Because solvent-based adhesives tend to etch foam board and tub surrounds, the manufacturer has introduced what it calls the first-ever line of solvent-based adhesives that is both low-VOC and safe for these types of bath applications. PROvantage does not damage plastic tub surrounds or foam board and costs less than other products. Cost: $2.40 to $6.48. Franklin International. 800-877- 4583.