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1 gal. #ST-137 Drift Gray Semi-Transparent Waterproofing Exterior Wood Stain and Sealer

  • Complete weatherproofing protection from the elements
  • Durable advanced 100% acrylic formula
  • All-in-one wood stain and sealer
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Product Overview

The BEHR Premium Semi-Transparent Waterproofing Stain & Sealer provides mildew protection while waterproofing the surface. This stain protects your exterior wood surfaces from harsh weather conditions. This stain is ideal for decks, fences and siding and resists rain after 4 hours.
  • Ideal for application on exterior wood decks, fences, siding and patio furniture
  • For the best results, be sure to properly prepare the surface using the required preparation products as listed in the Use & Care Manual
  • Advanced 100% acrylic formula
  • Easy clean-up with soap and water
  • Mildew resistant finish
  • Waterproof formula provides protection in a wide range of climatic conditions
  • Resists UV damage for a long-lasting, freshly painted look
  • Can be applied to completely dry wood in temperatures between 35-90°F
  • Formulated for use with a pad applicator, brush, roller or sprayer for easy application
  • Coverage area: 1st coat 250-300 sq. ft., 2nd coat 500-600 sq. ft.; avoid applying finish too heavily, two thin coats required
  • Resists rain after 4 hours
  • Formula offers 6 years on decks and 8 years on fences and siding
  • Actual paint colors may vary from on-screen and printer representations
  • Online Price includes a Paint Care fee in the following states: CA, CO, CT, DC, ME, MN, OR, RI, VT, WA
  • Which type of exterior paint is best for your home?
  • California residents

Info & Guides

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Container Size
1 Gallon
Coverage Area (sq. ft.)


Application Method
Brush,Pad,Paint Sprayer,Roller
Base Material
Color Family
Drift Gray
Dry to touch (min.)
120 min
Maximum Optimal Temperature (F)
Minimum Optimal Temperature (F)
Number per Package
Paint/Stain Clean Up
Soap & Water
Paint/Stain Features
Low Temperature,Mildew Resistant,UV/Fade Resistant,Waterproof
Paint/Stain/Waterproofer Product Type
Wood Deck Stain & Sealer
Recommended Number of Coats
Stain & Sealer In One
Substrate Condition
Pressure Treated Wood,Unfinished Wood
Substrate/Surface Usage Type
Surface Location
Time before recoating (hours)
Vertical / Horizontal

Warranty / Certifications

Manufacturer Warranty
Limited Warranty

Questions & Answers

Typical questions asked about products:

  • Is the product durable?
  • Is the product easy to use?
  • What are the dimensions of the product?

Customer Reviews

  • 4.4
    out of 444 reviews
  • 86%recommend this product
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Showing 1-10 of 444 reviews
Goes on easily and stains well even after one coat....
Goes on easily and stains well even after one coat. With two coats the color becomes more true as more of the natural wood is hidden. A nice effect. Waterproofing is good even after one coat.
  • Verified Purchase
Covered our red dock like new!
We purchased our home with a red dock and wanted to cover it to be more neutral. We bought the solid color waterproofing exterior wood stain and sealer in drift gray and love the results. We did two coats to get thin spots using a sprayer. The only prep we did was powerwashing, allowing a day to dry, then spraying the next day.
    • Recommended
    Smooth, semi-transparent, and can be applied in layers. Applicable with most paint sprayers with ...
    Smooth, semi-transparent, and can be applied in layers. Applicable with most paint sprayers with minimal overspray when used away lowest air assist setting.
    • Verified Purchase
    • Recommended
    great protection
    [This review was collected as part of a promotion.] I bought this for my deck 2 years ago and it's still looking great. My deck wood is very well protected with this stain and sealer.
      • Recommended
      This stain does not with stand AZ sun.
      I live in southern AZ, the sun makes any surface very hot. This stain begins to blister after 2 yrs. Then I have to sand the entire deck and benches before I can apply new coat. I use an air compressor to make sure the surface completely free of dust. I use the recommended 2 coats, 24 hrs between coats. I apply this before our Monsoon season (starts early July) and it does really well repelling water. If you live in a part of the country where the temps are moderate, this stain may be perfect for you.
        Looks great and definitely waterproof
        [This review was collected as part of a promotion.] I always turn to Behr for paint and staining products and have never been disappointed for over 30 years. We built a new boathouse last fall and had the painter use Behr. He only applied one coat so I applied a second coat on the floor this fall. The product is easy to use and since it is water based it cleans up easily.
          • Recommended
          Color fades in 6 months
          [This review was collected as part of a promotion.] I bought this 7 months ago and used it on 2 fences. Within 6 months the chocolate color had faded significantly. I thought it might be too dark but ended up much lighter than I wanted. I also purchased much more than expected. It does penetrate well into the wood.
            Cedar fence treatment
            [This review was collected as part of a promotion.] We have a cedar fence that was in desperate need of treatment. Was grey and dried up from Texas sun. We have finished part of the fence and notice a huge difference after a rain, fence now repels water. Love the color, Sage! Easy to apply (small roller and brush) and water clean up!
              • Recommended
              BEHR PREMIUM Woodland Green Semi-Transparent
              [This review was collected as part of a promotion.] BEHR PREMIUM Woodland Green Semi-Transparent was the perfect color for out outdoor area that needed and uplift. It truly brought life to it. Thanks for this particular color of green.
                • Recommended
                Excellent product
                [This review was collected as part of a promotion.] I picked up a gallon of Behr PREMIUM waterproofing stain and sealer and I couldn’t be happier with the results. My fence boards were warping but now they are holding shape and look way better.
                  • Recommended
                  Showing 1-10 of 444 reviews