Wooden outdoor sofas add natural charm to any patio or garden, but warping can ruin their appearance and functionality. To prevent this common issue, follow these expert-backed tips:

1. Choose the Right Wood: Opt for naturally durable woods like teak, cedar, or redwood, which resist moisture and warping better than softer varieties.

2. Apply a Protective Finish: Regularly treat the wood with a high-quality sealant or outdoor-rated varnish to create a moisture barrier. Reapply every 1-2 years.

3. Ensure Proper Drainage: Design or position your sofa to allow water to run off easily. Avoid flat surfaces where water can pool.

4. Use Proper Storage: During extreme weather or off-seasons, store the sofa indoors or use a waterproof cover to shield it from excess moisture.

5. Maintain Even Sun Exposure: Rotate cushions and reposition the sofa periodically to prevent uneven drying, which can lead to warping.

6. Check for Proper Construction: Ensure the sofa frame uses kiln-dried wood and features adequate ventilation gaps to allow airflow.

By combining these preventive measures with regular inspections, your wooden outdoor sofa can maintain its shape and beauty for years. Remember that some natural movement in wood is normal, but proper care minimizes excessive warping.