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WEST SYSTEM #207 Special Coating Hardener

This hardener was especially developed for use with WEST SYSTEM Brand 105 Resin in coating applications where an exceptionally clear, moisture-resistant, natural wood finish is desired. Cures to a light amber color, similar to traditional spar varnishes. An ultraviolet inhibiting additive improves the resistance of a WEST SYSTEM 105/207 mixture to sunlight, but the cured epoxy surface will still require the additional protection of a quality UV-filtering varnish. 207 is designed to self level for smooth finishes, and to wet-out and bond fabrics. Although it provides good physical properties for general bonding applications, it is more difficult to thicken and less cost effective for this purpose than 205 or 206 Hardeners. It’s also used for laminating veneers where bleed through at joints may be exposed to sunlight.

  • Mini Pump Kit is a must for precise metering of all group sizes of WEST SYSTEM resins and hardeners
Mix Ratio, Resin:Hardener
Pot life at 72°F (22°C)
Cure to a solid state
Cure to maximum strength
Minimum recommended temperature
Pumps
3:1 by volume (3.5:1 by weight)*
22 to 27 minutes
9 to 12 hours
4 to 7 days
60°F (16°C)
300, 306-23 or 309-3
 
     
Customer Reviews
Product Models
Description WM Model # MFG Part # Availability Price Quantity  
Special Coating Hardener - Clear, 0.66 Pint 243891 207-SA
In stock online.

$41.99

Special Coating Hardener - Clear, 0.33 Gallon 372920 207-SB
In stock online.

$87.99

Special Coating Hardener - Clear, 1.5 Gallons 372938 207-SCC
In stock online.

$264.99

Product Description

This hardener was especially developed for use with WEST SYSTEM Brand 105 Resin in coating applications where an exceptionally clear, moisture-resistant, natural wood finish is desired. Cures to a light amber color, similar to traditional spar varnishes. An ultraviolet inhibiting additive improves the resistance of a WEST SYSTEM 105/207 mixture to sunlight, but the cured epoxy surface will still require the additional protection of a quality UV-filtering varnish. 207 is designed to self level for smooth finishes, and to wet-out and bond fabrics. Although it provides good physical properties for general bonding applications, it is more difficult to thicken and less cost effective for this purpose than 205 or 206 Hardeners. It’s also used for laminating veneers where bleed through at joints may be exposed to sunlight.

  • Mini Pump Kit is a must for precise metering of all group sizes of WEST SYSTEM resins and hardeners
Mix Ratio, Resin:Hardener
Pot life at 72°F (22°C)
Cure to a solid state
Cure to maximum strength
Minimum recommended temperature
Pumps
3:1 by volume (3.5:1 by weight)*
22 to 27 minutes
9 to 12 hours
4 to 7 days
60°F (16°C)
300, 306-23 or 309-3
 
     

Specs

REVIEW SNAPSHOT®

by PowerReviews
West System#207 Special Coating Hardener
 
5.0

(based on 9 reviews)

Ratings Distribution

  • 5 Stars

     

    (9)

  • 4 Stars

     

    (0)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (0)

100%

of respondents would recommend this to a friend.

Pros

  • Easy to use (7)
  • Visually pleasing (5)
  • Weather proof (4)
  • Protects well (3)

Cons

No Cons

Best Uses

  • Outdoors (3)
    • Reviewer Profile:
    • Casual/ recreational (3)

Reviewed by 9 customers

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Displaying reviews 1-9

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5.0

West System 207

By lar

from Jamestown, NY

About Me Power User

Verified Buyer

Pros

  • Crystal clear finish
  • Easy To Set Up

Cons

  • None

Best Uses

    Comments about #207 Special Coating Hardener:

    West System products are the best.

    • Primary use:
    • Personal
    • Was this a gift?:
    • No
     
    5.0

    Exactly what I ordered

    By Skunkface

    from North myrtle beach

    About Me Casual User

    Verified Buyer

    Pros

    • Easy To Use

    Cons

      Best Uses

      • Upgrade

      Comments about #207 Special Coating Hardener:

      Expensive

      • Primary use:
      • Personal
      • Was this a gift?:
      • No
       
      5.0

      Great clear coat for white oak

      By Flicka Jay

      from Providence RI

      About Me Casual/ Recreational

      Pros

      • Easy to Use
      • Protects Well
      • Visually Pleasing
      • Weather Proof

      Cons

        Best Uses

        • Outdoor

        Comments about #207 Special Coating Hardener:

        I used this product to coat the white oak cheeks on my sailboat rudder. Sanded the wood, cleaned with acetone, breifly heated with heat gun, mixed small batch well in paper cup, applied with a squeegy and pressed into wood grain. I reapplied a few more coats when the epoxy started to kick - no sanding between coats. After everything hardened, I drilled slightly oversized holes for the bronze through-bolts, filled with thickened expoxy, and after it set drilled appropriate bolt holes. I then covered everything with a few coats of varnish to provide UV protection and assembled. I lightly sand and reapply varnish once a year. After three years, the cheeks still look great!

        (0 of 1 customers found this review helpful)

         
        5.0

        Clear product and works very well

        By Silver Tears Campers

        from Roanoke VA

        About Me Professional

        Verified Buyer

        Pros

        • Easy to Use
        • Visually Pleasing
        • Weather Proof

        Cons

          Best Uses

          • Outdoor
          • Wood Trim

          Comments about #207 Special Coating Hardener:

          I'm using it as a base coat with a UV varnish on top so maintenance will be simplified.

           
          5.0

          I would buy this product again

          By Mark

          from Sanger

          About Me Casual/ Recreational

          Verified Buyer

          Pros

          • Easy to Use
          • Protects Well
          • Visually Pleasing
          • Weather Proof

          Cons

            Best Uses

            • Indoor
            • Outdoor
            • Wood Trim

            Comments about #207 Special Coating Hardener:

            None

             
            5.0

            easy to use

            By skyliner

            from 84062

            About Me Beginner

            Verified Buyer

            Pros

            • Easy to Use
            • Protects Well
            • Slow drying
            • Visually Pleasing
            • Weather Proof

            Cons

            • None

            Best Uses

            • Quick Fix
            • Wood surfaces

            Comments about #207 Special Coating Hardener:

            this is the first time i have used real epoxy resin, and i was expecting it to be super difficult. but it went on clean, dried slow enough for me to work with it. doesn't smell bad like the bondo stuff.

             
            5.0

            Great product

            By WCS

            from DE

            About Me Casual/ Recreational

            Pros

            • Easy to Use
            • Visually Pleasing
            • Water Clear

            Cons

              Best Uses

                Comments about #207 Special Coating Hardener:

                I'm using this product with 105 resin and carbon fiber cloth. I like that it's water clear. It's as easy to use as any hardener/resin system. I have not had the problem of leaking cans that another reviewer noted.

                 
                5.0

                can leaks!

                By DragonsBear

                from bloomington, Indiana

                About Me Perfectionist

                Pros

                • Easy to use

                Cons

                • Cans leak

                Best Uses

                • Composite hiking staffs
                • Reinforcing and coating

                Comments about #207 Special Coating Hardener:

                better than advertised. only downside is that the cans leak and this stuff isn't cheap. maybe go to plastic packaging like some of the others. 4 out of 4 cans of the 207 have leaked. one can leaked almost the whole contents before i found it. cans arent damaged. they just leak. [...]. The product itself is excellent.

                 
                5.0

                Now, it's clear!

                By BG

                from Phoenix, AZ

                Verified Buyer

                Pros

                • Excellent gloss

                Cons

                  Best Uses

                    Comments about #207 Special Coating Hardener:

                    We use West System epoxy to embed small objects in wood. The new formula is water clear, and always provides a durable casting.

                    Displaying reviews 1-9

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