Verandas and what parks allow
Glass balustrades
Toughened or laminated glass panels in aluminium or uPVC posts, 1,100 mm high like any other balustrade. Frameless clamp systems look the cleanest but cost the most; framed panels are easier to replace if one is damaged. By the sea, glass needs washing every few weeks to stay clear.
Roofs and canopies
A canopy turns a deck into a veranda you can use in the rain, but it is the part parks are most careful about: it raises the height of the structure, changes how the caravan looks from the road, and on some sites it counts towards the fire separation rules in a way an open deck does not. Many parks allow a canopy up to a set height and a set depth; some allow none. Always get the park's answer in writing before the installer draws it.
Enclosing a veranda
Sliding glass panels or screens under a canopy make a sheltered room, but a fully enclosed veranda can be treated by the park or the council as an extension of the caravan, with knock-on questions about the site licence and the caravan's legal definition. Most installers will only enclose two sides, or fit removable screens, for that reason.
Wind
A roof catches wind like a sail. Installers on exposed coastal parks use heavier posts and fix the frame to the deck subframe and the ground, not to the caravan, which should never carry the load of a canopy.