The short answer
Assess the Rot Depth
Start by probing the rotted area with a screwdriver or awl. If the wood is soft and crumbly, the rot is active. If it is just surface discoloration, you might be able to sand it down and paint over it. But if the rot extends more than a quarter inch deep, you likely need to remove the affected section.
Look for signs of water intrusion behind the siding, such as stained sheathing or damp insulation. Rot that reaches the wall cavity can weaken the structure and invite mold. In that case, you need more than a cosmetic patch. A professional can check the surrounding framing and let you know if a simple repair will hold.
Repair or Replace
For a small, isolated spot, you can cut out the rotted piece with a circular saw and splice in a new piece of siding. Match the profile and overlap so water sheds properly. Seal all edges with exterior caulk and prime the bare wood before painting. This works if the rot is limited to one board.
If rot spans several boards or reaches the sheathing, replacement is the safer route. Remove the damaged siding, inspect the house wrap and framing, and replace any rotted wood underneath. Then install new siding and flash it correctly. This prevents the rot from spreading and keeps moisture out of the wall cavity.
- Check for soft spots along the bottom edge of siding
- Look for peeling paint or bubbling that hides rot
- Inspect around windows, doors, and corners
- Feel for dampness behind the siding after rain
- Note any gaps where water could enter
Find the Water Source
Rotted siding is almost always a sign of water getting where it should not. Common culprits include leaky gutters, missing drip edges, failed caulk around windows, or sprinklers hitting the wall. Fixing the source is just as important as repairing the siding, or the rot will return.
Check the roof for missing shingles or damaged flashing, and look at the gutter seams. If you have a sprinkler system, adjust the heads away from the siding. After heavy storms, inspect the siding for water streaks or soft spots. Catching the source early saves you from bigger repairs later.
When to Call a Pro
If the rot is widespread or you are not comfortable working at heights, call a local water damage pro. They can assess the extent of the damage and determine whether the framing is compromised. They also have the tools to match siding profiles and ensure a watertight installation.
A pro can also spot hidden issues, like rotted sheathing or mold behind the siding. They will remove the damaged materials and prepare the wall for new siding. You can expect the work to involve cutting, fitting, and sealing, but the exact steps depend on your home's construction and the size of the damaged area.
Prevent Future Rot
Once the siding is repaired, keep water away from the wall. Maintain a 6-inch gap between the soil and the bottom of the siding to reduce splash-up. Keep gutters clean and downspouts directed away from the foundation. Reapply caulk around windows and doors every few years.
Inspect your siding each spring and fall. Look for cracks, peeling paint, or soft spots. If you find damage early, you can patch it before it spreads. If you live in Euless, keep an eye on the siding after hailstorms, since hail can crack the paint and expose the wood to moisture.
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Call Now (817) 799-6732Frequently asked questions
How do I know if rot is too deep to repair?
Probe the wood with a screwdriver. If it sinks in easily more than a quarter inch, the rot is likely too deep for a simple patch. Also check if the rot extends behind the siding into the sheathing or framing. That usually means you need to replace the affected section.
Can I paint over rotted siding?
Painting over rot only hides the problem and traps moisture inside. The rot will continue to spread underneath the paint. You need to remove the rotted wood first, then prime and paint. If the rot is just surface deep, sand it down and treat it before painting.
What causes siding to rot in Texas?
Humidity and frequent rain can keep the wood moist, especially if there are leaks. Spring hail can crack the paint, letting water in. Poor drainage from gutters or sprinklers also contributes. Regular inspections help catch issues early before rot takes hold.