If you're considering using cedar for outdoor structures or even as a landscaping material, you might be wondering, "Will termites eat cedar?" Cedar, with its distinct aroma and rich color, is indeed a popular choice, but its resistance to termites is a common misconception. Let's delve into the relationship between cedar and termites to understand if cedar is truly a safe choice.
Cedar, renowned for its durability and attractive aesthetic, is often perceived as a termite-resistant material. However, this notion stems primarily from the fact that termites tend to prefer other, less resistant woods like pine or fir. So, why do people believe that cedar is termite-proof?
Cedar's Natural Defenses
Cedar naturally contains substances called phenols and tannins that give it a distinctive smell and taste. These compounds not only deter some pests but also act as natural preservatives, making cedar less appealing to termites.
Interestingly, while termites tend to avoid untreated cedar, their behavior changes when cedar is treated with certain preservatives or undergoes pressure treatment. This process removes the natural oils and replaces them with chemicals that may actually attract termites.
Pressure-Treated Cedar
Pressure-treated cedar, commonly used in construction due to its durability and longevity, can be less resistant to termites once the treatment replaces the natural oils. The preservatives used in this process can leak out over time, leaving the wood susceptible to termite damage.
Moreover, the gap created between the pressure-treated cedar and adjacent materials can form an attractive entry point for termites if the treated cedar comes into contact with other woods. Always ensure treated cedar is separated from non-treated materials using metal or plastic flashing.
Cedar species and Termite Resistance
Different cedar species have varying levels of resistance to termites. Western Red Cedar, for instance, tends to be more resistant due to its high content of phenols and tannins. On the other hand, Eastern Red Cedar has a lower concentration of these compounds, making it less resistant to termites.
Termite resistance in cedar largely depends on the Cedar Bureau of Canada's grading. "Clear Cedar" or "C & Better" grades tend to have a higher concentration of resistant phenols, making them more termite-resistant than "Select Tight Knot" or "Standard & Better" grades.
Factors Affecting Termite Activity on Cedar
Besides the type and treatment of cedar, other conditions influence termite activity. Moisture is a crucial factor; termites thrive in damp environments. Poorly ventilated and moisture-prone cedar structures are more susceptible to termite infestations, regardless of their resistance to the insects.
Additionally, proximity to other termite attractants can also draw termites to cedar. Wood waste, stumps, or even wood-to-soil contact can act as a magnet, putting your cedar structure at risk.
Preventative Measures to Protect Cedar
To protect your cedar structures from termites, ensure proper ventilation and avoid soil-to-wood contact. Use non-organic materials like plastic or metal for mudsills and ensure a proper beespace (1/8 inch) between the wood and the ground.
Maintain a soil-wood barrier of at least 4 inches and keep the area around your cedar structure well-maintained and termite-free. Regular termite inspections can also help catch infestations early, minimizing damage to your cedar structures.
Baiting and Other Control Measures
Termite baiting systems can be an effective way to prevent termite infestations. These systems use a combination of attractants and toxicants to lure and eliminate termites before they reach your cedar structures.
Another approach is applying termiticides to the perimeter of your property or around potential entry points. However, such treatments should be carried out by a professional to ensure their safety and effectiveness.
In conclusion, while cedar's natural resistance to termites is well-known, it doesn't mean that cedar is entirely termite-proof. Careful selection, proper maintenance, and regular inspections are necessary to protect your cedar structures from termite damage. Always remember: an ounce of prevention is worth a pound of cure. Make cedar a part of your landscape, not termites' dinner.