Pallet Wood Dangers? Know These Types Before You DIY!

Pallet Wood Dangers? Know These Types Before You DIY!

Using reclaimed pallet wood for DIY projects is a popular and affordable way to create unique furniture and decor. However, not all pallet wood is safe. Understanding the types of pallet wood and their potential hazards is crucial before you start your next project. This guide will help you identify different types of pallets and the risks associated with each.

Identifying Different Types of Pallet Wood

Understanding the markings on a pallet is the first step in determining its safety. These markings, often stamped or branded onto the wood, reveal important information about the pallet’s origin, treatment, and intended use.

Understanding IPPC Markings

The International Plant Protection Convention (IPPC) creates standards for regulating wood packaging in international trade. Pallets treated according to these standards receive a specific stamp.

• IPPC Stamp: This symbol, usually a wheat stalk design, indicates that the pallet has been treated according to IPPC standards to prevent the spread of pests. However, it doesn’t guarantee the pallet is chemical-free.

• Country Code: Two letters indicating the country where the pallet was manufactured or treated (e.g., US for United States, CA for Canada).

• Manufacturer/Treatment Facility Code: A unique code identifying the specific manufacturer or treatment facility.

• Treatment Code: This indicates the type of treatment the pallet received. The most common codes are:

  • HT (Heat Treated): The pallet was heated to a specific core temperature for a set amount of time. This is generally considered a safe treatment method.

  • KD (Kiln Dried): Similar to heat treatment, kiln drying reduces the moisture content of the wood and kills pests. This is also generally safe.

  • MB (Methyl Bromide): This indicates fumigation with methyl bromide, a highly toxic pesticide. Pallets marked with MB should never be used for DIY projects. This pesticide is harmful to humans and the environment.

Reading Other Pallet Markings

Besides the IPPC stamp, other markings might provide clues about the pallet’s use.

• "EUR" Pallets: These pallets meet standards set by the European Pallet Association (EPAL) and are often high-quality and durable. However, it’s still important to check for treatment markings.

• "EPAL" Pallets: Similar to EUR pallets, these also adhere to the EPAL standard.

• Company Logos or Names: A company’s logo might suggest what the pallet was used to transport. Pallets that carried food, beverages, or pharmaceuticals are generally safer than those that carried chemicals or other hazardous materials.

Potential Dangers of Pallet Wood

Beyond chemical treatments, several other dangers are associated with using pallet wood.

Chemical Contamination

This is the most significant concern.

• Spills and Leaks: Pallets used to transport chemicals, paints, or other hazardous materials may have absorbed these substances. Avoid pallets that show signs of staining, discoloration, or strong odors.
• Fungicides and Pesticides: Besides methyl bromide, other chemicals might have been used to treat the wood or protect the cargo.

Biological Contamination

• Mold and Mildew: Pallets stored in damp environments can develop mold and mildew. Avoid pallets with visible mold or a musty smell.
• Bacteria: Pallets can harbor bacteria, especially those that have been exposed to food or other organic materials.

Physical Hazards

• Splinters and Nails: Pallet wood is often rough and can contain splinters, protruding nails, and staples. Always wear gloves and eye protection when handling pallets.
• Structural Integrity: Damaged or weakened pallets may not be suitable for structural projects. Inspect pallets carefully for cracks, breaks, or rot before use.

Types of Pallet Wood to Avoid

While all pallets should be carefully inspected, certain types should be avoided altogether:

1. Pallets Marked with "MB": As mentioned before, these were fumigated with methyl bromide, a highly toxic pesticide.

2. Pallets with Obvious Stains or Smells: Stains, discoloration, or strong chemical odors indicate potential contamination.

3. Pallets Used to Transport Hazardous Materials: Look for markings that suggest the pallet was used to transport chemicals, paints, or other dangerous goods.

4. Pallets with Visible Mold or Rot: These are a health hazard and indicate the wood is structurally unsound.

Safely Using Pallet Wood

Even if a pallet appears safe, taking precautions is always a good idea.

1. Source Your Pallets Carefully: Obtain pallets from reputable sources where you can inquire about their previous use.
2. Thoroughly Inspect the Pallet: Look for markings, stains, smells, and signs of damage or contamination.
3. Clean and Sanitize: Use soap and water to clean the pallet thoroughly. Consider using a bleach solution (diluted bleach!) for extra sanitation.
4. Sand the Wood: Sanding removes splinters and can help remove surface contaminants.
5. Seal the Wood: Applying a sealant or finish can help protect the wood and prevent further contamination. Use a sealant appropriate for its use (outdoor sealant if used outdoors; food-safe if used to hold food).

So, armed with this knowledge about the types of pallet wood and their potential dangers, you can make smarter, safer choices for your next project. Happy building!