CORVALLIS, Ore. — Ignoring moisture and insect damage in the home can lead to expensive problems later. An annual inspection — indoors and out — is essential to head them off, according to the Oregon State University Extension Service.
Whether you do it yourself or hire a professional, begin by reviewing OSU Extension’s Mold control: Home inspection checklist to help guide your inspection and address common problems. Then, take a systematic tour of your house.
Outside inspection
- Foundation: Check for water wicking up from the soil. If present, improve drainage.
- Vegetation: Trim plants and tree branches at least 24 inches from the house. These can serve as pathways for carpenter ants.
- Gutters and downspouts: Inspect during rain or snowmelt for leaks or breaks.
- Decks: Look for rot, especially where the deck attaches to the house.
Crawl space inspection
Arm yourself with gloves, coveralls, a headlamp and a screwdriver, then look for:
- Vapor barrier: A plastic layer on the soil floor to protect joists from moisture.
- Sill plates and supports: Probe wood for rot or insect damage. Newer homes should have pressure-treated sill plates.
- Sawdust piles: May indicate carpenter ants. Brush them away to check for new activity later.
- Mud tubes: A sign of termites.
- Rodent nests: Remove to prevent mites, fleas and other pests.
Indoor inspection
- Attic: Look for wet spots that signal a roof leak, and remove animal nests.
- Bathrooms and kitchen: Inspect under sinks for leaks or gaps around pipes, which provide entry points for rodents. Seal gaps with steel wool or tin.
- Crawl space check: Just like outside, inspect wood for rot and insect damage.
Document your findings each year to track changes over time.
What to do if you find problems
- Don’t panic: Most damage develops over years, so a short delay won’t worsen the situation.
- Carpenter ants: Treat nests in mid-April when they are active.
- Termites and carpenter ants: Large colonies should be handled by professional exterminators.
- Rot: Always fix the source of moisture before replacing damaged wood.
By taking time each year to inspect your home, you can prevent small issues from turning into costly repairs.
Previously titled Stay on top of moisture and insect damage or pay the price
