I started insulating my van today. I'm using the 3M thinsulate. Also I must preface I am keeping the van simple and won't be framing and skinning the walls and roof. My floor came with basic insulation and a vinyl mat. The reason for not framing or the floor is I spend a lot of time Windsurfing and in the mountains. This is a van for my lifestyle. That all being said I am going to keep it neat and insulated each section and leave the ribs untouched. I will do the same with the roof. With the left over I will try and stuff every crevice I can. What's the general opinion on the ribs.? Cover them or just let them be. See attached image of the start. Opinions would be welcome.