You’ve carefully selected pressure-treated lumber for your next outdoor project because you know it stands up to the elements. But what about those pesky termites? Does pressure-treated wood offer the same protection against these wood-destroying insects?
Let’s dive into the world of termites and pressure-treated lumber to uncover the truth.
Understanding Pressure Treated Lumber
Pressure-treated lumber isn’t just any piece of wood. It undergoes a specialized process where chemical preservatives are forced deep into the wood’s fibers under high pressure. This treatment helps protect the wood from:
- Fungal Decay: The preservatives ward off fungi that cause rot and decay.
- Insect Infestation: Some, but not all, insect infestations are deterred by the treatment.
The key thing to remember is that not all pressure treatment is created equal. Different types of wood and different treatment levels offer varying levels of protection.
Termites and Their Appetite for Wood
Termites are notorious for their wood-eating habits. These tiny insects can cause significant structural damage to homes and other structures if left unchecked. But why do they munch on wood in the first place?
Termites thrive on cellulose, the main component of plant cell walls. Wood is chock-full of cellulose, making it a termite buffet.
So, Will Termites Eat Pressure Treated Lumber?
Here’s the deal: pressure-treated lumber is not entirely termite-proof. While the chemical preservatives in the wood can deter some termites, they don’t guarantee complete protection. Here’s why:
- Termite Species: Some termite species, like subterranean termites, are more aggressive and may still be attracted to pressure-treated wood, especially if it’s in contact with the ground.
- Treatment Levels: Lumber treated for above-ground use (labeled “above ground” or “ground contact”) typically has a lower concentration of preservatives than lumber rated for direct ground contact.
- Age and Exposure: Over time, the effectiveness of the preservatives can diminish, especially with repeated exposure to moisture and weathering. This can make the wood more susceptible to termite attack.
How to Protect Pressure Treated Lumber from Termites
While pressure treatment provides a layer of defense, it’s crucial to take extra steps to safeguard your structures:
- Proper Installation: Keep wood off the ground and use metal flashing or barriers to prevent termites from accessing wood members.
- Regular Inspections: Look for signs of termite activity, such as mud tubes, discarded wings, or wood damage.
- Professional Pest Control: Consider having regular termite inspections and treatments by a qualified pest control professional.
Conclusion
While pressure-treated lumber offers some resistance to termites, it’s not a foolproof solution. Understanding the limitations of pressure treatment and taking preventative measures will help you protect your investment and keep those pesky termites at bay.