Insulating the garage floor

[TBKHomeworld]

My 2015 Vengeance did not come with insulation in the floor. It was very apparent when it was hot outside and in Texas the heat can get way past 100*F. This resulted in the kiddos being a little warm, especially their feet, in the garage section.

I know I could buy some of the foam board from my neighborhood home improvement store and attach it underneath.

However, I was wondering if anyone had tried applying spray foam insulation to the underside of the floor. I was looking at something that was closed cell and antibacterial in nature. I was hoping maybe someone on this forum has tried it and give me their thoughts.

I did a search and googled but I couldn't see to find anything.

Something like this: https://tigerfoam.com/sprayfoaminsul...-board-ft-kit/

[B and B]

Can you put Corplast on the frame? If so use fiberglass then foil insulation then corplast. This will last longer than foam.

[TBKHomeworld]

Originally Posted by B and B

Can you put Corplast on the frame? If so use fiberglass then foil insulation then corplast. This will last longer than foam.

I could put corplast on about 1/4 of it. The other 3/4 is fuel tank (I certainly don't want to enclose that) and the spare tires. Thus the thought about using foam board which lead me down the thought of spray foam.

[redhooker]

Do not use spray foam if the floor is wood. Any water that finds its way in will not find a way out. The only way it would work would be if you could cover it and protect it, which as you stated before you came out.

I have seen poured in place rubber (such as used on play area surfaces and playgrounds) used with good results in toy haulers. Others have used horse mats. The rubber is applied inside.

[BLOODYBILL]

Originally Posted by TBKHomeworld

My 2015 Vengeance did not come with insulation in the floor. It was very apparent when it was hot outside and in Texas the heat can get way past 100*F. This resulted in the kiddos being a little warm, especially their feet, in the garage section.

I know I could buy some of the foam board from my neighborhood home improvement store and attach it underneath.

However, I was wondering if anyone had tried applying spray foam insulation to the underside of the floor. I was looking at something that was closed cell and antibacterial in nature. I was hoping maybe someone on this forum has tried it and give me their thoughts.

I did a search and googled but I couldn't see to find anything.

Something like this: https://tigerfoam.com/sprayfoaminsul...-board-ft-kit/

hmm something to think about in general with the garage in a toyhauler is if the under side is not insulated hot and cold temps or cool weather, heat loss

[TBKHomeworld]

So my floor has a layered with a rubber top service on top of wood and then a woven fabric material on the very bottom the protects the wood from the elements.

I would prefer not to have to lose space inside the RV itself, thus the desire to put something on the underside. We did throw rugs already which definitely help the feet not feel it as bad but the heat/cold still comes through.

Water was something i had thought of but I had hoped it would prevent water from getting to it, not trap it in. I guess i could see stuff leaking from the op layer through as there are a few through-bolts for the tie downs.

Thanks for the input.

[TBKHomeworld]

For anyone curious I decided to try some foam pads from Harbor Freight for the floor. Laid them all out and covered them with a rug. We will be camping in a few short weeks for an extended stay and I hope to be able to report back then.