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How to polyurethane a floor
Choose water-based polyurethane for a faster drying time.
Water-based polyurethane looks milky in the can but dries to a clear finish. It also has a low odor and dries more quickly than oil-based polyurethane.

1). If you're hoping to complete this project in one day, water-based polyurethane is the way to go. Select oil-based polyurethane to add a deeper hue to the existing wood.;
2). Water-based polyurethane is inexpensive and can work for most floors but may not provide optimal results. A good rule of thumb is to apply it within 30 minutes of laying down.;
3). Choose heavy-duty polyurethane for a lighter finish. Polyurethane is heavier than oil-based, and is especially good at preventing stains.;
4). Ultimately, look for water-based polyurethane for a longer drying time. Tap water, or water based polyurethane, dries in about 30 to 40 seconds.;
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