TotalBoat Epoxy Resin
WEST System Epoxy Resin, 105 fiberglass resin
WEST System West System
  • WEST System Epoxy Resin, 105 fiberglass resin

WEST System 105 Epoxy Resin

WEST System Epoxy cures to a high-strength plastic solid at room temperatures, by mixing specific proportions of liquid epoxy resin and hardener.

This clear, pale yellow, low-viscosity liquid epoxy resin is formulated for use with WEST SYSTEM hardeners. It can be cured in a wide temperature range to form a high-strength solid with excellent moisture resistance.

Designed specifically to wet out and bond with wood fiber, fiberglass, reinforcing fabrics and a variety of metals, 105 is an excellent adhesive that will bridge gaps and fill voids when modified with WEST SYSTEM fillers. It can be sanded and shaped when cured. In roller applications, it has excellent thin-film characteristics to flow out and self-level without fisheyeing. 105 resin has a relatively high flash point and no strong solvent odor, making it safer to work with than polyesters.

 
IN STOCK - Available for pickup  
$41.29 / qt
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$41.29
$99.73
$390.80
$3,111.90
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Tech Spec Product Info User Generated Content
By using a simple "cookbook" approach you can tailor the handling characteristics and the physical properties of the cured epoxy to suit your working conditions and specific coating or bonding application.

1. Start with 105 Resin, the basic ingredient of all WEST SYSTEM epoxy compounds.

2. Mix with one of four WEST SYSTEM Hardeners. Select a hardener for its intended use and for the cure speed best suited for your job in the temperature range in which you are working.

3. Add one of six WEST SYSTEM fillers to thicken the mixture as needed. Select a filler for its handling characteristics or cured physical properties. Or, add one of six WEST SYSTEM additives to provide specific coating properties.

Group Size  Resin Quantity  Hardener Quantity  Mixed Quantity  Saturation Coat - Porous Surfaces  Build-Up Coats Non-porous Surfaces  Tensile Strength (PSI) 
A  WSY 105A - 1 Qt. (.94 L)  205A or 206A - .43 Pt. (.20 L)  1.2 Qt. (1.15 L)  90- 105 sq. ft. (8.5-10 sq. m)  120-135 sq. ft. (11-12.5 sq. m)  105/205 - 7,846, 105/206 - 7,320 
A  WSY 105A - 1 Qt. (.94 L)  207A or 209A - .66 Pt. (.31 L)  1.3 Qt. (1.26 L)  90-105 sq. ft. (9-10 sq. m)  120-135 sq. ft. (11-13 sq. m)  105/207 - 7,509, 105/209 - 7,338 
B  WSY 105B - .98 Gal. (3.74 L)  205B or 206B - .86 Qt. (.81 L)  1.2 Gal. (4.55 L)  350-405 sq. ft. (32-37 sq. m)  462-520 sq. ft. (43-48 sq. m)  105/205 - 7,846, 105/206 - 7,320 
B  WSY 105B - .98 Gal. (3.74 L)  207B or 209B - 1.32 Qt. (1.24 L)  1.3 Gal. (4.98 L)  370-430 sq. ft. (35-40 sq. m)  490-550 sq. ft. (45-50 sq. m)  105/207 - 7,509, 105/209 - 7,338 
C  WSY 105C - 4.35 Gal. (16.47 L)  205C or 206C - .94 Gal. (3.58 L)  5.29 Gal. (20 L)  1530-1785 sq. ft. (142-165 sq. m)  2040-2300 sq. ft. (190-213 sq. m)  105/205 - 7,846, 105/206 - 7,320 
C  WSY 105C - 4.35 Gal. (16.47 L)  207C or 209C - 1.45 Gal. (5.49 L)  5.8 Gal. (21.9 L)  1675-1955 sq. ft. (155- 180 sq. m)  2235-2520 sq. ft. (207-233 sq. m)  105/207 - 7,509, 105/209 - 7,338 
BRAND: WEST System
Material: Epoxy
Type: Resin
Usage: Laminating
4.8 64

REVIEW SNAPSHOT®

by PowerReviews
WEST System 105 Epoxy Resin
 
4.8

(based on 64 reviews)

Ratings Distribution

  • 5 Stars

     

    (54)

  • 4 Stars

     

    (7)

  • 3 Stars

     

    (3)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (0)

97%

of respondents would recommend this to a friend.

Pros

  • Easy to use (57)
  • Protects well (43)
  • Weather proof (37)
  • Visually pleasing (31)

Cons

  • Messy (19)

Best Uses

  • Outdoors (40)
  • Indoor (26)
  • Wood trim (26)
  • Quick fix (18)
    • Reviewer Profile:
    • Recreational (15), Beginner (12), Advanced (11), Casual/ recreational (9), Professional (7)
    • Was this a gift?:
    • No (24)

Most Liked Positive Review

 

MJKennedy fine woodworking

Ipe's oily nature is not conducive to strong glue joints, especially when movement stress occurs. We found its lapachol residue sent us searching for a quality adhesive. 20 years of bending wood and...Read complete review

Ipe's oily nature is not conducive to strong glue joints, especially when movement stress occurs. We found its lapachol residue sent us searching for a quality adhesive. 20 years of bending wood and a weeks worth of testing every glue we could find online. The combination of the 207 hardner and 105 resin, made the inpossible possible. Laminating this wood called for a business bankruptcy. The deck is a 11'2" radius, with hundreds of glue joints. This deck is on the ocean, holding up to elements. West System once again proved this is a quality product.

P.S.- we use this product through out our freestanding spiral staircases. This is the strongest adhesive we can find

VS

Most Liked Negative Review

 

Good, but not for all applications

The packaging system and pumps make it easy to use in the correct proportions, and it needs to be in the correct proportions, it is not forgiving of mistaken mixes.
It is...Read complete review

The packaging system and pumps make it easy to use in the correct proportions, and it needs to be in the correct proportions, it is not forgiving of mistaken mixes.
It is possible to get bad results if the ambient temp drops during cure, or humidity gets very high during cure. In the humidity case, the result was a milky appearance and partial cure. In these cases, you need to remove it and start over. I have also had some instances of partial cure, where the "final" result is rubbery.
I have found that this epoxy is good for general repairs, especially with coarse cloths and mat, it laminates well to polyester and vinylester when making hull repairs. The powder fillers are dusty and messy but work well for 'fill' repairs and make it easy to sand smooth and flush.
This epoxy does not seem to work at all on Teak or Oak wood. It is too viscous and does not penetrate the grain. This results in just a skin coat of epoxy on the wood's surface, which later peels off the oak or teak, like old, blistered latex paint.
It worked ok on mahogany and pine/fir.
Do not use it in thick coats or try to 'pot' anything, even something tiny, the exotherm will make it smoking hot and you will have a rubbery mess that is hard to clean up.
It seems to accept mix-in color pigments fairly well.

Reviewed by 64 customers

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5.0

Expensive, but excellent

By SK

from Falmouth, MA

About Me Advanced

Verified Reviewer

Pros

  • Durable
  • Effective
  • Expensive
  • Strong

Cons

    Best Uses

    • Any Fiberglass Repair

    Comments about WEST System 105 Epoxy Resin:

    I used West Systems epoxy with fiberglass mat to lay down a new layer of fiberglass on the plywood platform under the fuel tank on my 1984 Bertram. The original layer was pulled up while removing original fuel tank. I measured the correct quantities of resin and hardener with the metered pump kit . I highly recommend the pump kit for small repairs. Just as with any 2 part activated product, one must work quickly, efficiently, and especially neatly. I can't emphasize enough how well prepared and organized one must be. Time will not be on your side. Mix only enough to use for each small phase of the job. And do not mix and leave in a deep pot. It will get very hot. So after mixing, transfer to shallow metal pan and get to work.

    I also used this to attach the new fiberglass fuel tank to the bulkhead. The installation was successful and I was very pleased with the product. It performed as specified.

    Since I had it around, I also used it to seal the lead downspout insert in a cedar gutter and seal the end of the gutter from leaking..........EVER. It might seem like overkill, but I now think it is the perfect product for this application.

    • Was this a gift?:
    • No
     
    4.0

    Pricey but reliable

    By Cynical1

    from Columbia, SC

    About Me Advanced

    Verified Buyer
    Lieutenant

    Pros

    • Chemically Resistant
    • Easy to Use
    • Protects Well
    • Weather Proof

    Cons

      Best Uses

      • Engine
      • Indoor
      • Outdoor
      • Quick Fix
      • Wood Trim

      Comments about WEST System 105 Epoxy Resin:

      I have made fiberglass over plywood diesel fuel and water tanks using West 105 Resin and they have lasted for over 25 years with no signs of decay.
      While one may think just coating plywood with epoxy and not glass is sufficient, I have found that the plywood still has the possibility of checking, and thus making an unexoected mess.
      I do not use a roller when applying resin. If the surface is horizontal, I lay out the glass and then carefully pour on the surface a controllable amount of resin and use a squeegee to help spread it and saturate the glass.

      • Was this a gift?:
      • No
       
      5.0

      West system epoxy works very well.

      By Bilbo

      from YOUNGSTOWN, OH

      About Me Casual/ Recreational

      Verified Buyer
      Ensign

      Pros

      • Protects Well
      • Weather Proof

      Cons

        Best Uses

        • Indoor
        • Outdoor

        Comments about WEST System 105 Epoxy Resin:

        I use this product to weatherprof wood and fiberglass repair. It penetrates and protects things from the elements.

        • Was this a gift?:
        • No
         
        5.0

        great product

        By TODDO

        from CORTLAND, OH

        About Me Beginner

        Verified Buyer
        Ensign

        Pros

        • Easy to Use
        • Protects Well
        • Weather Proof

        Cons

          Best Uses

          • Outdoor

          Comments about WEST System 105 Epoxy Resin:

          this is a very strong epoxy.

          • Was this a gift?:
          • No
           
          5.0

          Most reliable two part adhesive

          By Mattacme

          from Santa Rosa, CA

          About Me Professional

          Verified Buyer
          Ensign

          Pros

          • Easy to Use
          • Excellent Performance
          • Protects Well
          • Weather Proof

          Cons

            Best Uses

            • Indoor
            • Outdoor
            • Structural Repairs
            • Weathertight Repairs
            • Wood Trim

            Comments about WEST System 105 Epoxy Resin:

            The manufacturer offers mixing pumps that take the guesswork out of getting the best ratio of resin to hardener and I highly recommend them. Be certain to use these products within their temperature range.

            • Was this a gift?:
            • No
             
            5.0

            Safest of the epoxies to use.

            By J-J

            from Montrose, CO

            About Me Casual/ Recreational

            Verified Buyer
            Ensign

            Pros

            • Easy to Use
            • Protects Well

            Cons

              Best Uses

              • Indoor
              • Outdoor
              • Quick Fix
              • Wood Trim

              Comments about WEST System 105 Epoxy Resin:

              West System leads the field in quality, safety, and information.

              • Was this a gift?:
              • No
               
              5.0

              West System products

              By J-J

              from Montrose, CO

              About Me Casual/ Recreational

              Verified Buyer
              Ensign

              Pros

              • Easy to Use
              • Protects Well

              Cons

                Best Uses

                • Indoor
                • Outdoor
                • Quick Fix
                • Wood Trim

                Comments about WEST System 105 Epoxy Resin:

                West System epoxy, fillers and accessories are far superior and safer than other knock-offs that have appeared during the last couple of decades. They are slightly more expensive, but more reliable. West research in safety, their customer service are without reproach. Would not buy any other epoxy if West were available. I am on my fourth boat-building project using their product.

                • Was this a gift?:
                • No

                (1 of 1 customers found this review helpful)

                 
                5.0

                Quality Epoxy System

                By Remwoodz

                from PA

                About Me Advanced

                Verified Buyer
                Ensign

                Pros

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

                Cons

                  Best Uses

                  • Woodworking

                  Comments about WEST System 105 Epoxy Resin:

                  Excellent reliable product line, reasonably priced,

                  • Was this a gift?:
                  • No
                   
                  4.0

                  The best there is but......

                  By tennesseejed3

                  from Stow, MA

                  About Me Advanced

                  Verified Reviewer

                  Pros

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

                  Cons

                    Best Uses

                    • Indoor
                    • Outdoor
                    • Wood Trim

                    Comments about WEST System 105 Epoxy Resin:

                    West Systems is the best epoxy out there, bar none. The problem is that most of the time in boat building, a lesser product will be just as effective given the load that's put on it. The reason I give it 4 stars is the price. I have used MAS epoxy for a couple recent builds and had wonderful results. It is thinner and has no blush which saves alot of time. I love West, but I will use MAS or Raka to save the money without sacrificing mush in the quality.

                    • Was this a gift?:
                    • No
                     
                    5.0

                    Excellent product, will buy again.

                    By Hal

                    from Michigan

                    About Me Casual/ Recreational

                    Verified Buyer
                    Ensign

                    Pros

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

                    Cons

                      Best Uses

                      • Outdoor
                      • Wood Trim

                      Comments about WEST System 105 Epoxy Resin:

                      First time drift boat builder. This product was recommended by a friend who is in the process of rebuilding a ChrisCraft 1950's era. The product is very easy to use, the pumps are a god send, very easy to mix right the first time.

                      • Was this a gift?:
                      • No

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