I ordered this roll
. It's 75' of about 1/2" thick insulation bonded to a foil backing. The roll was the size of a small water heater and weighed a lot. My UPS guy drug it halfway around my house though the gravel to try and hide it next to my RV gate. It was a PITA to get back into the garage - had to bear hug the box.
Glued denim to denim I got about a 1" thick mat with foil on both sides then I foil taped the edges that set against the roof bows. I think I only used half the roll for the ceiling and will use the rest of it on the walls and maybe under the floor in front.
I used the double sided product in my FJ40 under the front floor mats, front seats and over the hump and it really decreased the heat as well as the noise in the cabin.
My Bikes: '06 F650GS Dakard, '99 R1100S, '97 RMX250, '82 R100S/RS Cafe and '79 TT500
Family Bikes: '11 Sprint GT, '10 Thruxton, '09 G650GS, '07 CRF150RB, '07 F800S, '98 DR350SE, '75 CB400F, '74 TL250, '71 CT90 and '69 CB450
RENT A BIKE @ Spur Cross Cycles