I have a 14 year old double wide trailer. The insulation in the ceiling was to suppose to be 12″ blown in. While having a metal roof installed I was able to place my hand inside the roof vents. There was only about 1″ laying in there.
I would like to have this re-done. I have been told that there is a type of blown insulation with a glue content added. This is supposed to keep it from settling.
What are your suggestions or comments about this type of insulation?
Sounds like you have several issues to deal with. First, most of the trailers and RV’s I have had experience had at most about 3″ of insulation in the attics and walls, so if you were told yours would have 12″ I would say that was an option and you should have documentation that you paid extra for this. If that is true, I would be calling the dealer and demanding to have them pay to re-insulate since you clearly did not get what was advertised or told you would get.
My second concern is space. When we build a conventional house there is either an attic space or large roof trusses that create a space above the ceiling for wiring, ductwork, and insulation. There is always some kind of attic trap door to allow access to this area which usually has several feet of space for repairs, which makes it easy to blow in more insulation if needed. However, all of the trailer-type construction I have seen had only a few inches of access space above the ceiling which would make it impossible to access for adding more insulation. Although double-wide construction should follow more traditional home construction methods, I would not be surprised if there is limited space above the ceiling to access. This may make it very difficult to add more insulation unless added holes are installed to reach areas not near access doors or vents.
Most of the blown-in insulation for attics is “fluffed” by the blower before it goes down the pipe and into the attic so I have not heard that there is a need to add a “glue” to this. They do add water to blown in cellulose insulation for walls which makes it “stick” between the studs and dry before the drywall is added, but I have not heard of anyone doing this for attic insulation. What I would be more concerned about is getting good and uniform insulation coverage over the entire ceiling area, and for that I think you will need a professional installer. I would ask how they will guarantee to reach all areas in this confined space and you can say you are going to rent a thermal scanner the next winter to scan the ceiling for cold areas that may not be properly insulated, which should convince the installer to take extra care. As the say, out of sight, out of mind.