What are you talking about? I know it's possible to roof a house with slate tiles, but few houses have that. They are scarce enough that the cost would be prohibitive. There are man-made materials that perform as well for a lower cost.
Ok, you are inquiring about details for a roof on your own house. That is going to depend on where the house is and who is available to work there. So you just have to find a roofing contractor in your area and present your questions to him.
Yeah, this itself want to know. Actually was planning this slate roof for my house. Will it be good for my home?