Does a circular stair take more room than a straight stair? When do I contact Artistic Stairs? Who installs my new stair? How do I get the curved staircase in my home? When are railings scheduled & installed? Where do you set up work in the home? How much dust is there? Who stains or paints the rails? Should the wood components be sent in advance for pre-finishing? Do the iron spindles come pre-finished?