Answer
Nov 02, 2019 - 02:21 AM
The amount of exposure to the elements makes it difficult to give a definite time frame. Vermont Natural Coating Water Proofer will generally provide a protective coating for about two years with southern or western exposure and twice as long with eastern or northern exposure. More important is the condition of the substrate that is being covered with this product. If it's brand new wood that is clean and dry it will bond much better and longer than if it is old, grey and dirty. Cleaner the better. Vermont's PolyWhey product will hold up longer but it's difficult to say how much longer. We've tested it on a fir garage door for more than 3 years and it is holding up very well. We expect another 2-3 years.
