The easiest way of building vinyl pergola kits is by attaching it to the side of the house or any other solid structure or garage. The idea is to give more support and stability to the pergola. This, in effect, reduces the number of materials required and less time to construct a pergola, as compared to a free standing pergola. The existing structure can also be a deck for mounting the posts of a pergola, to help it stay upright. An attached pergola can also have a ledger which helps to give support to the rafters of the pergola. When these two components are installed properly, the rest of the job is a cake walk.