Signs It's Time to Repaint Your Home's Exterior

Your home's exterior doesn't fail all at once. It gives you signals — and if you know what to look for, you can catch problems early, before they become expensive repairs. After 30 years on job sites across Oregon, Washington, Idaho, and California, these are the six signs we see most often.

1. Peeling or Flaking Paint

Peeling is the most obvious sign, and also one of the most serious. When paint separates from the surface, it means the bond between the paint film and the substrate has failed. The most common cause is moisture — either from outside (inadequate caulking, failed flashing) or from inside (humidity escaping through walls).

Don't just scrape and repaint over peeling areas. A good painter will diagnose the moisture source first. Otherwise, the new paint will peel just as fast.

2. Fading and Color Unevenness

All exterior paint fades over time, but significant fading — especially on south- and west-facing walls — signals that the UV-protective resins in the paint have broken down. Once the resin is gone, the paint film itself starts degrading rapidly.

Uneven fading often means the original job used inconsistent coats, or that a lower-quality paint was used on certain sections. Sherwin-Williams Duration and Emerald resist UV degradation significantly longer than budget alternatives.

3. Chalking

Run a dark cloth along your siding. If it comes away with a white, powdery residue, your paint is chalking — the pigment is breaking down and releasing as powder. Light chalking is normal near end-of-life, but heavy chalking means the paint has fully degraded and is no longer protecting your siding.

Chalking surfaces require thorough cleaning and priming before repainting — otherwise the new paint won't bond properly.

4. Mold, Mildew, and Algae Growth

Dark streaks, green patches, or fuzzy growth on your siding are signs of biological growth — mold, mildew, or algae. This is especially common on north-facing walls that stay damp, and on homes surrounded by trees.

Surface cleaning alone won't fix this permanently. A quality repaint with a mildewcide-containing paint (like Sherwin-Williams Emerald) will dramatically reduce regrowth. We also treat the underlying moisture conditions when possible.

5. Cracked or Missing Caulk

Caulk around windows, doors, trim, and penetrations is your home's first line of defense against water intrusion. When it cracks, shrinks, or pulls away, water gets behind the paint film and into the wood. You'll often see paint failure directly above failed caulk within a year.

We re-caulk every penetration as part of every exterior paint job. It's not optional — it's fundamental.

6. Visible Wood Damage

If you're seeing soft, spongy, or discolored wood — especially at sill plates, trim boards, or areas below gutters — you're past the paint stage and into rot repair territory. This requires carpentry work before any painting begins.

Catching it at the "peeling paint" stage is far cheaper than waiting until you're replacing boards.