Tile roofs, including clay, concrete, and slate, are considered low-maintenance materials that require fewer repairs and less care than many other roofing options.

• Clay tiles require minimal maintenance. They stand up well to the elements and UV radiation, repel water, and do not easily stain, discolor, or fade in direct sunlight. Clay tiles do not need sealing. Maintenance is typically only required to replace cracked tiles, which can be caused by foot traffic, extreme weather, or fallen tree limbs.

• Concrete tiles are also low-maintenance but require more upkeep than clay. They need to be sealed every few years to maintain water resistance, and their color tends to fade more quickly than clay.

Aside from these material-specific needs, general maintenance for tile roofs includes annual inspections, routine gutter cleaning, and addressing repairs as they arise. A well-maintained tile roof can provide 50 to 100 years or more of protection for your home.

The best time to clean the outside of your house is during your outdoor spring cleaning. Wait until late spring, after the wave of pollen is done coating your home. You can also wash your house in late fall–before the first freeze–to remove leaves and branches from the gutters.

It’s possible that installing solar panels can lead to mold on the roof. The panels themselves are not the issue. Problems caused by improper installation—such as roof leaks and mounts that aren’t sealed properly—can cause mold. Another potential cause of mold is debris accumulation under panels, which can trap moisture. If you live somewhere with extreme snow, rain, or hail, your home could be more prone to mold.

While it’s not completely necessary for them to operate properly, as the occasional rainfall can rinse away dirt and debris, manually cleaning solar panels from time to time can keep them operating more efficiently.

Dirt, debris, pollen, and bird droppings can collect on the surface of the panels. Depending on the amount of solar panels you have, this can add up over time, so set a regular maintenance schedule. Moreover, if you live in a climate with little to no rainfall, more debris can accumulate, causing inefficiencies that would be clear in your electricity bill.