Siding is your home’s raincoat. When it works, you never think about it. When water gets behind it, the damage can grow for years before you notice anything.
Many homes in Garner and Knightdale are now 20 to 40 years old. That is right about when hidden siding problems start to show up.
Why Water Behind Siding Is So Sneaky
Vinyl siding does not rot. But the wall behind it can.
Under your siding is a layer of house wrap and wood sheathing. If water keeps getting past the siding and does not drain out, that wood stays wet. Over time, it softens, molds, and rots, all while the outside still looks fine.
Warning Signs to Look For
On the Outside
- Siding that feels soft or spongy when you press on it
- Panels that bulge, buckle, or pull away from the wall
- Dark streaks or mold below windows and along the bottom rows
- Gaps or cracked caulk around windows and doors
- Peeling paint on trim
On the Inside
- Water stains or bubbling paint on walls near windows
- A musty smell in certain rooms
- Loose or stained baseboards on outside walls
- Higher humidity in one area of the house
Common Causes of Water Behind Siding
| Cause | What Happens |
|---|---|
| Missing or poor flashing around windows | Rain runs behind the siding at the window corners |
| Clogged gutters | Water spills over and runs down the wall |
| Sprinklers hitting the house | The same wall gets soaked over and over |
| Siding too close to the ground or mulch | The bottom rows stay wet and wick moisture |
| Storm damage | Cracked or loose panels let water in |
| Old siding installed over old siding | Trapped moisture has nowhere to go |
Why Garner and Knightdale Homes Are at Risk
Older parts of Garner, like the neighborhoods near downtown and Vandora Springs, have plenty of homes from the 1970s through the 1990s. Original siding and window flashing from that era are often past their prime.
In Knightdale, newer areas like Knightdale Station and Widewaters were built more recently. But builder-grade installs can still have weak spots, especially around windows and doors.
Add in our humid summers and heavy spring storms, and small leaks can turn into big repairs.
What to Do If You Spot Signs
- Find the source. Check gutters, sprinklers, and caulk first.
- Fix the easy stuff. Clean gutters and redirect sprinklers.
- Get it inspected. If walls feel soft or you see inside stains, have a pro look behind the siding.
- Act sooner, not later. Rot spreads. Early repairs cost far less.
What Happens During Siding Replacement
When we replace siding, we tear off the old panels completely. That lets us see the sheathing and framing underneath. If we find rot or water damage, we repair it before the new siding goes on.
We do not cover old siding with new siding. Covering it can trap moisture and hide the very problems you are trying to fix. Learn more on our siding replacement and installation page, or read how long vinyl siding lasts.
Frequently Asked Questions
Can vinyl siding hide water damage?
Yes. Vinyl itself does not rot, but the wood behind it can stay wet and rot without any visible sign on the outside.
How do I know if there is rot behind my siding?
Soft spots, bulging panels, and stains on inside walls are common clues. The only sure way is to look behind the siding.
Do you serve Garner and Knightdale?
Yes. Our shop is in south Raleigh, just minutes from Garner, and we work throughout Knightdale, Clayton, and Wendell. See our Garner and Knightdale pages.
Worried about your siding? Call (919) 851-0060 or request a free estimate.
About the Author
Harland Johnson is the owner of Harland Windows & Siding. He has run the company for over 40 years and has personally overseen window, siding, and sunroom projects throughout Wake County and the Triangle. Harland Windows & Siding is an A+ rated, BBB accredited business.