Another Moto van question?

Yeah I did when I had mine.

Only have dynamat around the cargo area at the moment to limit road noise, but I plan on lining insulation in the cavities then carpeting in the near future

Do you mean for temperature of sound? I install sound installation so people cannot hear the children in the back.

Well yeah, the road noise is really loud through the back of the van since its just the bare body panels, so dynamat has muffled that a bit, temperature isn't a real concern.

And I use a good quality chloroform, keeps the kids quiet.

I did a sound dampener layer. Then a radiant barrier of Reflectix. You can get it at lowes/home depot and works best if you can do double layers with air in between. Reflectix doesn't have a high R valve but with a black van I would worry more about that radiant heat.

When I did my sprinter last year, there was so many opinions on insulation what to use and not, I said screw it, just put down a heavy rubber floor, sound dampened and reflectix. Works great.

I'm about to do mine. Will do the Dynamat or equivalent and not as concerned about the temperature.

If it's rattling on the road, larger diameter comfort tires will make the biggest difference. You want as tall of a sidewall as possible as that cushions the bounces, and a larger diameter tire has better rollover ability so it won't feel like every seam in the pavement is a curb. From there, dynamat or similar will take the resonance out the panels. Don't use spray foam for large areas as it will get brittle over time and drop a bunch of crumbs into the bottom parts of the panel that will collect moisture and promote rust.

I did mine with dynamite and this silver insulation from Home Depot. My one regret was not insulting the floor enough, the cold comes right up in the winter months.

Been working on insulating mine for a few weeks now. With the kids back in school, I don't have as much time to mess with it.

Mine was insulated with spray foam insulation.

I think the best insulation is the thinsulate. The reflectrix bubble wrap foil stuff doesn't work at all if it's pressed up against anything... it needs an air barrier in order for it to work.

Definitely insulate as best you can, it makes a huge difference between driving a resonating steel drum or a comfortable ride that you can actually talk in and listen to music. Also really helps in the summer and winter. Empty vans are either ovens or ice chests if they aren’t insulated. You can do it cheap with window flashing, fiberglass insulation and a reflective barrier like you would wrap air ducts with. Like the silver insulation in Joes pics a couple posts up.

I bought fiberglass insulation and put it trash bags and stuffed it everywhere I could. Also insulated the wall we put in and sound deadened everywhere else. It's pretty quiet now but I think most of the noise we still have is from the driver/passenger area.

My 05 chevy express extended is completely bare stock, no insulation, no wall, just two captain seats and I don't have any problems with noise. I can listen to music fine and I've even played podcasts off my phone speaker and could hear everything. Does get a little cold at night though