Why Is Siding Damaged?

Your siding faces the elements every day. Heavy rain can force water behind the panels, especially if the edges are not sealed. In a humid subtropical climate, spring hail and thunderstorms can dent or crack siding. Over time, this exposure leads to warping, splitting, and discoloration.

Moisture is the biggest enemy of siding. When water gets trapped behind it, the wood or fiber cement can rot, and metal siding can rust. This often happens around windows, doors, and corners where flashing is missing or damaged. If you see bubbling paint or soft spots, water is likely already inside.

Siding can fail because it was not put on correctly. Nails that are too tight prevent the panels from expanding and contracting with temperature changes. That stress causes buckling. If the siding was installed without proper flashing or drip edges, water can run behind it.

Age is another factor. Over years, the protective finish wears away, and the material becomes brittle. Cracks appear, and the siding loses its ability to shed water. Regular maintenance, like repainting and resealing, can extend its life. But once the damage starts, it tends to spread.

Once you find damage, start by checking the area for water entry. Look at the roofline, gutters, and window seals. Clear any clogged gutters that might be overflowing onto the siding. If you can see the source, like a dripping downspout, fix that first.

For serious damage, you may need to replace the affected siding. This is not always a simple job, because the water may have reached the wall cavity. In that case, you might need structural drying to dry out the wood before repairs. Consider contacting local water damage pros for an inspection.