When driving on the highway the floorboard didn’t get too hot; but when driving off road it got very warm, so I decided to insulate the floor of my JK.
I used 4 rolls of Thermo-Tec #14620 which is 60 square feet of material to insulate the floor of my 2008 Jeep Wrangler Unlimited Rubicon. This material appears to have very good specifications when compared to similar products.
Last year I insulated the inside of the hard top. Here is that write-up:
Take the recovery gear, seats & carpet out of Jeep. Then clean the metal from all mud & stuff.
I measured then cut the insulation into small pieces for easy installation. I used small pieces about 6” & 12”. The stuff is easy to cut w/ razor blade tool. Then peal the backing on and stick it on the metal surface.
Then use a roller to smash the insulation onto the metal. Then cut out the seat & other holes in the insulation.
Then put the carpet back in. Notice the slight ridge in middle picture; that is where the front drive shaft broke and banged against the floor of the Jeep; but that is another story.
Total cost $200.00. I got this from Auto Barn. I don’t work for, nor get any remuneration from, Auto Barn or Thermo-Tec.
I tested this 3 weeks ago in Death Valley (only 92F – so not that good of a test); but it really helped keep the heat on the feet down to a manageable level.
An added bonus is that the Jeep is now very quiet, I can even hear the stock stereo while on the highway; even over the whine of the tires.