Can " hardwood flooring be installed on a concrete slab?

If the question is can a 3/4" hardwood floor be installed directly on concrete, the answer is "I wouldn't if I were you". If the question is can a 3/4" hardwood floor be installed over top of a concrete slab, the answer is "Yes". Our showroom is a perfect example of that. Can you nail hardwood into concrete? No. How then? First, you must install a 3/4" Tongue & Grooved plywood subfloor on top of the concrete slab which will give you a nailing surface for your hardwood. One thing you should know is that this will raise your floor height one and a half inches (1-1/2") which means interior and exterior doors and thresholds may have to be adjusted so that the doors will open and close freely without any interference with the floor.