All ActivityMost RecentMost LikesSolutionsRe: DIY Insulating with spray foam kitI've definitely going to hire a professional to spray foam. Thanks for taking the time to comment. You probably saved me a big mistake. As far as the paint, I think this would be a good additional measure; but right now I'm most concerned with the insulation and sound proofing value of filling the walls.DIY Insulating with spray foam kitHas anyone had any experience with Touch N Seal or Foam it Green (or any other)spray foam kits? Do you think you can get a professional result with a DIY product like this? Any personal experience stories would be much recommended. ThanksRe: Any Experience With Insulation?No there is no sheeting. Here are a few pics if you're interested. http://www.flickr.com/photos/63401930@N05/ Maybe 3 inches would be best. I think I might make this my plan.Re: Any Experience With Insulation?Spike99 thanks for taking the time to post all of your comments. This is really helpful!! I've been so busy working to pay for all these new expenditures that I haven't had the time to log into the site. It seems that most people recommend 3 to 4 inches of spray foam, however, a few youtube videos show people spraying 1 to 2 inches for trucks that are built for refrigeration. I'm not sure how this would be adequate for a refrigeration unit if not for an RV. Our truck was used previously as a moving truck, so it has boards screwed into the walls. I was considering fixing plywood directly to the boards. This would provide 1 and 3/4 inches of foam behind the plywood. Not enough??? If not, then I guess we would want to remove all boards and attach vertical beams to allow more space within the walls. We're more concerned about losing the width of our living space than we are with the extra money, but temperature comfort will come first. We want to find the point where the difference will be most noticeable, if not perfect. It's hard for me to imagine our box truck catching fire in a way that wasn't obvious for us to immediately get out. But fire proof foam certainly sounds like an easy precaution. Pianotuna, do you know any advisable fire proof foam?Any Experience With Insulation?I have recently bought a Ford E450 Box Truck which I will be converting into an RV. I have some work ahead of me! My first job will be to insulate, and I am thinking about using closed cell Polyurethane foam for the walls. For both cost and space reasons, I would like to put no more foam than necessary into the walls. From surfing the web, it seems like 1 to 2 inches might be sufficient. Does anyone have experience with this type of insulation? How much of a difference do you think 2 inches will make as opposed to 1? Also, does anyone know if it is safe to spray the foam directly against the metal outsides of the box?