Roof cleaning might not be the first thing on your to-do list, but it’s more important than most people think. Over time, a roof can gather enough debris, grime, and biological buildup to start causing issues, from curb appeal problems to costly repairs. While it’s tempting to tackle it with a ladder and a pressure washer, not every job is meant to be a DIY project.
If you’ve been wondering whether it’s time to call in a pro, check out these five signs your roof needs a professional cleaning.
1. Moss and Algae Growth
If your roof is starting to resemble a science project, it’s time to act. Moss and algae look unsightly and trap moisture that gradually breaks down shingles and creates a perfect environment for decay. Even small patches can spread across the surface in a single season, especially in damp or shaded areas. Professionals can remove them and prevent further damage.
2. Dark Streaks and Discoloration
What appears to be dirt may actually be algae or mildew. These dark streaks can make your roof look older than it is and absorb more heat, increasing the attic temperature. They also signal that your shingles are allowing organic growth. A professional cleaning helps to restore your roof’s original color and stops fungus from spreading further.
3. Visible Nesting or Animal Activity
When you notice birds, squirrels, or insects congregating around your roofline, there’s a good chance they’ve found a cozy hiding spot. Buildup from leaves, twigs, or moss can create inviting pockets for nesting. Once animals move in, they can damage shingles, tear through insulation, or cause drainage issues. A professional can remove the accumulation and discourage future visitors.
4. Gutter Overflow or Blockage
Are your gutters overflowing after just 10 minutes of rain? That runoff could be carrying grime, moss, or algae from your roof straight into the downspouts. If you see tiny plants sprouting in your gutters—or if water’s pooling around your home’s foundation—it’s time for a cleaning. Ignoring this leads to leaks, sagging gutters, or roof rot.
5. Dull or Patchy Appearance
Sunlight fades parts of the roof unevenly, especially when dirt or moss collects in patches. What starts as a cosmetic issue can indicate deeper problems. A professional roof wash restores the roof’s appearance, bringing back its original color and texture. It also enhances your home’s overall curb appeal, which is one of the top benefits of regular roof washing.
Too Risky To DIY
These five signs your roof needs a professional cleaning are easy to ignore until damage forces your hand. Skip the ladder! Algae, mildew, and wet leaves make shingles slick and dangerous. Steep pitches only add to the risk.
Professional cleaners use equipment designed specifically to protect your roof’s surface while staying safe themselves. For any roof that’s high, angled, or heavily affected, hiring help is the smartest call.
