When it comes to outdoor furniture, proper water drainage is crucial for maintaining the longevity and comfort of sofa cushions. The ideal slope for outdoor sofa cushions to shed water effectively is typically between 5 to 10 degrees. This slight incline allows rainwater to run off naturally without pooling, preventing mold, mildew, and fabric damage.

A steeper angle might compromise seating comfort, while a flatter surface could trap moisture. For optimal results, consider cushions with channels or grooves to guide water away. Additionally, choosing quick-drying, weather-resistant materials like Sunbrella or polyester blends enhances performance.

Pro Tip: Test the slope by sprinkling water on the cushion—if it rolls off smoothly, you’ve nailed it! Regularly fluffing and storing cushions during heavy rain further extends their lifespan.