Purple board, a type of drywall made by Gold Bond Building Products, has a gypsum core that’s resistant to moisture, mildew and mold. These qualities make purple board ideal for areas prone to ...

Paperless drywall costs $22 to $35 per 8-foot-tall panel. Purple drywall is the most resistant to moisture and mold growth and is also highly resistant to fire, dents, and scratches. It’s best ...