterranean tile roofing services.
