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Pricing
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Gallon
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$
39.99
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5 gallons
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$
189.99
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NOTE: Redwood color only available in one gallon container.
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Special Info
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Note:
Natural Deck Oil generally requries pre-application of
Stain Prep. See "Preparation" section below.
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More about Bio-Wash Natural Deck Oil
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Customers often ask us for a deck treatment they can put on once and forget about. We wish for a maintenance-free finish, too. But it doesn't exist.
But there is Bio-Wash Natural Deck Oil: a finish that works well and is easy and pleasant to renew. It's the final step in a wood restoration process that honestly qualifies as a one-day job.
It's possible to prepare the surface and add two coats of Natural Deck Oil in a single day because of this product's remarkable formula. It consists of natural wood oils and pigments dispersed in water, so the product can be applied even to wet wood that's just been rinsed after cleaning.
See the detailed instructions below. Preparation steps for Natural Deck Oil vary according to the existing condition of the deck. Generally,
Stain Prep, (formerly known as Mill Glaze away) must be applied first.
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How it works
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Natural Deck Oil is designed to protect wood two ways.
- The oils penetrate into the wood and fill voids between cells. This reduces the wood's ability to absorb moisture and helps keep out fungi that cause mildew and rot.
- The formula contains pigments that block ultraviolet rays from the sun, which destroy lignin (the "glue" that holds wood cells together).
The clear formula for Natural Deck Oil contains transparent pigments. These are particles so finely ground that they reflect the harmful UV rays while allowing the shorter-wavelength rays of visible light to pass through unimpeded. The wood retains its natural color, but the UV can't get through.
We also sell Natural Deck Oil in three wood tones: natural, cedar and redwood. These contain additional pigment for greater UV protection. Natural, with the least pigment, offers less protection than Redwood, which contains the most. But of course, the greater the amount of pigment, the greater the change in the deck's appearance. We urge our customers to select the darkest tone that is aesthetically pleasing to them. Choosing a stain that matches the original color of the wood keeps a deck looking fresh for a long, long time.
Natural Deck Oil does not form a film and does not mask the texture or grain of the wood. The pigments are translucent.
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How long does it last?
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Usually, Natural Deck Oil should be reapplied every year. People sometimes stretch the job to once every two years, but the wood is better off with an annual coat.
If a deck looks dirty, clean it with Bio-Wash Simple Wash and then check whether water beads up on the cleaned wood. If so, the deck is fine as is. If not, apply Stain Prep to neutralize the residue from Simple Wash and then apply a fresh coat of Natural Deck Oil. (Never apply Natural Deck Oil, which is alkaline, directly after Simple Wash, which is acidic.)
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How much do I need?
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Coverage depends on the texture and moisture content of the wood.
One gallon usually covers approximately 250 square feet of smooth wood or 200 square feet of rough wood on the first coat. For the second coat, 1 gallon should be sufficient for 400 square feet for smooth wood or 350 square feet on rough wood.
If the wood is very damp, more Natural Deck Oil will wick into the wood, so the area covered by a gallon will be about 20 percent less.
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How to use this product
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Preparation
Choose a dry day to refinish your deck. Avoid application when the low temperature will be below 40 degrees F or when the forecast calls for rain within 24 hours. Plan the job so that you can apply Natural Deck Oil while the deck is cool and out of direct sunlight.
The amount of preparation depends on the existing condition of the wood. See Bio-Wash paint strippers and wood brighteners for directions on how to use any of the products mentioned below.
If the deck is new: Prepare the wood by washing with Bio-Wash Stain Prep, applied with a garden sprayer. Stain Prep opens wood pores, stabilizes the pH and adds borate to deter fungus growth.
If the deck looks grungy but was treated in the past year (with any brand of finish): Clean with Bio-Wash Simple Wash. If water beads up on the cleaned wood and the deck looks good, you're done. If water does not bead up, condition with Stain Prep, then apply one coat of Natural Deck Oil in Cedar or Redwood tones. If water beads but the wood looks ugly, strip the old finish with Bio-Wash Stripex-L. (Because Stripex-L is alkaline, it may darken redwood or cedar. Use Bio-Wash Natural Wood Brightener to restore the original color.) Condition with Stain Prep. Then coat with Natural Deck Oil.
If the deck has been painted and the paint is peeling: Strip the old finish with Stripex-L, then brighten if necessary with Natural Wood Brightener. Final prep step: Stain Prep.
If the deck has no finish but has weathered: Remove grime and loose wood fibers with Bio-Wash Woodwash Weathered Wood Restorer or diluted Bio-Wash Woodwash Concentrate. If this darkens the deck, restore the original color with Natural Wood Brightener. Final prep step: Stain Prep.
Application
Wait until standing water has evaporated and there are no obviously wet areas. If Natural Deck Oil is applied when the wood is too wet, the moisture in the wood will wick too much of the finish into the wood, leaving too little on the surface. It helps for the wood to be somewhat moist, however.
Also check to make sure the wood is not hot or in direct sun. A hot surface will cause the finish to dry unevenly, creating a blotchy look and glossy patches.
Apply Natural Deck Oil with a garden sprayer, brush, roller or painter's pad. If you use a roller or sprayer, immediately go over the surface with a brush to ensure an even coat and to help the finish penetrate. Apply the stain liberally.
Wait until the first coat of Natural Deck Oil has been absorbed and there are no obviously wet areas. Then apply a second coat.
End grain absorbs more stain than other surfaces. To extend the life of the coating, apply at least two liberal coats to all ends.Whenever possible, also coat the back of boards.
Drying
Natural Deck Oil usually dries to touch in one or two hours. It can be walked on at that point. A complete cure takes 24 hours at 65 degrees F. The finish can be damaged by water spray during that time.
Cleanup
Tools, over-spray and spills are easy to clean up with cold tap water before the product dries. When dry, use Stripex-L to remove Natural Deck Oil.
Storage
Do not allow unused product to freeze.
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Safety
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Natural Deck Oil is completely free of toxic solvents. We know of no other deck treatment that can make this claim.
Because the ingredients are not harmful, they pose no risk to the person working with them and application is pleasant. (Some of the products that prepare deteriorated surfaces for Natural Deck Oil are caustic and must be applied cautiously. But they are far safer than many similar products on the market.)
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