My new house has beautiful rough beams in a vaulted ceiling. I've discovered beautiful hardwood stairs under ugly Berber carpet going up to the second floor. I've removed the carpet from one stair and cleaned the tread and it's a much better look than the carpet but the tread is now a little slippery. I'm looking for ideas to add safety without taking away from the look of the wood. I'm wondering if a design dremeled lightly into the tread would be enough roughness to add a bit of safety?