DIY Shed AsktheBuilder Foam Insulation Floor Joists Part 1 Video
Tim Carter demonstrates how to install foam insulation in floor joists for a DIY shed. To prevent the foam from falling out, Carter cut custom support blocks using scrap pieces of treated plywood.
He then built a simple jig that slides over the top of the floor joists to use to ensure the blocks are installed at the correct height.
For more DIY Shed building tips and information and to purchase the actual plans for the shed in this video, click the following links:
SHED PLANNING: https://www.askthebuilder.com/how-to-plan-a-shed
SHEDS for STORAGE: https://www.askthebuilder.com/storage-sheds
GARDEN SHEDS: https://www.askthebuilder.com/garden-sheds
SHED RAMPS: https://www.askthebuilder.com/shed-ramps/
ACTUAL SHED PLANS: http://go.askthebuilder.com/plans
I was about to follow your suggestion with blocks to hold styrofoam insulation for a shed floor, but I think I've come up with a better idea.
Galvanized pipe strapping.
You don't lose the space taken up by the blocks. And it's a lot faster to install.
Floor joists on my project are 2" x 6". So I get 1" of styrofoam, topped with 3.5" of unfaced mineral wool. Styrofoam only doesn't usually meet code because it's way flammable. Add the mineral wool and you're good.