Clear water repellent finishes containing mildewcides help preserve the natural appearance of redwood siding. They may not, however, prevent the natural color changes associated with the weathering process. Clear water repellents or water repellent preservatives are the most natural types of finishes, but they are also the least durable. They require reapplication every one to two years. These finishes can be used on decks, fences, siding or other exterior projects.
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this page last updated: April 02, 2004