Search	Frequently Asked Questions  >   Frequently Asked Questions General Wood Care Q: If wood is pressure-treated, why does it need a protective finish? Pressure Treated Wood Q: Why is pressure-treated wood better than untreated wood? Q: I read an article concerning the EPA ban on CCA pressure-treated wood. What is Wolman Wood Care Products' response to this announcement and what Wolman Products can be used to help stop the CCA leaching? Surface Preparation Q: If my wood is new, why do I need to clean it? Q: What do I use to clean pressure-treated wood? Q: Can I use household bleach to clean a deck? Q: What do I use to clean Cedar or Redwood? Q: What is tannin? Do I have to worry about it? Q: Is oxalic acid a good cleaner for a deck? Q: How soon do I clean new wood? Q: Is it necessary to use a power washer with WOLMAN Deck & Fence Brightener products? Q: How do I know when to use WOLMAN brighteners or WOLMAN strippers? 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? Application Job Preparation Q: How do I determine the correct square footage of a deck or siding? Procedures Q: How soon should I apply a coating? Q: What is the best way to apply WOLMAN products? Q: How many coats of protective finish should be applied? Q: Does the first coat of WOLMAN EXTREME® have to be brushed on? Q: If it rains within 24 hours after I coat my deck, what will happen to the finish? Compatability Q: Why can't I apply paint on a deck? Q: Can a WOLMAN product be applied over another coating? Q: Should another water repellent sealer be applied over WOLMAN colored finishes? Q: Can I mix any of the WOLMAN products together? Q: Can I tint any of the WOLMAN products? Maintenance Tips Q: Is there a way to clean a deck to remove surface soil without removing the coating's color and protection?
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