COMPLETED PHOTOS PENDING: Create a higher quality, lower maintenance, functional deck and arbor system which responds to changes in weather and sun/shade, and requires fewer columns which impair views and furniture layouts. We replaced the builder grade PTP wood deck with a welded steel deck and stairs, plus aluminum Arcadia brand high tech louvered pergola with rain gutters and tilt mechanism tied into the owner's home automation system. Steel construction allows for a longer floor span without intermediate columns, a solid concrete/tile floor. wood ceiling at terrace level and will remain beautiful for years.