May I suggest you type your question into google.com and read what people have experienced with this monster - it isn't good!

There is a local floral shop here that has been growing an evergreen ivy on their wall for several years. It's about 12' by 10' area. It hasn't gone beyond that wall because it's maintained all the time and I imagine they use it quite a bit in their designs.

The types ivy that will cling by means of aerial rootlets will eventually scar and damage your chimney. Also, the common ivy often found to have once been used in that type of application, English ivy, has now been listed as a noxious weed by the Washington State Noxious Weed Control Board.