I had an aluminun and steel gazebo for 15 years. The roof leaked, the poles were splitting and it needed to be replaced. I purchased this with assembly and am very pleased. The unit is super sturdy, does not leak. It has withstood several windstorms with 40 to 70 MPH wind gusts. We had a heavy snowfall over the winter and it did not bend the roof panels and it still does not leak. The assembly was worth it and well built