TWP? 1500 Series is a low VOC formulation and should be used in place of TWP? 100 Series in low VOC states. TWP? 1500 Series is an EPA registered wood preservative which prevents structural damage and wood decay on exterior above ground wood surfaces such as untreated or previously treated fencing, decking, wood siding, log homes and roofing. TWP? 1500 Series is a low VOC preservative with special UV protection. TWP? 1500 Series resists water absorption that causes warping, cracking and splitting as well as preventing freeze damage in colder climates.
