I have been thinking about laying down laminate flooring in my kitchen. The other night I went down to the crawl space and through the cracks of the 12 x 4's could see about 2 1/2 wood planks running the other direction. After moving my stove and pulling up the floor discoved the following. linoleum, partical board sup floor, wood planking 2 1/2 long. Looked gray. My question is was this common back in the late 70's early 80's to cover up the hardwood with partical board to lay linoleum. Is this hardwood or another sub-floor? Why didn't they lay the linoleum right on top or the hardwood. If this truely is hardwood I have a big project ahead of me. Rip out the cabinets, rip out the linoleum, rip out the sup floor, rent a sander and refinish the hardwood. Thanks guys for all your help with this. Feel dumb having to ask this question but do not understand why you would cover up hardwood with partical board subfloor? Also do not want to rip everything out only to find out that there is a reason I should not have done this......

