Back in the day I used to install vinyl siding. We uesd the identical pump jack staging. Never like that though.They make extensions which are 11' for this particular application.once you get to the top you can add the extension, and add another bracket to the roof, then removethe one which was previously at the top, and along you go. Or if you have a good area to set them up. you can raise the entire height as one piece. The bottom which is 25' and the top(extension) another 11' You need alot of room to raise that however. This past summer my former boss's 17 old son was shocked to death along side his dad, who was not injured while lowering this exact piece.that extension ladder as the back rail is a terrible idea. it gives a false sense of security.
