You would have insulated under the slab? I have an old pool liner I'm going to put put down as a vapor barrier before they pour the concrete. Is that what you mean?
Time to buy a tap and die set in metric and SAE. Have considered the Irwin sets and a set of ratcheting holders.
Any recommendations of brand or metals they should be made of? My use is primarily home automotive. I'm hoping I can get a good set for $2-300.
Thanks for the advice!