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.
$38.93
$98.26
$390.80
$3,111.90
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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
Questions & Answers about WEST System 105 Epoxy Resin:
2013-05-21A shopper asked: what hardner should i use for a wood strip kayak?
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2013-05-21GORDON SENTER: I finished a strip built kayak out of cedar last September. I have about 180 miles on so far - lake and creek kayaking over and though logs, brush and rocks in all kinds of weather and it has held up beautifully with only a few scratches. I used West System 206 slow hardener with the West System Epoxy resin. I had previously used it on a stitch and glue plywood kayak and found that it was easy to work with and it certainly holds up. Make sure you cover it with 3 to 5 coats of good spar varnish to protect the epoxy for the sun.
Gordon
2013-05-21JEFF HUFFENBERGER: If you are intending to finish it bright, you should use 207 because of its clarity.
2013-05-21CRAIG BARRETT: Unless you live in the frigid frigid north, I would suggest 206 Slow Hardener to improve strength and adhesion. If you are coating the surface, the 207 clear hardener is only if you are coating an absolute white surface and want it to remain white.
2013-05-22Rick Contestabile: ...depends on how much working time you need. Fast hardners may not give you enough time to set up the strakes/bulwarks etc. And this also depends on ambient temperature. And the depth of the mixing vessel. The more compact the mixed resin, the faster it goes off. And neat project!!
2013-05-22MICHAEL ABERNETHY: Use 205 fast hardener and 206 slow hardener for seams, filleting, general bonding and fabric application depending on your available working time and ambient temperature.
Use 207 hardener for clear coating the interior and exterior for a bright finish and UV stabilization.
Go to West Sytems website for specific application information.
2013-05-22PATRICK MCNAMARA: Can't help you. I haven't used it yet and I have no experience with boat construction. Sorry.
2013-02-20A shopper asked: how to glue Ipe?
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2013-02-20WILLIAM CURRY: I am not familiar with Ipe wood characteristics. If glueing two boards together, put mixed resin on both boards, place together and clamp. Do not squeeze the clamps to maximum, just to secure the boards firmly in place. If you are glueing bent or curved applications, wet the boards with expoxy resin first, then mix in 403 microfibers to thicken mix and respread over first application within 15 minutes. If glueing end grains, use the same process. Wet the end grains with epoxy resin, let soak several minutes, go back with 403 micro fiber thickened mix and reglue. I let all my materials stand overnight before unclamping. Clamping can be minimal, just to hold in place until epoxy resin cures. I have never had anything glued with West Systems Epoxy Resin fail! Fantastic Material.
2013-02-22PATRICK MCNAMARA: Sorry but I have not done so before.
From my experience with other oily woods, such as Cocobolo, I have never had any trouble using 5 minute epoxy glue. The books also say if in using something like Titebond III, to wipe the surfaces off with a paper towel wetted with some acetone, gluing up immediately after the surfaces dry.
2013-02-10A shopper asked: is this water proof ?
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2013-02-15ARTHUR LUSIGNAN: Yes if applied per the manufacturers instructions.
2013-02-15JAMES FRASER: To the best of my knolage it is waterproof.
2013-02-16JOHN ATKINS: It is waterproof.
2013-02-20SCOTT BOSHART: Yes it is. West System has a great deal of free helpful information available on their web site.
2013-02-06A shopper asked: Can I thin the 105 resin system in order to use it as a brush on manner ? I would like to have a more watery mixture for some of my hobby needs. Any suggestions?
+Expand Answers
2013-02-06DAVID FRASE: No it can't be thinned.
2013-02-06CHARLES SOMELOFSKI: I don't know any way to "thin" West system epoxy. I don't think it can be done.
2013-02-06J D KEITH: No. Why thin, first coat usually soaks in. Use 207 to avoid blush --Jim
2013-02-06J D KEITH: No. Why thin, first coat usually soaks in. Use 207 to avoid blush --Jim
2013-02-07PATRICK CAUSLEY: You could try Smith's penetrating epoxy, it's soaks in like water. Available at JD! 207 has a longer cure time and that does allow more penetration. Less air bubbles with 207 as well.
2013-02-05A shopper asked: WHAT IS SHELF LIFE OF WEST 105?
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2013-02-05BOB BENSON: seems to be inert, does not age.........bob
2013-02-05DAWN RICHTER: We have a furniture restoration business and have used West epoxy for at least 20 years. That said, not sure I can give you an exact shelf life, but it has never gone "bad" on us.
2013-02-05RONALD MORGAN: As long as it is unopened it may last for years. I have had a gallon opened with a pump in it for more than a year and it is like I just opened it.
2013-02-05GORDON SENTER: I don't know. I do know that I successfully used some left over West System epoxy 18 months after I first opened it. After the first project I simply left the containers sitting on my work bench where the temperature ranged from 60 degrees to 70 degrees. Eighteen months later the pumps, which I had left in the containers, and the epoxy worked just fine. Hope this helps.
2012-11-05A shopper asked: How much area will 1 quart of 105 Epoxy Resin and 1 quart of 205 hardener cover? I will be applying it to the top of cedar posts to prevent moisture invading the post and causing rot.
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2012-11-05BOB KIP: I don't now what coverage will be but it should be extensive unless you have many, many post-tops. The end grain will soak up a good bit the first time or two around, but after that it should stretch a good bit. Don't forget to wash off the amine blush between coats and be sure to apply a UV protector over final the coat.
Be sure to buy functionally-matched size containers of resin and hardner. You don't need anywhere near a quart of hardner to go with a quart of resin. The folks at Jamestown can help with this or the proper container sizes can be found on their website.
Good luck. It's great stuff.
2012-10-21STEVEN BUDNY asked: i am restoring a 10 ft rowboat from the 1930s,the wood is bare.should i use a epoxy to protect the wood first??i will paint it in the spring.thank you,steven
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2012-10-22DAVID FRASE: Yes you should. Use an epoxy designed to soak into the bare wood. I've used Ceps (sp? ) for this.
2012-10-22DAVE MACCO: Hi, I applied the epoxy over bare wood (mahogany), several coats. I painted over the epoxy with Interlux after scuffing/sanding the epoxy with 80 grit to break it then 100, 120,150 grit to get the scratch marks out.
2012-10-22RONALD MORGAN: I would definitely use epoxy to protect the wood and rather than paint it I would put a pigment in the resin.
2012-10-23TIM FAGAN: Jamestown sells a product by Smith and Co. thats made for sealing and restoring old wood before paint(epoxy based),works great and paint really sticks Tim
2012-10-27JOHN HEIGHWAY: yes, i definitily would do that. first, thicken it to fill any voids or bond areas together. then give one or two coats of unthickened epoxy, sand lightly and paint, and it will last forever. you will love the results. i always use slow cure.
2012-10-27steven budny: thank you for your reply,i appreciate it
2012-10-19DAVE SHECHTMAN asked: does the surface (cracked fiberglass) need to be completely dry at the time of application?
+Expand Answers
2012-10-22ALAN CRAWFORD: Yes, the surface needs to be dry to use with 105/hardener. I have used acetone to help dry-out rough, wet fiberglass areas. Be careful as acetone is very flammable (using a not air gun, for example, not recommended to hasten the drying!). West makes one type of hardener (Tropical; 209) that allows use in humid conditions (air). I have not used this but the formulation appears to be for humid air conditions and not wet glass surfaces.
2012-10-22HENRI CHASE: The prudent answer is yes, and that is the answer you will get from experts.
I once saw my Dad complete a fiberglass repair UNDERWATER. Wouldn't recommend it, but his repair got us home. I've put it on slightly damp wood, and it seemed to stick.
However, Epoxy forms a mechanical bond to fiberglass, which is why you need to rough up the surface before application. On wet fiberglass the little microscopic surface imperfections that epoxy depends on for adhesion will likely be leveled off with water (weakening the bond). Plus, the water will then be trapped between nearly waterproof layers of plastic, spelling delamination for sure.
So my point is that it depends on both the criticality of the repair, and the situation. If this repair must be done while still wet, then my advice would be to experiment a little, determining if the epoxy will adhere well enough.
2012-10-02A shopper asked: Doe the hardener come with the resin?
+Expand Answers
2012-10-02Ryan L: The hardener is not included. You will need to order the West 205, 206, 207, or 209 depending on your application. It is also handy to pick up a pack of the metering pumps, for easy, calculated dispensing (WSY-300. )
2012-08-25BOB COATES asked: is it possible to get the 105 and 207 in smaller quantities than a quart size?
i really dont use large amounts.. what is the shelf life on unused
portions left in open containers?
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2012-09-14Nathan Fournier: The "a" or quart size kit's are the smallest offered for the standard west system kit's, however you can get the "handy repair kit", part #'s "WSY-101 and WSY-1016" they are smaller quantities that also include some fiberglass, but come in either packet's or tube's. West system also offer's their G/Flex and G/5 kit's which are great product's especially the G/flex "WSY-650-8" if liquid bottle's are required, thank you. Also, the shelf life is typically at least a year, depending on the temperatures it's left in.
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...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 poss...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.
This was my first time every using an epoxy and I was a bit concerned about my lack of experience. I got the pumps (I highly recommend them for proper measurements), read the directions on the epoxy, hardener and pumps and it was easy breezy. Great results!
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9/5/2012
5.0
excellent product and easy to use
By Ken
from Long Island, NY
About Me Casual/ Recreational
Pros
Easy to Use
Visually Pleasing
Cons
Best Uses
Wood Trim
Comments about WEST System 105 Epoxy Resin:
Used the west system on the wood trim of my boat prior to using varnish. 3 coats of each. The results are amazing. I don't know how well it will last but it looks beautiful.
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6/6/2012
5.0
Trusted and reliable epoxy
By Beau Hannam Guitars
from Grand Junction, Colorado
About Me Professional
Pros
Easy to Use
Protects Well
Strong
Visually Pleasing
Cons
Best Uses
Guitar making
Comments about WEST System 105 Epoxy Resin:
I use west systems in various stages for guitar and ukulele making. I dont, but other makers use it for grain filling prior to finishing for ultra flat surface. Good to use to glue on fingerboards so as not to add moisture (which causes slight warping) as happens with titebond. BUY AND USE A DIGITAL SCALE FOR 100% CORRECT 5:1 MIX
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4/8/2012
3.0
I'll buy this again
By Zenya
from Massachusetts
About Me Professional
Pros
Produces a nice finished
Cons
Difficult to Use
Messy
Best Uses
Comments about WEST System 105 Epoxy Resin:
I use this epoxy with the slow hardener for woodworking. I work with old wood, and often have large nail holes to fill. This product is quite viscous as it oozes into the holes, and bubbles rise very slowly to the top. It often takes an extra few tries before the holes are completely filled. Cleanup with water is poor. The fully cured result is a little gummy and clogs sandpaper somewhat. I also notice that the epoxy sinks into the wood a bit, meaning more sanding is necessary. I am aware that this product was not made for woodworking, but I don't know an alternative. That said, the result is nice, and the service is absolutely excellent. The last order arrived in one day!
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3/27/2012
4.0
good epoxy for an amatuer
By skippy
from hanover pa.
About Me Beginner
Pros
Easy to Use
Cons
Best Uses
Outdoor
Quick Fix
Comments about WEST System 105 Epoxy Resin:
very easy to work with
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No
3/11/2012
4.0
The epoxy worked out great!
By "Rockholt" Mick
from Rancho Murieta, CA
About Me Casual/ Recreational
Pros
Easy to Use
Protects Well
Visually Pleasing
Weather Proof
Cons
Best Uses
Outdoor
Wood Trim
Comments about WEST System 105 Epoxy Resin:
I have a '57 Rockholt runabout. The bottom was fiberglass over wood. The wood keels are mounted over the fiberglass. After 50 years of use, the boat was leaking through the screw holes in the keels. I added screws and fiberglassed the keels to the deck. I haven't worked with fiberglass in 30 years. This was simple and no longer has the strong odor. The job came out fabulous.
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7/17/2011
(2 of 3 customers found this review helpful)
5.0
Isn,t there a 1 gallon price?.
By BudK
from Long Beach Island, New Jersey
About Me Casual/ Recreational
Pros
Easy to Use
Protects Well
Cons
Best Uses
Outdoor
Wood Trim
Comments about WEST System 105 Epoxy Resin:
Have used West for many years. great product. But with only a 1 quart or 55 gallon price to choose from, ???????
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7/4/2011
5.0
As Good As It Gets
By RevRol
from Camp Kerr Lake, NC
About Me Beginner
Pros
Visually Pleasing
Cons
Best Uses
Comments about WEST System 105 Epoxy Resin:
Replaced rotten boat seats in old, but seaworthy dinghy using 105 resin/206 slow hardener with fiberglass cloth over exterior plywood. Easy to mix with respective pumps. Slow hardener permits plenty of working time for smoothing out air bubbles and fairing edges.
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5/18/2011
5.0
The Best
By Steve
from Brandon, MS
Pros
Easy to Use
Protects Well
Visually Pleasing
Weather Proof
Cons
Best Uses
Indoor
Outdoor
Quick Fix
Wood Trim
Comments about WEST System 105 Epoxy Resin:
When all else fells I use the west system
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5/13/2011
(1 of 1 customers found this review helpful)
5.0
West 1005 Epoxy
By Walt
from Shalimar, FL
About Me Advanced
Pros
Consident results
Easy to Use
Visually Pleasing
Cons
Best Uses
Furniture
Comments about WEST System 105 Epoxy Resin:
The mixed epoxy acts as a lubricant for close fitting wood joints, making the joint nearly invisable. When cured, the joint is very strong. I have been using this product for over 10 years successfully.
Price Match Promise:
If you find a lower delivered price on a new identical item in stock and available for purchase from an authorized U.S. merchant.
- email us at pricematch@jamestowndistributors.com. This offer does not include special coupons or other promotional offers.
Special order items are not stocked and are ordered direct from the manufacturer. They are non-returnable, may take 2-4 weeks, price and shipping charges subject to change.
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