I'm working with a veranda roof made out of corrugated polycarbonate similar to this stuff... corrugated plastic sheet. Is there anyway of working with this material from underneath?
The roof I'm working with is enclosed on three sides by high brick walls, the only way remove the panels seems to be to climb onto the roof, crawl several meters along the top and unscrew from above.
The first question is how did anyone fit it in the first place? All the instructions (plus a few youtube videos) show the panels been screwed down by a builder working from the sides, none of them show anyone being foolish enough to climb on top - the plastic is just too thin to support anyone.
Even if I were to use crawling boards to spread the load over the panels, I'm not sure the wooden frame underneath would take my weight (80kgs)
Second question, Assuming I manage to remove the old panels (somehow) are there any fittings manufactured that would allow me to attach new panels from underneath? Maybe a threaded nut fastener that could be attached to the top (outside), and then a threaded bolt inserted from the underside? Really don't fancy climbing on top, but the limited access from the sides doesn't seem to leave any options.