I need to clean and repaint the back wall of the house.
The wall is about 4 metres high and 2 metres off the ground. It's 6 metres wide.
http://i43.tinypic.com/29c1fmr.jpg

Below the wall is clear plastic roofing that cannot be walked on or ladders rested on. I need to put some scaffolding up somehow. Preferably using whatever equipment I have lying around!