it depends on where you are. If you have heat and you have good insulation,
you don't need anything on the cement slab. I'm in Canada. It's -25 Celsius
for 2 or 3 weeks now and working in the garage (similar dimension as yours
with high ceiling) is not a problem. Furthermore, I don't know how you would
manage with heavy equipment on soft wood like plywood on the ground ? I've
layed down vinyl rough finished commercial flooring (from any home
improvement store, about 1$C/sq.ft.) and it gives me a good surface to work,
really easy to clean and not slippery.


a écrit dans le message de news:
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I just had a workshop (14*21 w/ hi ceilings) built that is attached to
the back of my garage. Walls and ceiling are insulated with drywall
attached. The concrete floor is 8 inches thick. I have heat in the
workshop. Now I need to cover the cement slab with something that is
easy, quick and inexpensive, but will help prevent the cold from coming
thru the floor. The workshop will be used for all kinds of projects,
but specifically wood-related projects. I am thinking about putting
down a grid of 2x4's, then filling in with styrofoam insulation and
then covering with plywood or equivalent (plywood is expensive). how
thick should the plywood be and do I need anything on top of it or can
I use it as is. thanks for any ideas.