Adding weight to a garage door & the power of the opener

Looking to add a little insulation on my garage door just to help even in the slightest with the heat. The wifey has me building her a gym in there (despite the fact that we own a gym, but that's a story for another day) and a little bit of cool will go a long way. I was told that adding even the slightest bit of weight can screw up some things. Is there an adjustment on the opener that I can tinker with? And will this affect the springs in anyway?

The insulation that I'm putting is that shiny bubble wrap looking stuff. I think I can make it look pretty clean and neat with that stuff so it won't look terrible


And....as always.....











No pics, assholes, lol