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WEST SYSTEM 105 Epoxy Resin

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WEST System 105 epoxy resin

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Product Details

WEST SYSTEM 105 Epoxy Resin cures to a high-strength plastic solid at room temperatures, by mixing specific proportions of liquid epoxy resin and hardener. Formulated to work with WEST SYSTEM 205 Fast, 206 Slow, 207 Special, and 209 Tropical Hardeners. You can use this clear, low-viscosity liquid epoxy in a wide temperature range, starting at 40 F. Cure time ranges from 60 minutes to 4 hours based on the hardener used. The curing process forms a high-strength solid bond with excellent moisture resistance. See 'Data Sheets' for more information on usage.

Designed specifically to wet out and bond with wood fiber, composite materials like fiberglass, and reinforcing fabrics, and a variety of metals. Ideal for marine and boat repair applications.

105 is an excellent adhesive that will bridge gaps and fill voids when modified with WEST SYSTEM fillers. When cured, you can sand and shape the resin as needed. In roller applications, it has excellent thin-film characteristics to flow out and self-level without fish-eyeing. 105 resin has a relatively high flash point and no strong solvent odor, making it safer to work with than polyesters.

Available for purchase in 1 quart, .98 gallon, and 4.35 gallon sizes.

Tech Specs
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
Info & Guides
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.

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Overall Rating

4.7

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Filter Reviews

1 to 10 of 149 Reviews
1 – 10 of 149 Reviews
Maine
5 out of 5 stars.

Works as advertised.

7 months ago
Plenty of working time. Hardly any waste this way!
Helpful?
Lawson, Missouri
5 out of 5 stars.

West System Epoxy - the good stuff

8 months ago
I have tried many different epoxies and I always come back to West System. It may cost a little bit more but it is the Cadillac in my opinion. I really like their pump system as well.
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Branson Missouri
5 out of 5 stars.

Great results

8 months ago
I used the epoxy and hardener to inject into my camper floor due to foam breakdown and it has worked wonderfully.
Helpful?
Omaha, NE
5 out of 5 stars.

Amazing

11 months ago
What is there to say about the time tested, industry standard West Systems resin that hasn't already been said. If you're new to using two part epoxy, every professional who uses epoxy goes back to West Systems after trying anything else. 101 works with a variety of different hardeners/catalysts. I keep several different hardeners around for different ambient temperatures from cold to hot. The hotter it is outside, the faster epoxy ""kicks""—less working time. Use slower hardeners in these situations and vice versa for cold temps.
Helpful?
Omaha, NE
5 out of 5 stars.

Good Stuff

11 months ago
Lots of working time, maybe more than I wanted, but that's far better than not getting your piece where you wanted it before the epoxy kicked.
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St John VI
5 out of 5 stars.

Great Product

2 years ago
Tried and true product. For marine use as well as general wood working in a professional wood shop we dependened on West System.
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Grottoes,
5 out of 5 stars.

Best epoxy

2 years ago
I use this epoxy to do furniture repairs. It's the best I've used.
Helpful?
Erie, PA
5 out of 5 stars.

have been using this for many years

2 years ago
We use this product (-w various additives) in the construction of prototype and low volume production Thermoform/vacuum form tooling. Happy with the ease of use, good pot life, good consistency, and non offensive odor. It has worked very well for us.
Helpful?
Kansas
3 out of 5 stars.

Add is misleading

2 years ago
The add to me is misleading. It appears in add that if you purchase the gal of resin that the hardner comes with it. Since it didn't it caused over a weeks delay in my project. The product and service were great but from on I'll be watching for misleading adds.
Helpful?
maryland
5 out of 5 stars.

JD was great

2 years ago
thanks for your help, exactly what i needed and i got it in 2 days.
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1 – 10 of 149 Reviews

Questions

1 - 10 of 158 Questions

Q: I live in Northern Minnesota and it gets pretty cold here. UPS, as usual, just sets packages on our deck. If I order West Systems Epoxy in the winter time and it sits outside for a while and freezes, will it be ruined? Thanks

4 months ago
2 Answers

A: Epoxy is not shipped in temperature controlled containers. Short term exposure to cold temperature will not damage it. As long as you bring it up to room temperature before you mix it you should be good to go. For long term storage, you should keep it in moderate temperatures.

4 months ago
Helpful?

Q: What is the best epoxy resin for laminating the side wall of an RV? I will be injecting through tubing downward on a vertical wall through a 1/4 inch tube. I have used the Total Boat High Performance Epoxy on boat work but the 105 looks like it could work also and it seem to be less expensive. Which would you recommend? Thanks Jim Lambert Jim@ithelp.tv

9 months ago
1 Answer

A: You can use either epoxy. However, the high performance is a bit more flexible, and less likely to overheat when injected.

9 months ago
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Q: I am putting white oak on a porch. Can i use this epoxy as a weatherproofer and as the final finish?

10 months ago
1 Answer

A: You can use it to seal the wood but it will have to be overcoated to protect from UV damage.

10 months ago
Helpful?

Q: I have an antique wooden dough bowl that I'm turning into a sink. I need a clear coat finish that will make it waterproof. What would you recommend?

10 months ago
1 Answer

A: You can use the West 105 Resin with 207 hardener for a clear finish. Even though it's a 5:1 resin, it is mixed with 207 hardener at a 3:1 ratio.

10 months ago
Helpful?

Q: What is the cure time I'm wanting to use it to fix some Delamination on my RV

a year ago
1 Answer

A: There are a lot of variables that affect cure time. Please refer to the info provided under the tab labeled ""Data Sheets"".

a year ago
Helpful?

Q: Making a wooden boat and need fiber

a year ago
1 Answer

A: Hey there. Thanks for reaching out. You can view our fiberglass cloth selection here: https://www.jamestowndistributors.com/product/fiberglass-and-building-materials/fiberglass-cloth or give us a call at 800-497-0010 and we can help you select the right glass for your project.

a year ago
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Q: Given a wood substrate with a base coat of oil base polyurethane coating, I'd like to apply an epoxy top coat to this surface. Have you heard of any problems due to the oil base coating. For instance, problems such as extreme beading of the epoxy or the epoxy surface ""breaking up "" into isolated puddles. How do you advise? Kent Moon

a year ago
1 Answer

A: I'm not sure why you used an oil-based paint. I see a picture of West System epoxy. Wear epoxy is excellent but, I'm not sure what the effect will be using it over the oil base paint.

a year ago
Helpful?

Q: how much hardener 205 hardener to a gallon of to 105 slow hardener

2 years ago
2 Answers

A: The ratio is 5 to 1, 5 parts resin and 1 part hardener. Purchase the West System 300 mini pump system. When installed properly the pump measure the two parts perfectly.

2 years ago
Helpful?

Q: Will this bond to paint or take paint? I was thinking about painting a board I am making and then putting the gloss coat over the top of the paint. If so is there a type of paint I should use?

2 years ago
2 Answers

A: Here's the painting guidance from West System: https://www.westsystem.com/instruction-2/epoxy-basics/finish-coatings/ I hope that this helps! - Eric

2 years ago
Helpful?

Q: I've seen videos of using this to repair RV sandwich flooring. How much would be required to inject approx 60 sq. Ft in a 6""grid pattern?

2 years ago
1 Answer

A: That will depend on how deep the fill will be. If you are drilling a 1/4"" diameter hole 1"" deep and that uses 1/10th of an ounce a gallon of resin would fill about 1280 holes. A quart would fill about 320 holes. A sq ft with holes every 6"" would be 9 holes x 60 = 540 holes you would need 2 quarts of resin. This math may not be correct because after the 1st sq ft of holes you will only be filling 6 holes on the next sq ft so this would me more than enough resin.

2 years ago
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1 - 10 of 158 Questions
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