Rubber rolls tend to be the most affordable flooring solutions. There are many advantages to rubber rolls besides the affordable price too. It gives you the least amount of seams and is easy to install. 3/8″ thick is a common for most facilities because it can handle weights being dropped on it. If you will not be doing this you can go a bit thinner. Most all these rolls are 4′ wide and can be secured to the floor with carpet tape. There are different colors available. Remember that plain black shows all the dirt so you may want to go with a speckled color such as gray. Good luck and a great place to find a big selection of affordable flooring is http://www.ironcompany.com
Hello Jessica Daly, I have recently installed hardwood flooring into my GYM. And which was working well so I would like to suggest you for Hardwood Flooring to your fitness/personal training studio.