Anyone insulate their TH floor?

Simple....Carpet, space heater. Done

Several sheets of Corroplast, fitted to underside of the TH would do wonders, and keep most moisture away from the bottom of the floor/rv etc, while providing a dead air space also.

I have 1/8" thick plyable plastic to be fitted to the underside of the TH etc.

Tia,
Don

Removed the cardboard, moved all electrical, water, gas, drain lines at least 2 inches above the bottom of my steel I-beam frame. 2-inch styrofoam with tape, then pole building steel roofing screwed to the bottom of I-Beam with self tapers. Dropped the remote thermostat sensor thru kitchen cabinet to monitor temps in my new basement. Unbelievably warmer. We will snowmobile this Winter in our 3950 Cyclone....but still having probs with the digital thermostat and the wide,wide range of temps. Dometic has NO clue how to solve the problems.
As for SpencerRB. Cut 3/4 inch styrofoam panels and put them on windows from the inside. Helps with both the heat and A/C and the public can NOT see it, but we have the mirrored windows. A little "dark" inside, though.

As mentioned in the other thread, I've insulated the front half of our Voltage garage. Used 2" thick foam insulation board from Lowes. Fairly easy to cut squares to fit into the framework under the floor. Sealed up the small gaps/seams with expanding foam and/or foil tape. The back half is a little more challenging due to the fuel tanks needing to be dropped to access the bottom of the floor. Since we full-time, this is still pending until we stay at a campground where I can do the work.

We were in Breckenridge, CO this winter for 3 months and it made quite a difference, along with some other insulating work on the pipes, etc.

During the summer, the floor insulation has been less on an issue. Our biggest problem has been keeping the heat blocked from the windows. Heat transfer through the massive amount of glass, plus no garage A/C (just 2 vents from main ducted unit) has been a challenge but nothing too bad. Planning to add exterior magnetic sun shades to the windows plus potentially adding a 3rd A/C down the road.

Spray foam looks pretty ugly but would not need a air space. There is a waterproof foam board but would probably need a air space between the floor and the board.

i know the spray foam works great in my house. couldnt hurt to give it a look for the mobile house.

honda4us wrote:
Spray foam, its mositure resistant if the right product is used. See you-tube for more info.

Interesting. Sounds like a good idea. I'll have to look into that.

Spray foam, its mositure resistant if the right product is used. See you-tube for more info.

Closed cell spray foam.

No, the floor is not insulated, which is why I'm even asking. I would think that insulating the underside would add considerable help during cold weather and in the summer heat. No, there area no vents in the garage, but thats to be expected. Garages were mainly designed for vehicles not people but its been quickly found that when the toys stay home or are outside, this extra space is a great "extra room". I would think hard foam insulation would be better than soft batts but I'm not sure I'm going to hold anything up against the underside without letting moisture or debris from getting in between and causing issues.