I recently run out of space in my grow tent have to turn closet into one now do I have to insulate the walls before I put my mylar reflective sheets over it or can I just put cardboard and then the reflective material anybody have any experience with this please let me know what should I do. She also shares helpful tips so that anyone can grow food at home. 19 Brilliant Design Solutions For That Unused Closet Home Office Closet Closet Remodel Closet Office My grow closet measures 8 x 2 feet and has sliding doors across the front. How to turn a closet into a grow room . The first step to your indoor greenhouse DIY is to choose the space where youd grow your plants. First one can build out the entire frame and ceiling of the growroom as if building a home. First try find a closet near a source of ventilationusually a closet beside a window is IDEALin my experienceFirst thing is firststrip the closet and disinfect thoroughlyvery importanti try to find or cut a piece of wood a few cent...