"John" wrote in message ...
Yep, concrete over insulation (styrofoam or TekFoil insulation or both
if using radiant heat in the slab) will work fine


Radiant heat is nice if you are going to keep the shop at about the same
temperature all the time. If this is a pro shop and you are working every
day, it is great. OTOH, if this is a weekend shop that will have very
little heat on non-working days, radiant heat is not a good idea. It is not
fast to respond to changes and you have to heat up that big slab or
concrete every time.


The wood floor idea is good also. If you prefer not to, good quality mats
are essential in the regular work areas like in front of the bench,
tablesaw, etc. .
Ed