If you've ever wanted a spiral staircase for your home then you should first look at the option of buying a spiral staircase kit. If you are a gentle man then you might be able to buy one yourself, but they are known to be one of the most difficult things to build because of all the dimensions. Many people either opt to go with a kit, or find some pre-made kits to buy and put together. Even those who consider themselves to be good with tools and wood can sometimes find themselves in over their head. There are many forms of kits, depending on what type of staircase you want. Iron and metal kits are typically easier to put together than wood, at least than my experience.
You can buy kits for indoors or outdoors. Outdoor spiral stairs are typically going to be harsher material just because they have to deal with the outside elements like weather and the sun beating down constantly. Iron, metal, etc. are going to be used for those situations. Wood is used sometimes for outdoors, but not as often as they are for indoors. Typically you'll find better designed staircases in wood because they were meant for indoors and aesthetically will look more pleasant.
Once you have your kit picked out, bought and assembled you're not done however. One thing new owners neglect sometimes is the care and maintenance of their stairs. They need to be cleaned regularly and well. Outdoor iron and metal staircases even though they do not need to look as new and bright as one for the inside of your home still need to be taken care of. Rust can occur and will make the stairs unsafe. They need to meet guidelines because just like any other part of your houses they will need to pass inspection if it comes to it.
You can usually use a mild cleaner and rag to clean both indoor and outdoor. Be careful not to use too harsh of a material because it can cause irreparable damage to your stairs.
No matter what type of spiral staircase kits you choose, take your time and make sure that you'll be able to do it yourself, or you might need to hire someone who has a speciality in the area. Do not be accused if this is the case because like I said before, putting together stairs is one of the toughest smaller constructions projects I've ever come across.