We are setting out to build a 7m x 4m lean-to greenhouse, with timber frame and 4mm polycarbonate walls and roof, which will come off our garden fence (very sturdy, 6ft high, all posts concreted in). We want to put a sliding door on each end, but I'm having difficulty sourcing a sliding door kit that can be used outside... Anyone got any tips (on the construction or the doors!)
