How to Store Pressure Treated Timber Outdoors: Ensure Longevity and Durability

How to Store Pressure Treated Timber Outdoors: Ensure Longevity and Durability

Paul Makin |

Understanding Pressure Treated Timber and Its Storage Needs

Keeping pressure treated timber in good shape for years takes more than just stacking it outside. If stored improperly, even the strongest wood can decay or warp. After receiving your delivery, getting your storage right means your investment lasts longer and stays ready for your DIY project. Avoid common mistakes like leaving wood on the ground or exposing it to direct heat/sunlight without cover. This guide shares some tips to help you store pressure treated timber so it remains strong for the long haul.

Pressure treated timber is wood that’s been infused with chemicals to fight pests, rot, and moisture. This process makes the wood much more durable outdoors. When stored properly, pressure treated wood can last many years. But if you don’t take care of it, exposure to the elements speeds up bending, warping or even decay.

Climate plays a big role. Humid areas or places with heavy rain and then direct sunlight need extra precaution. Different wood types and treatment levels also influence how you should store it. For example, plywood should always be stored dry.

Selecting the Ideal Storage Location

Choosing a Well-Ventilated Area

Good airflow is key. Without it, trapped moisture can gather, which can cause mould and rot. Look for open sheds or shaded, breezy corners of your garden. Avoid areas surrounded by dense bushes or walls that block wind. Proper ventilation is key.

Avoiding Ground Contact

Sitting your timber directly on soil or uneven grass or gravel can quickly leads to issues. Always elevate the timber off the ground using pallets, bricks, or even pressure treated wood sections.

Protecting from Sun and Rain

You can cover your stacked timber with weatherproof tarporlines or in a garage or shed that block direct sunlight and rain. Make sure covers are loose enough to let moisture escape.

Preparing Your Storage Setup

Elevating the Timber
Place your timber on sturdy supports like pallets, pressure-treated timber, battens or bricks. This keeps it above ground and allows air to circulate around it. Elevating prevents water from pooling and reduces trapped moisture—key for keeping the wood dry.

Covering the Wood Properly

Consider covering your timber with heavy-duty, waterproof tarps or inside a shed or garage to shelter from weather changes. Ensure the covers are tight enough not to blow away but loose enough to allow air circulation. Adding a slight slope helps rainwater run off and keeps the cover dry underneath.

Organising for Easy Access

Stack your timber logically. Group pieces by size or type, making your workflow smoother. Proper stacking means less damage when you handle the wood later. Use spacers between layers to promote air flow and reduce warping.

Best Practices for Storing Pressure Treated Timber

Stacking Techniques
Stack your wood flat, keeping it on a level surface. Use spacers between layers to ensure air flows freely and weight it down. Don’t lean or pile the wood unevenly — this can warp your project pieces. Always check the levelness regularly.

Conclusion

Proper storage of pressure treated timber outdoors isn’t complicated but pays off in longer-lasting, better-quality wood. Always keep your timber elevated, weighted and covered, and in a well-ventilated location. Regular checks and minor adjustments during different seasons help avoid damage and decay. Protecting your investment with simple steps ensures your wood remains strong and durable, ready for your build. Keep these tips in mind, and your pressure treated timber will stand the test of time.