It's necessary to tighten the roof fabric enough to avoid "hammocks " on the roof  and all tighten one or twice again after a few moths of use .this is important when assembly in cold weather (autumn and winter) because the fabric is stiff then and when we got the sun and warm weather afterwards it will make the fabric "slack" again and need to be re-tighten before next winter .it's the owner responsibility  to take off the snow immediately if not slide off by itself.

enclosure container canopies canopy tent