Measure the distance between the floor joists.
Shed floor insulation.
The best way to insulate a shed floor is in the building phase of the shed.
Access to the underside of the floor though affects the options available for insulating it.
Insulating the walls would be simple because they were exposed to the inside and insulation batting could easily be squished between the studs.
There is a nice video below detailing how to do this easily.
Insulating the shed floor will help create a thermal barrier between the inside and outside air spaces.
Budget ability and experience also.
Is an effective but more expensive solution for floor insulation in your shed.
Properly insulating a shed requires you to.
It can also make it more versatile allowing you to store plants or use it as a rec room.
I have a friend who lifted his unfinished shed to permit the floor to be insulated then lowered it back down.
I recommend foam boards as they can be cut to fit between the floor joists easily.
How to insulate a shed.
Figuring out how to insulate the shed floor one of the most challenging steps to the project was figuring out how i would insulate the shed floor.
One of the drawbacks for spray foam is that you need backing for it to adhere to the surface.
Warm air rises and so naturally the walls and the roof are the first areas to consider.
If you are installing insulation on a pre built shed you cannot simply drill a hole in the floor and pump it full of spray foam.
This will be according to your shed plans.