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How to Inspect Your Roof After Winter for Hidden Damage

Last updated October 25, 2026

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The short answer

Start from the Ground

Begin your roof inspection without climbing. Walk around your home and look for obvious issues: missing, cracked, or curling shingles, rusted flashing, or sagging sections. Use binoculars to examine the roofline and gutters from a safe distance.

Check the ground for granules from asphalt shingles, which can signal aging. Also look for fallen branches or heavy debris that might have damaged the surface. In wet climates, moss and algae can build up on roofs, so note any green patches and address them to prevent moisture retention.

Check Flashing and Valleys

Flashing is the metal or rubber material that seals roof edges, chimneys, and vents. After winter, it can pull away or crack. Inspect these areas closely; they are common leak points. Use a ladder to get a safe, close look, but never step on a roof that is wet or icy.

Valleys are the V-shaped channels where two roof planes meet. They handle heavy water flow, so they take extra abuse. Look for lifted or rusted metal, and check that the shingles or tiles in the valley are intact. If you see gaps, water can seep into the decking below.

  • Look for rust or corrosion on metal flashing
  • Check for gaps where flashing meets the roof surface
  • Inspect valley metal for cracks or holes
  • Ensure shingles are not lifted in the valley
  • Note any signs of previous patching or sealant

Inspect Attic and Ceilings

Hidden damage often shows up inside before it is visible from outside. Go into your attic on a dry day and look for water stains, dark streaks, or damp insulation. Use a flashlight to examine rafters and the underside of the roof deck for rot or mold.

Also check ceilings in upper-floor rooms for discolored patches or peeling paint. These can indicate a slow leak that has been traveling along framing. If you find any wet or stained areas, trace them to the source if you can, but do not disturb mold or insulation without protection.

  • Look for dark stains on wood or drywall
  • Feel insulation for dampness or clumping
  • Check for musty odors that suggest moisture
  • Inspect roof decking for soft spots
  • Look for light coming through cracks

Examine Gutters and Downspouts

Clogged or damaged gutters can cause water to back up under shingles and into the eaves. Clear out leaves and debris, then run water through the system to check for leaks. Make sure downspouts are attached and direct water away from your foundation.

Look for rust, holes, or separated joints. Also check that gutters slope slightly toward downspouts so water does not pool. If your gutters are full of granules from shingles, that is a sign your roof is aging and may need attention.

Know When to Call the Pros

Some damage is beyond a visual check. Soft spots in the roof deck, cracked flashing, or signs of water inside your home warrant a professional assessment. Local water damage pros can do a thorough inspection, including moisture readings, to find hidden issues before they become major repairs.

If you suspect a leak, act quickly. Water can damage insulation, framing, and drywall in a short time. A professional can help mitigate immediate water damage and guide you on the next steps. Policies vary, and your insurer decides what is covered, so check your policy to understand your coverage.

Water damage does not wait

Phones are answered 24/7 for Kirkland and nearby communities.

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Frequently asked questions

How often should I inspect my roof?

Inspect your roof at least twice a year, in spring and fall, and after any major storm. In wet climates, you might also check for moss growth in late winter. Look for damage after heavy wind or hail.

Can I inspect my roof myself?

You can do a ground-level and attic check yourself, but climbing on a roof is risky. Use a ladder only if you are comfortable, and never walk on a wet or steep roof. For a full assessment, contact a professional.

What are signs of hidden roof damage?

Hidden damage often shows as water stains on ceilings or in the attic, musty smells, or peeling paint. Outside, look for lifted shingles, rusted flashing, or granules in gutters. If you notice any, act quickly to prevent further issues.

Call Now (425) 406-3256