Floor Insulation

I will admit I wasn't convinced that I would need to do something about this. I have insulated the walls and ceiling 1.5In.
And It may not continue to be a problem but wanted everyone's input.
Its about 23degrees outside right now and there is about a 15-17degree difference from the top of a TV tray to the floor of my trailer. I have an indoor/outdoor thermometer that I can use to tell the difference.
I originally planned to at put some insulation under nether in-between the cross beams. Time and money has halted this project.
I currently have to stay in the trailer 3-4 nights a week. I really don't have time to do a lot.
I thought about using something on the inside on the floor. Any thoughts on material and how much?
Garth
And It may not continue to be a problem but wanted everyone's input.
Its about 23degrees outside right now and there is about a 15-17degree difference from the top of a TV tray to the floor of my trailer. I have an indoor/outdoor thermometer that I can use to tell the difference.
I originally planned to at put some insulation under nether in-between the cross beams. Time and money has halted this project.
I currently have to stay in the trailer 3-4 nights a week. I really don't have time to do a lot.
I thought about using something on the inside on the floor. Any thoughts on material and how much?
Garth