Yes, Polands Kopulak Sandstone can be used outdoors. Sandstone is a durable and weather-resistant material, making it suitable for various outdoor applications such as paving, landscaping, garden walls, outdoor cladding, and facades. The Kopulak Sandstone from Poland is known for its robustness and natural beauty, making it a popular choice for both residential and commercial outdoor projects. However, it is important to note that proper sealing and maintenance may be required to enhance its longevity and protect it from harsh weather conditions.