How do you put up a greenhouse?

A greenhouse is essentially a large multiple window frame. Once the perimeter supports are in place and the roof beams attached, metal lattices (steel or aluminum) are added to the roof and all or most of the sides. Then separate panes of glass are mounted in each one of the lattice holes. A wide lip along the insides of the roof rows keeps the panes from falling through.

Some greenhouses will need extra reinforcement for the roof panes, usually in the form of stronger, wider dividers between the rows.