In the past, it was fashionable to make green greenhouses. Special glazed frames were used to cite the frame. This is a durable material, but at the same time fragile. It can break a strong hail or a fallen branch from a tree. In addition, the glass had great weight, so for the greenhouse it was necessary to build a massive foundation. As a result of this, the greenhouse turned out to be expensive, so not all summer residents wanted to have it.