Search	Frequently Asked Questions > Products >   Frequently Asked Questions Products General Q: What types of testing do WOLMAN products go through? Q: Which WOLMAN coatings are environmentally-friendly? Features Q: Which WOLMAN finish products are water-base? Q: Which WOLMAN finish products are oil-base? Q: What is the difference between the water-base and oil-base WOLMAN RainCoat® Water Repellent? Q: What is the difference between a water repellent and a preservative? Q: Which of the WOLMAN products will prevent wood from turning gray? Q: What is the difference between a transparent, semi-transparent and solid stain? Q: How long do WOLMAN coatings last? Q: What is the best WOLMAN product? Recommended Uses Q: Can the powder concentrate Deck & Fence Brightener – Pressure-Treated Wood formula be used on Cedar and Redwood as well as on pressure-treated wood? Q: Can the powder concentrate Deck & Fence Brightener be used to clean anything other than wood? Q: Is it better to use a penetrating oil finish or a film-forming product? Q: Does Cedar or Redwood require a preservative? Q: Is it okay to use F&P® Premium Wood Finish and Preservative on lawn furniture? Q: What products are safe for children's playsets?
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