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 69

REVIEW SNAPSHOT®

by PowerReviews
WEST System 105 Epoxy Resin
 
4.8

(based on 69 reviews)

Ratings Distribution

  • 5 Stars

     

    (59)

  • 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 (61)
  • Protects well (45)
  • Weather proof (39)
  • Visually pleasing (32)

Cons

  • Messy (19)

Best Uses

  • Outdoors (43)
  • Indoor (27)
  • Wood trim (26)
  • Quick fix (18)
    • Reviewer Profile:
    • Recreational (15), Advanced (14), Beginner (12), Casual/ recreational (10), Professional (8)
    • Was this a gift?:
    • No (29)

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 69 customers

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5.0

Best resin

By Boatman

from Arlington, Wa.

About Me Advanced

Verified Buyer

Pros

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

Cons

    Best Uses

    • Outdoor

    Comments about WEST System 105 Epoxy Resin:

    Sheathing for hull exterior. Saturates fiber glass well. Any paint and primer can be used. I have used other resins that only accept those primers manufactured by the specific resin manufacturer, i.e., use our resin, you must use our primer.

    • Was this a gift?:
    • No
     
    5.0

    Always good stuff

    By HOWARDB

    from MORONGO VALLY, CA

    About Me Professional

    Verified Buyer
    Ensign

    Pros

    • Perfect Wood Glue

    Cons

      Best Uses

        Comments about WEST System 105 Epoxy Resin:

        To many uses to list, one of the first epoxy to be formulated for boat builders. Good name in the industry

        • Was this a gift?:
        • No
         
        5.0

        Excellent product on pre war mahogany

        By GARY

        from S HAMILTON, MA

        About Me Advanced

        Verified Buyer
        Ensign

        Pros

        • Easy to Use

        Cons

          Best Uses

          • Indoor
          • Outdoor

          Comments about WEST System 105 Epoxy Resin:

          I used West System epoxy to reinforce and seal old floorboards made with pre war close grain mahogany. It penetrated very well and very good bond to newer wood.

          • Was this a gift?:
          • No

          (0 of 1 customers found this review helpful)

           
          5.0

          epoxy

          By WILLIAMM

          from MOUNT PLEASANT, SC

          About Me Casual/ Recreational

          Verified Buyer
          Ensign

          Pros

          • Easy to Use
          • Protects Well
          • Weather Proof

          Cons

            Best Uses

              Comments about WEST System 105 Epoxy Resin:

              arrived on time and in good shape.

              • Was this a gift?:
              • No
               
              5.0

              Very fast and good service

              By CHUCK

              from NESCONSET, NY

              About Me Advanced

              Verified Buyer
              Ensign

              Pros

              • Easy to Use

              Cons

                Best Uses

                • Outdoor

                Comments about WEST System 105 Epoxy Resin:

                have used it in boat building and furniture making

                • Was this a gift?:
                • No
                 
                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

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