When you plan to install the panels on walls and ceiling, it is recommended to begin with the ceiling first though it can be installed later as well. Firstly, you need to decide the panel span between the ceiling trusses. It should be 24” and if you want your building to be insulated then installing a 6 Mil Poly sheeting is vital as it will act as a vapor barrier for ceiling and walls before panel installation process. Secondly, before you install the pvc wall ceiling panels , make sure that the product and project meet all the building codes applicable in your area. It is necessary to abide by the rules. Installation process: Installation process of the PVC building materials has to be followed step by step so panels can be installed in an organized and systematic manner. First step is to make sure that the panels should run perpendicular to the furring strips and ceiling trusses. Read more - https://delpro1238.com/blog/guide-to-installing-delpro...