Will update pictures when finished but this is so easy, you can get the majority up in a day- definitely a one day project with two people - one caulking and one placing. I didnt use a grid but applied directly to the ceiling using a basic caulk. The panels are very light. I also didnt trim the sides of the panels, but where they overlapped in the corners, I added (hammered in) a 1 metal rounded furniture tack which hid the seams quite well. Would highly recommend for a DIY-er, watch the YouTube videos with tips and tricks- they are valuable. I found it easier to work with smaller squeeze tubes of caulk instead of a gun because you could add small dabs more easily and some of the parts you need to glue up are pretty narrow. Basic caulk works just as well as the fancy kind, but you definitely do want one labeled as quick-dry for PVCvinyl.