When it comes to choosing a bench for your garden, patio, or public park, one of the biggest concerns is how it will hold up against insects—especially termites. These silent destroyers can turn a beautiful wooden bench into a hollow shell in just a few seasons. So, how do benches fare, and what can you do to protect them? Let’s break it down by material.
First, solid wood benches are the most vulnerable. Softwoods like pine or fir are a termite’s favorite snack. Without chemical treatment, you can expect visible damage within one to three years in humid climates. However, pressure-treated lumber—infused with preservatives under high pressure—offers strong resistance. Most modern treated wood benches come with a warranty against termite damage for 10 to 20 years. Cedar and redwood are naturally resistant to termites because of their natural oils, though they are not completely immune. Always check for a “ground contact” rating if the bench sits directly on soil.
Metal benches, such as those made of aluminum or wrought iron, are entirely immune to termites. Insects cannot digest or burrow into metal. The only risk here is rust or corrosion, which can weaken the structure over time, but that has nothing to do with bugs. A high-quality powder-coated steel bench will outlast any wooden counterpart in termite-prone areas.
Plastic and composite benches are also excellent choices. High-density polyethylene (HDPE) and recycled plastic lumber contain no cellulose, so termites have nothing to eat. Composite materials, which blend wood fibers with plastic, are less attractive to termites than pure wood, but some brands add biocides for extra insurance. In my experience, a well-made composite bench can last 20 years without a single termite hole.
Concrete and stone benches are, of course, completely termite-proof. But they have their own drawbacks—weight, cost, and lack of comfort.
Now, for existing wooden benches: regular inspection is key. Look for mud tubes (termite highways) on legs or the underside. If you find signs of termites, you can apply a borate-based wood treatment (like Bora-Care) that kills termites on contact and prevents future infestations. I recommend treating any untreated wood bench every two years, especially if it sits in a shady, damp spot.
In short: If you live in a termite-heavy region, skip raw softwood and go for treated lumber, metal, or composite. Your bench will stand firm against insect damage for decades, and you’ll save yourself a lot of headache (and repair costs). Do you have a specific bench material in mind? I can give you more tailored advice.