 And you want to make sure that they slope properly. Because you're going to be putting these in sections, you're going to have to sort of plot out that slope, maybe by running a chalk line and snapping a line down the fascia to make sure you maintain the proper angle of these pieces as they get assembled. And then where they join together, you're going to have to use a sealant on all of those seams to make sure they don't leak. So you definitely can do it yourself. It will save you some money. It may not look as perfect as it would if a gutter company did.