"David Nebenzahl" wrote

What types of solid flooring can I temporarily install over flat
Industrial Carpet, which can not be removed. The Temporary floor need
last only 6 to 8 months, but should protect the ugly carpet. No need
to worry about tripping hazards, etc.

some underlayment first (OSB or similar), you could put just about
anything over it. The underlayment could be screwed down to the real floor
to make it easily removeable.

Yup. In Navy when they work on ships, they lay down a thin plywood (and i
mean thin, this stuff is 1/4 inch if that) then tape the joints with an
industrial level tape along every seam, including the bulkheads. Being
steel bulkheads, this is easy but should be able to do it to wood floor
molding as well. May need 2 layers for an 8 month job. Set second layer so
the joints are offset from the one under it.