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  
$35.08 / qt
qty.   
SALE PRODUCT!
$35.08
$35.08
$84.99
$338.69
$2,999.99
 The item was added to your wishlist.
 The item was added to your shop cart.
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 72

REVIEW SNAPSHOT®

by PowerReviews
WEST System 105 Epoxy Resin
 
4.8

(based on 72 reviews)

Ratings Distribution

  • 5 Stars

     

    (61)

  • 4 Stars

     

    (8)

  • 3 Stars

     

    (3)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (0)

97%

of respondents would recommend this to a friend.

Pros

  • Easy to use (64)
  • Protects well (47)
  • Weather proof (41)
  • Visually pleasing (34)

Cons

  • Messy (19)

Best Uses

  • Outdoors (43)
  • Indoor (27)
  • Wood trim (26)
  • Quick fix (18)
    • Reviewer Profile:
    • Recreational (15), Advanced (14), Beginner (13), Casual/ recreational (12), Professional (8)
    • Was this a gift?:
    • No (32)

Most Liked Positive Review

 

Does all that I ask, and probably more!

I use West 105 Epoxy with the clear 207 hardener for coating cedar strip canoes with fiberglass. The glass wets out easily, adhesion to wood is great, and the clarity with slight amber...Read complete review

I use West 105 Epoxy with the clear 207 hardener for coating cedar strip canoes with fiberglass. The glass wets out easily, adhesion to wood is great, and the clarity with slight amber color enhances the wood's beauty. Sanding irregularities is hard work, like any resin, so it's worth taking the time to get a good finish to minimise this. The epoxy also makes a wonderfully strong glue if thickened a little to prevent running out of joints.

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 72 customers

Sort by

Displaying reviews 1-10

Back to top

Previous | Next »

(1 of 1 customers found this review helpful)

 
5.0

Great Product

By Bill Brandt

from Kennewick

About Me Casual/ Recreational

Verified Buyer

Pros

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

Cons

    Best Uses

      Comments about WEST System 105 Epoxy Resin:

      Good product

      • Was this a gift?:
      • No
       
      5.0

      Reliable Epoxy

      By MED

      from Aiken, SC

      About Me Casual/ Recreational

      Verified Buyer

      Pros

      • Easy to Use
      • Strong And Consistent

      Cons

        Best Uses

        • Boat Construction

        Comments about WEST System 105 Epoxy Resin:

        Consistent, easy to use and always give a strong joint. Dries clear, but needs varnish for UV protection.

        • Was this a gift?:
        • No
         
        4.0

        i would buy this product many more times

        By Russ

        from Middleborough ,MA.

        About Me Beginner

        See all my reviews

        Verified Buyer

        Pros

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

        Cons

          Best Uses

            Comments about WEST System 105 Epoxy Resin:

            Mix thoroughly and match rate of cure catalyst to the project youre working.

            • Was this a gift?:
            • No

            (1 of 1 customers found this review helpful)

             
            5.0

            Best resin

            By Boatman

            from Arlington, Wa.

            About Me Advanced

            See all my reviews

            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

              (1 of 1 customers found this review helpful)

               
              5.0

              Always good stuff

              By HOWARDB

              from MORONGO VALLY, CA

              About Me Professional

              Verified Buyer

              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

                  (1 of 2 customers found this review helpful)

                   
                  5.0

                  Excellent product on pre war mahogany

                  By GARY

                  from S HAMILTON, MA

                  About Me Advanced

                  Verified Buyer

                  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

                    (1 of 2 customers found this review helpful)

                     
                    5.0

                    epoxy

                    By WILLIAMM

                    from MOUNT PLEASANT, SC

                    About Me Casual/ Recreational

                    Verified Buyer

                    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

                        (1 of 1 customers found this review helpful)

                         
                        5.0

                        Very fast and good service

                        By CHUCK

                        from NESCONSET, NY

                        About Me Advanced

                        Verified Buyer

                        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

                            See all my reviews

                            Verified Buyer

                            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

                              Displaying reviews 1-10

                              Back to top

                              Previous | Next »

                              Related Items:
                              JD on Facebook Live Tech Support Jamestown Forum Free Catalog