Our good friend Preston had metal catwalks built and painted for us to use on our scaffolding for the cathedral facade. It made it sturdy and easier for people to walk around. We were able to have 2 people on the scaffolding and the upper panels, trim and top pieces went on much faster. It is made out of aluminum with holes in it for the weather and grip treads so you don't slip. We even build out platforms for the ends to make the sides easier to reach.