[rammstein]

I am looking at a house (ok, its under contract already) and I hadn't realized that it had no (or very poor) insulation under a portion of the roof that is flat. On the interior, there are lovely hardwood exposed beams. The EASY way to insulate would be to roll out nice thick insulation and put drywall up over the beams. Great for energy, bad for ruining the look I liked. For sure, I would benefit from an elastomeric paint- that would help considerably. But I wonder if a product exists that lets you insulate a flat roof from OUTSIDE (its flat but does have maybe a 5 degree pitch). Its just a thought and I am googling now but I figured maybe someone here knows something about this or has other good ideas.