Heat Treatment vs Kiln Dried

There are subtle differences between the terms heat-treated (HT) and Kiln-dried (KD). This information is important for HT ISPM 15 regulations. The HT ISPM 15 standard is in place to stop the spread of pests through international trade. Pests travel from country to country in the wooden pallets and crates used to transfer goods. The key to identifying how HT and KD differ is to understand the two processes and the main aim of each one.

KD

Used to reduce the moisture content of lumber in a controlled environment (a kiln, for example) to reduce warping. Used mainly in the wood furniture and flooring industries. Depending on the final use of the product will determine it's effectiveness on the chosen material. See Kiln Drying Services

HT

Essentially, pasteurization. The goal is to heat a product to a point of partial sterilization in order to eradicate living organisms (remember Louis Pasteur?). See Heat Treating and Fumigation. It’s also required that the HT stamp (also known as the wheat stamp) is clearly visible should your shipment be inspected at a border crossing, and is missing a wheat stamp or one that is not legible, the whole shipment will likely be held. This will no doubt result in late delivery.

Other advantages of heat treatment may include:

• The reduction of moisture and weight to offer significant costs savings
• Stronger, more durable wood