Northern KDAT Clear Deck Sealer provides superior protection for all types of wood. Oxide based Nano Particles protect the wood in all types of weather from UV damage, water damage, & fungi growth. One gallon will cover approximately 100 – 150 sq. ft., depending on wood condition, dries to touch in 2-6 hours, & fully cures in 4-7 days. Apply 2 coats. KDAT Deck Sealer contains more than 100 VOC & CAN NOT be shipped to California. Several other states have a 250 VOC limit. Check your local regulations to make certain.