Key Takeaways:
- Never start repairs until a pro confirms the colony is eliminated.
- You can patch drywall and surface wood yourself, but structural repairs require a professional.
- Never use wood filler on load-bearing studs or joists; it won’t hold the weight.
- When replacing lumber, use pressure-treated (borate) wood so termites don’t eat the repairs.
How to Fix Termite Damage in Your Home
If termites have damaged your property, it’s always best to get a professional’s opinion on the extent of the damage. It may be possible to fix some minor issues or cosmetic damage, but always leave the repair of structural issues to a professional.
Depending on the severity of the infestation, you may or may not be able to fix termite damage on your own. In minor cases, damage may be fixable through a few DIY methods. However, it is usually best to consult a professional to assist with the repairs, especially because termite damage can be hidden within a home.
Step 1: Stop the Infestation
You cannot repair a house that is still being eaten. Before any repairs begin, a licensed pest control professional must treat the property and confirm the colony is eliminated. Most contractors will require a “clear” termite report before they agree to open up your walls.
Step 2: Assess the Severity (Invasive vs. Non-Invasive)
Termite damage is often hidden. A professional contractor may need to peel back sheetrock or flooring to reveal the full extent of the “termite galleries” (the hollowed-out tunnels inside the wood).
- Surface Damage: Often looks like bubbling paint or small pinholes in drywall.
- Structural Damage: Wood that sounds hollow when tapped, sagging floors, or doors that no longer close properly.
Step 3: Repairing the Damage
Cosmetic Repairs (DIY Friendly)
If the damage is superficial—meaning the termites only grazed the surface of the wood or drywall—you may be able to handle it yourself.
- Wood Hardeners & Fillers: If a non-load-bearing piece of wood has minor tunneling, you can clean it out and use a wood hardener to reinforce the fibers, followed by a wood filler to smooth the surface.
- Drywall Repair: Termites eat the paper backing of drywall, causing the paint to bubble. This usually requires cutting out the damaged section, patching it with new sheetrock, and repainting.
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Structural Repairs (Professional Only)
When termites hollow out a support beam, stud, or floor joist, do not use wood filler. The wood has lost its ability to hold weight. Professionals typically use one of two methods:
- “Sistering” (Scabbing): This is the most common and cost-effective method. Instead of removing the damaged beam, the contractor bolts a new, stronger piece of lumber directly alongside the old one. The new wood takes over the load-bearing duty.
- Full Replacement: In severe cases where the wood is completely disintegrated, the structure must be temporarily supported (jacked up) so the damaged timber can be cut out and replaced entirely.
Can Termite Damage Completely Destroy a Property?
It is very rare, but several termite infestations have been known to cause irreparable damage to a structure. When this is the case, it’s likely the infestation has been happening for more than a decade or two, completely undetected. While it may be costly or frustrating, the damage caused by termites can almost always be fixed.
Working with a professional termite control company can help prevent infestations from happening in the first place.
Prevention Is the Best Repair
Once repairs are finished, the new wood is just as tasty to termites as the old wood.
- Pre-treat new lumber: If you are replacing wood, ask your contractor to use pressure-treated lumber (borate-treated), which is resistant to termites.
- Maintain your barrier: Ensure your pest control provider maintains a continuous protective barrier around your home’s foundation to ensure you never have to do these repairs again.
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