The Effectiveness of Keruing Treated with Preservatives

What happens when you take Keruing hardwood, treat it with preservative, and test it against Southeast Asia's most aggressive termites? You get a timber that doesn't just resist decay but earns a Class 1 durability rating.

Buana Keruing: Treated and Tested

As a Keruing specialized manufacture in Indonesia, we do not guess but we verify. That is why we commissioned an external laboratory to test our treated Keruing against one of the most destructive subterranean termite species in Southeast Asia: Coptotermes curvignathus.

The goal was simple. We wanted to understand exactly how preservatives perform when applied to Keruing and to answer the most important question asked by clients, what durability class does treated Keruing actually belong to?

Trusted Standard and Two Data Points

The test followed the Japanese Industrial Standard (JIS) 1571:2004 for over three weeks. Researchers compared four different samples. These included pinewood as a control unit, untreated Keruing, untreated Bangkirai (Yellow Balau), and preservative-treated Keruing. The termites were not given an easy way out. They had to feed or die trying. Two measurements decided the outcome: termite mortality rate and timber weight loss.