Our 1/2" Pre-Cut Mega Rubber Rolls can be used a flooring in a small basement gym. For most home gyms, 1/2" thick rubber can be overkill as this is typically used in commercial gyms where heavy Olympic lifts are being performed, but 1/2" rubber may be needed or desired if trying to match up to an existing floor. For most home gyms, our 8mm rubber is perfectly fine and will perform excellently. There really are no pros or cons between the different types of rubber flooring. They all have the same great benefits of being slip-resistant, mold and mildew resistant, and are very easy to clean and maintain. The only benefit of thicker rubber flooring is that it will better protect your subfloor and be able to withstand heavier dumbbells being dropped on it.