On Thu, 21 Jul 2016 13:25:30 -0400, wrote:

On Thu, 21 Jul 2016 16:44:01 +0000, jake
m wrote:

I need to cover parquet flooring as I need to put a hospital bed and hoist on
it. Which is it better to cover it with hardboard mdf or ply

Any of them will work as long as it doesn't get wet. If it gets wet,
water damage to the parquet will be the biggest issue

OP might tell the class his current sub-floor.