Two styles of side curtain ventilation systems are available. Both incorporate a sturdy cladding rail bracketed to the hoops along the side of the structure with netting permanently clad between that and the floor, and an opening polythene curtain. The method by which the curtain opens and closes is the main differential between the two types:

Roll-up Side Curtains These systems incorporate a net-reinforced polythene curtain. Better suited for higher sides structures and where neat appearance is important, as the polythene curtain does not collect on the floor. The top edge of the curtain is permanently clad to the side rail, and the bottom edge rolled around a special aluminium roller tube. Standard systems are operated by a manual gearbox attached to one end. Wind-Down Side Curtains These systems use a standard polythene curtain, and are best suited for simple cost-sensitive structures. The bottom edge of the curtain is permanently fixed at floor level - the upper edge is raised and lowered by a system of wires & pulleys operated by a winch at one end. The curtain collects on the floor when open, so always provides ground level draught proofing whilst allowing higher level airflow.

 

Doors & Louvres Some customers will wish to make their own simple gable end closures.  For those that don’t, we can supply a wide variety of doors & louvre vents, all manufactured from 65x40mm PAR tanalith treated timber using special jointing plates to ensure consistent high quality frames. Various combinations of single or double hinged / sliding doors, with twin / quadruple louvre vents are possible – dependant upon tunnel width.