foil tape
cactusman23 Reviewed by cactusman23 on . problem with grow room I'm having a hard time setting up my room. I'm doing it in a crawlspace in my garage. Trouble is the crawlspace is underneath my living room stairs, and there are small cracks in the stairs so light comes through. What can I use to cover up the light on the back of the stairs? I've tried putting up thick, black garbage bags but the light still shines through. Rating: 5