Glass greenhouses
Many greenhouse vendors sell both plastic and glass greenhouses.
Each material has its own advantages. For some, it is simply a matter
of aesthetics: many find that glass simply looks more elegant.
Glass greenhouses also have an edge in regards to fire safety. Glass
will not catch fire. It is possible, however, for some of the plastic
used in other greenhouses to be flammable.
Glass greenhouses can also be cleaner. They can be hermetically sealed
against moisture endured. In addition, unlike polycarbonate twin wall
plastic, glass will not turn yellow from the sun.