Contains UV blockers to protect the wood from the sun's harmful rays which cause the wood to gray prematurely and breakdown. Uses an advanced waterborne alkyd dispersion technology which facilitates the deepest penetration into wood surfaces. Contains high quality UV blockers to inhibit damage caused by the sun. Exceeds the industry-standard test ASTM D-4446 for waterproofing wood, and offers long-term water beading. One coat coverage.