06/13/2026
What You Can't See Can Cost You
(Foundation inspection)
One of the biggest misconceptions homeowners have is that if a deck or porch post looks good above ground, it's structurally sound.
Unfortunately, that's often not the case.
Most wood rot and decay occurs below the soil line, where homeowners can't see it. The area just beneath the surface stays damp for long periods of time, receives very little sunlight, and is constantly exposed to moisture from rain runoff, overflowing gutters, mulch, and wet soil. Over the years, this creates the perfect environment for dry rot and wood decay to develop.
By the time a post shows visible damage above ground, the deterioration below the surface is often much more advanced.
The photos below are a perfect example. The posts appeared relatively normal from the outside. Once the mulch and soil were pulled back, extensive decay was discovered at the base where the wood had been trapped in a damp environment for years.
Areas Most at Risk:
✔ Posts near overflowing gutters
✔ Downspout discharge locations
✔ North-facing sides of homes with limited sun exposure
✔ Areas with heavy mulch buildup
✔ Shaded decks and porches that stay damp after rainfall
Prevention Tips:
• Keep gutters and roof drainage systems clean
• Direct water away from support posts
• Avoid piling mulch against wood
• Expose post bases to airflow when possible
• Inspect older decks and porches regularly
If your home is over 20 years old, now is a great time to check these hidden areas.
At WNC Washing & Staining, we offer a free exterior support post inspection for homes over 20 years old. A simple inspection today could help prevent a costly structural repair tomorrow.
Most post rot starts where you can't see it. That's why it pays to look below the surface.
Contact WNC Washing & Staining to schedule your complimentary inspection.
