Selecting outdoor furniture for a rooftop acoustic calculation lab requires careful consideration of durability, soundproofing, and weather resistance. Start by choosing materials like powder-coated aluminum or synthetic wicker, which withstand harsh weather while minimizing noise interference. Opt for heavy, stable designs to reduce vibrations that could skew acoustic measurements. Cushions should be made from quick-drying, mold-resistant fabrics to maintain hygiene and longevity. Additionally, modular furniture allows flexibility for rearranging the lab setup as needed. Finally, ensure all pieces are easy to clean and maintain, as rooftop environments often accumulate dust and debris. By prioritizing these factors, you can create a functional and reliable outdoor lab space.