Conditions Conducive
Excess Moisture
Excess moisture is the primary cause of all wood-destroying organisms. Whether it’s termites, wood rot, or fungi, moisture is what allows these problems to take hold. A house that remains completely dry is far less likely to experience termite activity or structural damage caused by decay.
Moisture intrusion can stem from numerous sources, including plumbing leaks, damaged or aging roofs, clogged gutters, improperly draining A/C units, irrigation overspray, and even something as simple as poor ventilation. In coastal areas, homes may be free of these common moisture sources but still experience issues due to the persistent marine layer, which keeps wood damp for extended periods.
Experienced termite inspectors know that moisture detection is just as important as spotting active infestations. They carefully evaluate a home for potential problem areas, asking key questions:
- Where does the A/C condensate line drain? Does it discharge near the foundation, creating a persistent moisture source?
- Are there dark spots in the attic sheathing, indicating past or ongoing roof leaks?
- Does the roof have design flaws, such as flat or improperly sloped sections that allow water to pool?
- Are there signs of leaks under sinks, around toilets, or near appliances?
- Do wooden structural components show signs of high moisture content or fungal growth?
Once a moisture issue is identified, the next step is determining whether it has led to a wood-destroying organism infestation. If moisture is present, it’s only a matter of time before termites, fungi, or beetles take advantage. Addressing the moisture source is just as critical as treating the infestation itself—otherwise, the problem will return.
Earth-to-Wood Contact
The leading cause of wood rot and subterranean termite infestations is direct wood-to-soil contact.
Even pressure-treated wood will eventually decay if placed directly on the ground. Without a concrete barrier, moisture from the soil wicks into the wood, creating the perfect environment for wood-decaying fungi and attracting foraging subterranean termites.
Common examples of earth-to-wood contact include planters, railroad ties, tree stumps used in landscaping, decks, and wooden footings for piers under mobile homes.
Faulty Grade:
A faulty grade condition occurs when the soil level reaches or exceeds the top of a home’s foundation. This seemingly minor issue can lead to significant problems, including structural damage and hidden termite infestations.
When soil comes into direct contact with stucco or siding, it can trap moisture against the home. Over time, this excess moisture can lead to stucco rot, wood decay, and even mold growth. Homes with faulty grading are especially vulnerable in areas with poor drainage, irrigation overspray, or heavy rainfall, as moisture can accumulate undetected.
Beyond moisture concerns, faulty grading also creates an ideal entry point for subterranean termites. These termites travel through mud tubes, which they build along surfaces to maintain the moisture they need to survive. Normally, these tubes can be seen on an exposed foundation, providing a telltale sign of termite activity. However, when the foundation is covered by soil, these tubes remain hidden—allowing termites to invade undetected.