Everbuild Opti-Mix 3 in 1 Render Additive 1L
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The Everbuild Opti-Mix 3-in-1 Render Additive is a high-performance, multi-purpose solution designed to enhance traditional sand and cement render mixes. Formulated for use by professionals and DIYers alike, this concentrated additive offers waterproofing, plasticising, and salt inhibitor properties in a single, easy-to-use product.
Key Features:
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3-in-1 Performance: Acts as a waterproofer, plasticiser, and salt inhibitor.
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Highly Concentrated: Up to 25 times stronger than standard products—one 1L bottle can treat up to 250 litres of mortar.
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Improves Workability: Enhances the plasticity of render, making it easier to apply and spread.
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Reduces Cracking: Minimises water content without compromising workability, helping to reduce shrinkage and cracking.
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Water-Resistant Finish: Increases resistance to water ingress for longer-lasting protection.
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Efflorescence Control: Inhibits the formation of salts and surface staining.
Ideal For:
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External sand and cement rendering
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Scratch coats and top coats
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Waterproofing render applications
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Use in areas prone to damp or salt exposure
Usage Instructions:
Simply dilute the additive in water as directed and add to your render mix. Always follow the manufacturer’s guidelines for optimal results.
Coverage:
Approximately 250 litres of mix per 1 litre of additive (coverage may vary depending on mix ratios and conditions).
Product Safety:


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Causes serious eye damage.
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Causes serious eye irritation.
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Causes skin irritation.
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Use biocides safely. Always read the label and product information before use.
Delivery Information:
We aim to process and dispatch all orders within 1-2 business days on local delivery. Once your order has been shipped, you will receive a confirmation email.
Please note: Delivery times may vary due to external factors such as customs delays or high-demand periods.
Nationwide Delivery varies with supplier: We will have this disclosed on specific products from our suppliers on their delivery times.
Local Shipping Costs:
Shipping costs are calculated at checkout based on your location and order weight. We offer free shipping on orders over £150.
Returns & Refunds Information:
We want you to be happy with your purchase. If you're not satisfied, we accept returns or exchanges within 14 days of delivery.
To be eligible for a return:
· The item must be unused, in original condition, and in original packaging.
· Proof of purchase is required (e.g., order number or receipt).
· The customer must return the product to store.
Return Process:
1. Email us at [email protected] with your order number and reason for return.
2. Once approved, you will receive a refund.
Refunds:
Refunds will be processed within 3-4 business days after we receive your returned item. The refund will be issued to your original payment method.