Provides 3-way protection for exterior wood. Penetrates deep into wood to protect against wood rot and mildew. Provides waterproofing protection so wood won't warp, crack, shrink or split from moisture. Also contains a UV absorber to retard the fading and drying that occurs with sunlight exposure. Can be applied over severely weathered, painted, or stained surfaces and is paintable and stainable with oil-based products. Meets VOC requirements in most areas.