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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.

There should be small gaps between your roof and the walls of your home, and other buildings. These small gaps let building materials shift, expand, and contract with weather and other outside forces, and they prevent moisture from wicking down walls from roofing and gutter systems. Without these strategic gaps, your home’s exterior and its finishes can sustain water damage, decay, peel, delaminate, and crack. However, there is a fine line between a smart gap and a problematic gap—all  gaps should be small, intentional, and covered or filled in with foam insulation to prevent pests from using them as access points.

The most obvious and severe sign of a roof leak is the presence of wet spots on your ceilings, specifically on the top floor of your home. You can also identify a roof leak from your attic if you see sagging insulation or if you notice mold growth or water stains on the rafters or the underside of the roof deck. From the street, look for cracked or missing shingles, moss growth, and shingles that are curling upward, all of which can suggest a leak.

Yes, installing snow guards is highly recommended for metal roofs, especially if you live in an area with moderate to heavy snowfall. Metal roofs have smooth, slick surfaces that offer little traction, which can cause large, heavy loads of snow and ice to slide off all at once in a dangerous "rooftop avalanche."

This sudden release of snow can cause serious injury to anyone below and damage personal property, such as cars or landscaping.

Snow guards act as a barrier, holding the snow on the roof so it can melt and slide off in smaller, more controlled amounts. While low-slope metal roofs in areas with very little snow might not strictly require them, installing snow guards is a valuable safety measure to protect your family and property.