Many greenhouses have unfortunately suffered due to the appalling weather.
If you require a quotes for your insurance company please send a photograph of the uprights so that we can ascertain the name of the greenhouse manufacturer.
If you intend to use the greenhouse for ground level plants and large pot plants on the floor you will not need staging. For most people staging (The wide shelving at waist height) and shelving (smaller width shelves at shoulder height or above) are a must. Staging provides a surface at a useful height and makes potting, watering, pricking out and all the other greenhouse tasks much easier.
Greenhouses come in many shapes and sizes, with a myriad of choices in shape, material, glazing, fittings, vents, and many other options. On this site you will find a wide selection of wooden (generally cedar), aluminium and lean to greenhouses from a variety of greenhouse manufacturers including...
It may be cold but clean the glass to allow as much light as possible in.
Remove all plant debris.
Clean the frame and staging with a greenhouse disinfectant, or hot soapy water to prevent diseases. If the greenhouse is to be empty over the winter leave this job till spring.
Open the vents (an automatic roof vent will do this) on a sunny day to encourage air circulation and to discouage bugs.
Insulate your greenhouse with bubblewrap. Do the vents separately so that they can still open.
Take root cuttings of perrenials with thick fleshy roots, oriental poppies and sea holly.
Tidy up pots and seed trays