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The West System 406 Colloidal Silica is an incredibly versatile and adaptable epoxy thickening additive and filler that's ideal for smooth finishes, general epoxy bonding and filleting. It works by controlling the thickness of epoxy, preventing sagging and runoff, while also thickening and improving the epoxy mixture to improve strength, abrasion resistance and bonding properties.
Recognised as one of the most versatile and adaptable fillers in the West System range, it produces a smooth, easily workable mixture for professional-quality finishes. When used by itself, it creates a strong, translucent white mixture with a smooth, creamy texture. This makes it an excellent choice for fillets and general bonding where a clean and durable result is required. West System 406 can also be blended with other fillers to improve strength, abrasion resistance and consistency in fairing compounds.
For colour-matched fillets, West System 406 provides a perfect base. By first thickening epoxy with 406 to a mayonnaise-like consistency and then adding wood sanding dust, you can achieve a natural tone that blends seamlessly with surrounding timber. The final shade can be adjusted by the amount of dust added, ranging from lighter to darker tones, offering flexibility to match the look of varnished or epoxy-coated wood surfaces.
Because the uncured mixture closely reflects its final cured appearance, achieving a consistent natural finish is straightforward, making West System 406 Colloidal Silica a popular choice for those seeking to enhance the strength, durability and beauty of wood structures.
Designed for fillets, general bonding, abrasion resistance, structural fortification & thickening.
Project Uses: Thicken blended resin/hardener and create a multi-purpose adhesive for smooth finishes, overhead or vertical applications, increasing strength of fairing compounds & joints.
Code: 64
Fibreglass Supplies use Royal Mail, APC Overnight and the National Hazardous Pallet Network for our Next Day Delivery Services.
Royal Mail
Orders of up to 2kg will usually be sent using a Royal Mail First Class Service for National Next Day Delivery.
APC Overnight
Orders over 2kg and up to 30kg will be sent using a Fully Tracked Next Day Service using APC Overnight. Some smaller Roofing Kits that weigh up to 30kg in Total would be sent on this service. This includes Resins, Gelcoats and Topcoats which are classed as Hazardous and are decanted into 5kg Tins or Pales to comply with the Transportation of Hazardous Goods Act.
Pallet Network
All our larger orders by weight would usually be sent using the National Pallet Network. Non Hazardous Items can be sent using either the Pallet Network or APC Overnight.
All Hazardous goods over 30kg (which includes Roofing Kits over 30kg in total weight) are usually sent using the National Pallet Network on a Fully Trackable Next Day Delivery Service.
Click & Collect
All orders are eligible for Click & Collect. Pick up your items conveniently from our Cattedown Store, available Monday to Friday between 7:30 am and 4:30 pm (excluding Bank Holidays).
NB - Please note that our Direct Control of the Delivery Element extends to making sure we pick pack and dispatch all orders on time. As we have no Direct Control over the performance of any individual courier we would not be responsible for refunds due to the late arrival of any order.
We always work hard with customers to overcome any issues that arise so please call us if you do have any concerns with regard to tight delivery deadlines so that we can provide great advice if needed.
Please read our Returns policy laid out below.
Under the Consumer Contracts Regulations 2014 you are entitled to return goods within 14 days of delivery for a refund of the cost of the goods. The delivery costs and any packaging are not included in the refund. The returned goods should be in the original containers and unopened. It is the customers responsibility to pay for the cost of returning goods to our Business Premises.
Some of our products are made to order and as such once ordered are non refundable and non returnable. These include coloured gelcoats, topcoats and resins.
These Consumer Regulations do not apply to business purchases (B2B). However we will always help in any way and look to find a suitable and mutually acceptable solution should any issues arise through the order process.
It is the customers responsibility to understand the suitability of the product before its use. Technical and Safety Data Sheets are available for all products where applicable. These can be found on most product description pages or if not are available on request. If you are unsure please do not hesitate to contact us for expert advice and product suitability and application.
To organise a return please contact us on the following.