West System 105 Epoxy Resin 1Kg (105-A)

West Systems

In Store Price
£26.00

Special Online Price
£23.25

Part Number: MIWS105A

  • COVID 19 Disruption
  • Description
  • Questions
  • Reviews
  • Delivery
  • Returns
  • Age Verification
  • Price Match

[COVID19 DISRUPTION NOTICE]

Due to the "LOCKDOWN" situation imposed Thursday 5th November 2020, we are anticipating a small delay in processing of orders and subsequent shipping.

Whilst we will try our best to continue in a business as usual, the time is again upon us when we must close our retail showroom doors temporarily to support the Governments COVID19 Strategy. Throughout this temporary closure we will still be shipping items from all of our warehouses, but it may at times be subject to a small delay.

The quickest way to get an answer to any questions you may have is to email us on shop@chasnewensmarine.co.uk Alternatively should you wish to actually speak to a member of our team, please call us on 02087884587 and Choose Option 1.

 

 

105 Epoxy Resin

105 Epoxy Resin is the base material on which all WEST SYSTEM 105 System epoxy compounds are built. It is a clear, pale yellow, low-viscosity liquid epoxy resin. Blended with hardener at the proper ratio, it cures to a hard, solid plastic with superior physical properties. Based on which hardener you choose, it cures at a wide range of temperatures.  Once cured, it forms a high-strength solid that is functionally waterproof, and highly resistant to moisture vapor.

We designed 105 Epoxy Resin to wet out and bond with wood fiber, fiberglass, and reinforcing fabrics. It also bonds well with a variety of metals.

Epoxy vs. Esters

We’ve formulated 105 Epoxy Resin (and its corresponding hardeners) without volatile solvents. Unlike polyester or vinylester resins, our epoxy virtually does not shrink after curing. With a relatively high flash point and no solvent odor, it’s safer to use than styrenated resins.

Thickening Epoxy

Modifying this epoxy with WEST SYSTEM fillers creates an excellent structural adhesive or fairing compound. You choose the filler that suits your project. Epoxy thickened with adhesive (high-density) fillers makes structural bonds, bridges gaps, and fills voids. Epoxy thickened with fairing (low-density) fillers is easily sanded and shaped after it cures.

Coating

This epoxy is also a great coating material.  Applied with a roller, it offers excellent thin-film characteristics. It will flow out and self-level without “fisheyeing.” By combining it with blush-free 207 Special Clear Hardener, you can create a natural finish. You’ll just need to add a couple of coats of varnish for UV protection. This is a good alternative that builds mil thickness quickly, saving time and effort. The results are long-lasting.

105 Resin’s viscosity is approximately 1000 centipoise (cp) at 72 F (22C).

Pair 105 Epoxy with corresponding letter size of 205 Fast Hardener, 206 Slow Hardener, 209 Extra Slow Hardener or 207 Special Clear Hardener.

 

More Facts about WEST SYSTEM Epoxy

Using gel coat over WEST SYSTEM 105 Epoxy Resin and Hardener

It’s a myth that if you plan to gel coat over a repair, you must make the repair with polyester. We’ve used gel coat over epoxy for decades. It’s in our fiberglass boat repair videos and discussed it our magazine, Epoxyworks.

There are three key factors for success with gel coat over epoxy:

  1. Mix your epoxy resin and hardener at the proper ratio (Mini Pumps make this a snap).
  2. Allow the epoxy to fully cured.
  3. Before applying gel coat, remove any amine blush from the cured epoxy surface. Amine blush is simply an easily removed wax-like film that can form as a byproduct of the curing process. WEST SYSTEM 105 Resin/207 Special Clear Hardener does not blush.

Gel coat manufacturers shy away from approving the use of non-air inhibited gel coat over epoxy because they’re concerned amine blush will interfere with the gel coat’s cure. All you need to do to remove the blush is wash the surface with plain water. It’s then ready for you to prep for paint or gel coat.

This process is even easier if you use Release fabric. This fabric is applied to uncured epoxy, protecting the surface from contamination. As the epoxy cures, any blush will form on the outside of the release fabric. Simply remove the release fabric after cure, and it will take the blush with it. The resulting surface is ready for you to prepare it for paint or gel coat.

Epoxy’s penetration into wood

Epoxy does more than sit on the surface of the wood. Some epoxy will remain on wood surfaces, and some of it will penetrate into the wood. The amount of penetration depends mostly on how the wood fibers are oriented. Face grain will not absorb nearly as much epoxy as end grain. But since WEST SYSTEM Epoxy is very strong and an excellent adhesive, it strengthens the wood and makes it waterproof.

105 Epoxy Resin batch size and cure speed

You need to know that in larger quantities, epoxy cures much faster. This is because epoxy generates heat as it cures and also cures faster at higher temperatures. This snowball effect increases until the epoxy cures—which in very large batches could take only a couple of minutes. Large pots of mixed epoxy can generate enough heat to cause a runaway exothermic reaction. This can include, smoking, melting the mixing cup or even starting a fire. Spreading epoxy thin allows the heat to dissipate and slows its cure.

Epoxy casting 

WEST SYSTEM Epoxy has a very low percentage of shrinkage. In fact, the standards used to calculate shrinkage of other resins (polyester and vinyl ester) aren’t used with WEST SYSTEM because it shrinks so little to measure that way.

When epoxy is used to fill holes drilled into wood, it will soak into the end grain. This might look like shrinkage, but it’s not.

Back in the late ’70s and early ’80s, Gougeon Brothers Inc. manufactured over 4,000 wind turbine blades and their molds using WEST SYSTEM Epoxy. It was commonplace to see a 70-foot long mold shrink 3/32″ over the entire 70-foot length. That represents shrinkage of just .01% on a laminate consisting of fiberglass and WEST SYSTEM Epoxy.

Avoiding exotherm when casting

When casting epoxy, heat buildup can become an issue. Excessive heat can make WEST SYSTEM Epoxy can shrink some. Pouring epoxy in great depths creates the potential for the epoxy to get very hot due to the exothermic reaction resin and hardener have. While exotherm is a normal part of the curing process, you must always keep it under control. Do this by using smaller pours when casting, and working in a cool environment.

Any shrinkage that does occur generally happens while the epoxy is still liquid, but when an intense amount of heat is present, epoxy doesn’t stay liquid for very long. As the heat dissipates, the difference in temperature between the top and bottom of the casting can shock the now solid epoxy and it may crack. To avoid this, make deep castings in layers.

Adding extra hardener (don’t)

While adding extra catalyst to polyester resins can lead to a faster cure, you should never add extra hardener to epoxy resin. Epoxy reaches cure when the resin molecules cross-link with hardener molecules. When there is too much of either resin or hardener, unlinked molecules are left over. This can result in uncured epoxy or compromised cure strength. Always mix epoxy resin and hardener as close as you can to the recommended ratio.

Clamping force

Unlike traditional wood glues, WEST SYSTEM Epoxy is stronger than wood. Because of this, it is beneficial to have some epoxy between the objects you are gluing together whether they are wood, fiberglass, or other materials. As long as the epoxy is contacting the entire surface of both substrates, no clamping pressure is needed.

The goal clamping is to simply ensure the epoxy contacts the entire surface for the duration of the cure time. Moderating clamp force is all you need. If you aren’t using a filler, and apply too much clamping force, this can result in a glue-starved joint. This makes future joint failure much more likely. Glue starved joints are weaker than their counterparts. Avoid glue-starved joints by following the one- or two-step bonding method.

Filler and Epoxy Strength

While certain fillers will increase the density of epoxy, this does not correlate to higher physical properties or increased adhesion strength. Epoxy is strongest without filler added to it, but the fillers are necessary to:

  • Increase the viscosity of the mix
  • Bridge gaps
  • Prevent the epoxy from soaking too far into the wood
  • Prevent glue-starved joints

Epoxy and Rotted Wood

Rot eats away the cellulose fiber in wood. Cellulose is the structure of the wood. Replacing it is not as simple as brushing on a coat of solvent-thinned epoxy. Solvented epoxy may replace some of the strength, but isn’t a permanent repair—it won’t restore the strength of the wood fibers. To make a permanent repair, replace the entire rotten area with fresh wood and sealed with epoxy. Addressing rot this way will make the repair area stronger than it was before the rot occurred.

Why remove rot?

Rot needs four major components in order to continue growing:

  1. Food
  2. Moisture
  3. Oxygen
  4. Warmth

Cutting off just one of these components is enough to cause the rot to go dormant. Solvented epoxies are supposed to cut off rot’s food source by encapsulating and contaminating the wood that the rot spores consume. However, the remaining three components: moisture, oxygen, and warmth, can still penetrate wood coated with solvented epoxy.

This is because solvented epoxy is a poor moisture barrier. Rot spores will remain in the wood, and even when encapsulated in solvented epoxy, they will only go dormant. Un-isolated rot pores will continue devouring the cellulose, causing more rot.

This is why we recommend removing the rotten wood and replacing it with fresh wood that is sealed with several coats of WEST SYSTEM Epoxy.

Customer Questions & Answers

Have a Question?

Be the first to ask a question about this.

Ask a Question

Customer Reviews

Based on 2 reviews
100%
(2)
0%
(0)
0%
(0)
0%
(0)
0%
(0)
D
D.G.
U
U.W.
West epoxy system is excellent!

Delivery

Our Mail Order team ship chandlery, yacht parts and sailing clothing around the world. We try to use the best value couriers available, and we will endeavour to get your products to you as quickly and as cost effectively as possible. 

As with everything automatic, sometimes it might not present you with the best value price, please feel free to contact our helpful team who will endeavour to provide you with our best price for shipping to your address.

UK Standard Delivery

Please use the checkout process to get an accurate shipping quote for your cart, all of our rates are automatically calculated based upon your selections.

As with everything automatic, sometimes it might not present you with the best value price, please feel free to contact our helpful team who will endeavour to provide you with our best price for shipping to your address.

International Delivery

International Delivery is calculated based on a series of complex formulae at checkout and includes options such as UPS International. If you cannot see a rate at checkout, please contact us.

Delivery further information

The delivery charge is automatically added to your order and you will see the total amount you have to pay before you confirm the order. Unfortunately we have to charge carriage but we do attempt to keep it to a minimum where possible

All orders leaving us require a signature, and the delivery could take place any time between 8am and 6pm depending on the courier used. If you are liable to be out, please give an alternative delivery address or type instructions into the notes section as you place your order.

Standard Service; We will aim to dispatch goods within 3 working days. Delivery on the standard service is via courier, will require a signature and we aim to deliver within 5 working days. This service will only arrive on working days.

Courier delivery; The majority of our parcels will be sent via a courier, the bulk of which are with APC Streetwise. Please be aware that they advertise their delivery times as anywhere between 8am - 6pm Monday to Friday. We are not able to dictate to them a time slot. And in most cases a signature will be required.

New! For 2020 – Putney EmbankmentClick & Collect service; New for 2020 finds our first ever collection point on the Putney Embankment. Please select Pick Up at checkout to activate the service

NB; For orders to mainland Europe and Rest of World, the cost for carriage is calculated on order package weight and final destination. The price given at checkout is a guide only and an accurate postage cost will be calculated and invoiced to you if a supplement is required. If you would like to know this figure before despatch please feel free to contact us for a quote. Please be advised that if your order is sent via courier outside of the EU you may need to pay for import/custom taxes after the order has been delivered to you. This is standard procedure by the courier to ensure that your order is delivered to you as soon as possible and not delayed in customs. These charges are solely dependent on your local customs office and the courier, we have no control over these charges. We would kindly suggest contacting your local customs office for more information and advice. Additional charges for customs clearance must be borne by you; unfortunately, we have no control over these charges and cannot predict what they may be. We are unable to reimburse any costs incurred regardless of the circumstances.

ANTIFOUL & PAINT ORDERS; Please be aware that we can only send antifoul & Paint products within GB Mainland. We CANNOT send antifoul & paint outside of GB Mainland. If you have any questions regarding this please feel free to contact our Mail order department.

LIFEJACKETS & CO2 CANNISTERS; Please be aware that we cannot currently send lifejackets with CO2 cannisters included outside of GB Mainland

LIQUIDS & CHEMICALS; Please note we are unable to deliver liquids or chemicals overseas or to highlands and island addresses. We will also have to use a courier service within GB Mainland for liquids or chemicals.

SALE OF KNIVES; In accordance with UK Law (The Offensive Weapons Act 1996), we are unable to sell knives to anyone under 18 years of age. We are unable to send knives to overseas destinations. You must upload a copy of a valid identity document to your order at time of ordering or your order will be cancelled. Knives must be sent on a signature courier service. Valid forms of ID are EU Passports, EU Photocard Driving Licence, MOD Form 90 ID Card, EU Member State National Identity Card, “PASS” ID Cards.

 

Last Updated 2nd September 2020

Our returns policy lasts 30 days. If 30 days have gone by since your purchase, unfortunately we can’t offer you a refund or exchange.

To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging.

To complete your return, we require a receipt or proof of purchase.

Please do not send your purchase back to the manufacturer.

To read our full returns and exchanges policy, please click here.

 

Some items we sell may from time to time be subject to Age Restrictions imposed under UK Law. 

Where this affects your purchase, you will be contacted by a member of our sales team, you will be required to provide us with a copy of photographic identification, from the list below.  A valid photographic ID will also need to be shown to the driver on delivery, along with a signature.

By sharing your ID, you are helping us to ensure items that are intended for people over 18 end up in the right hands. Due to the importance of verifying age when delivering these products, age restricted items can only be delivered to the customer’s address, they cannot be delivered to a neighbour’s address or left in a safe place. In addition, they can’t be delivered to a locker or Pickup Point.

If an adult over the age 18 is not available at the address, or if an adult has not been able to show valid photo identification, the item will be returned by our couriers for re-delivery the following day. If your order is being delivered to a commercial address or residential apartment block, the receptionist, concierge or mailroom attendant receiving your parcel will need to provide a valid ID, showing they are aged 18 or over.

If they can’t, the parcel will be returned to our couriers for re-delivery the following day.

List of acceptable photo identification:

  • A passport
  • A European Union (photo card) driving licence
  • Ministry of Defence Form 90 (a defence identity card issued to serving military)
  • National Identity card issued by European Union Member State (other than the United Kingdom), and Norway, Iceland, Liechtenstein or Switzerland
  • A biometric immigration document (issued by The Home Office to individuals going through different stages of the immigration process as a residence permit.).
  • A photographic identity card bearing a national Proof of Age Standard Scheme (PASS) hologram

All information we receive about customers is treated in accordance with our Privacy Notice, which can be found on our website.

Thank you for your understanding as we do our part in ensuring compliance with UK Law.

"We're committed to providing our customers with the best possible prices across our product range."

Our Price Match Guarantee means that if you find any of our chandlery items at a lower advertised price elsewhere, we will match the price for you, if we can, subject to the following:

  • The product is identical to ours in brand, colour, size and model number
  • The price must show clearly on the competitor online site
  • The item must be in stock and available for immediate purchase with the authorised stockist able to complete delivery within 5-7 days
  • It may take up to 48 working hours to verify the price match, once verified your purchase must be made within 7 days. 

TERMS & CONDITIONS

  1. Price Match Guarantee applies only to chandlery items, and specifically excludes Outboard Engines, Dinghies, Boats, and Trailers,
  2. We only Price Match on items available on our website.
  3. Whilst we endeavour to match all prices and submissions, there may be on occasion a reason why we decline to offer to Price Match Guarantee on any item, this is at our sole discretion and there will be no right of appeal.
  4. For the Price Match Guarantee to apply, the product must be identical (i.e. same brand, model, style, colour and finish), not damaged, not pre-owned and sold directly through a stockist in the UK in £GBP.
  5. The Price Match Guarantee cannot be used in conjunction with any other promotion, or discount offer including but not limited to discount codes or multi-buy offers.
  6. The Price Match Guarantee is available on items which are currently held in stock by a UK retailer, available for purchase immediately (for delivery within 5-7 days). It excludes products which specify a delivery time of a week or more.
  7. Price Match Guarantee is not available to corporate customers. We reserve the right to restrict our Price Match Guarantee on each item to one per customer.
  8. Credit is not available on Price Match Guarantee purchases.
  9. The  Price Match Guarantee will not apply if the selected stockist or branch of a stockist is in administration or closing down.
  10. Items sold as part of any product bundles at discounted prices or with free items (i.e. buy one get one free) will not be matched. 
  11. The Price Match Guarantee cannot be used to match Tax Free Shopping or Duty Free prices.
  12. This offer may be cancelled, withdrawn or amended at any time, the posting of such a notice on this page, shall be considered sufficient notice of change or cancellation.
  13. Our decision on any Price Match Guarantee application is final. Once we have sent you our decision email, no further discussion around pricing will be entertained.
HOW TO APPLY 
  1. You must email shop@chasnewensmarine.co.uk, applications made to any other email address may not be considered.
  2. Your email should include the following information:
  • Product Name and Brand
  • Our Product Part Number
  • Our Product Price
  • The name of the retailer you would like us to consider a price match against
  • Their Product Part Number
  • Their Product Price
  • A link to their website clearly showing the part in stock and available for delivery, the relevant pricing structure and a comprehensive description.

Please Note: emails which do not include all of the above information will be considered incomplete and may not be processed.

 

 

Featured Brands

Sale

Unavailable

Sold Out