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DIY Refurb

Sovereign SBR Bonding Agent - For Render, Screed & Repair

Sovereign SBR Bonding Agent - For Render, Screed & Repair

SKU: 30616318
EST Delivery Date Est Delivery between 6th Feb and 12th Feb.
£132.71 £159.25
£132.71 £159.25 £0.00
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Size

How much will I need?

Coverage required
x

We recommend adding 10% of additional product to the calculation to account for errors, damages, and obstacles in your project

Based on your total area of 0m2 (inc. 10% wastage) you will need 1 of this product (total coverage ).
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Product Information

Sovereign SBR Bonding Agent

High-Strength Styrene-Butadiene Polymer Additive for Render, Screed & Repair

A milky-white dispersion of carboxylated styrene-butadiene copolymer specially modified for use as a bonding agent and additive. Unlike PVA, it does not re-emulsify, making it ideal for waterproofing, tanking, and external applications. Provides improved adhesion, flexibility, water/salt resistance, and durability in cement-based systems.

Key Benefits

  • Superior adhesion to dense or hard-to-bond substrates—concrete, glass, metal, tile & brick
  • Enhances strength & flexibility, reducing cracking, shrinkage, dusting; improves frost resistance
  • Improved water and salt resistance, supports durable external use and tanking systems
  • Non re-emulsifiable—perfect for damp zones, waterproof renders, screeds, and concrete repairs
  • Contains antifoam & antioxidant additives to enhance mix stability and longevity
  • Boosts carbonation protection, safeguarding embedded steel in repairs; increases abrasion resistance

Product Details

  • Form: Milky-white liquid, S.G. approx. 1.01, pH 9–11
  • Solids Content: Around 47% polymer
  • Pack Size: 5 kg tub (also available in larger quantities)
  • Non-combustible & eco-friendly – water-based with no fire hazard

Typical Uses & Mix Ratios

Primer Coat
  • SBR Bonding Agent: 1 part
  • Water: 5 parts

Apply the primer to porous backgrounds. Render can be applied to either wet or dry primer.

Sealer Coat
  • SBR Bonding Agent: 1 part
  • Water: 3 parts

Apply to the rear and edges of timber before fitting and tiling to reduce moisture ingress. Do not prime the face to be tiled.

Bonding Coat (Slurry)
  • SBR Bonding Agent: 1 part
  • Water: 1 part
  • OPC (Ordinary Portland Cement): 1½ parts

Apply the bonding coat while still tacky, before applying renders or screeds.

Safety & Handling

  • Not classified hazardous, but avoid eye/skin contact; wear gloves, goggles, and suitable clothing
  • Can cause mild skin/eye irritation – rinse thoroughly and seek medical advice if necessary
  • Non-flammable, store between +5 °C and +35 °C, protect from frost and direct sun
  • Eco-aware disposal: Avoid drain contamination; dispose per regulations

Ideal For

  • Bonding renders or screeds onto dense, non-porous surfaces
  • Durable external renders, floor toppings, screeds
  • Concrete repairs (steel protection, carbonation resistance)
  • Waterproof/weak substrates—tanking, damp areas, tanking systems
Delivery Information
EST Delivery Date Est Delivery between 6th Feb and 12th Feb.

Delivery will always take place on a weekday (Mon - Fri excl. public holidays).

An exact delivery charge will be calculated at checkout based on your order and location. Delivery may be unavailable or may incur additional charges in some remote areas of Scotland and Wales.

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Frequently asked questions

How do I track my order?

As soon as your order is dispatched, you'll receive a dispatch email with delivery dates and details for your order.

If you require an update on your order, you can email customerservice@i4lgroup.co.uk with your order number for assistance.

Can I order now and pay later?

Yes, we offer a variety of flexible payment options to all our customers.

When checking out online, you'll be able to avail of multiple buy now, pay later options with Klarna or PayPal.

The flexible payment options available to you at checkout will be based on the total value of your order.

For B2B customers, you can apply for a 30-day trade credit account, and you'll also unlock:

  • Dedicated trade pricing
  • Loyalty points and rewards
  • A dedicated account manager

Do you really have the best prices online?

Yes! We even have a price match guarantee.

We are so confident that we have the best prices out there that we will match the price of any other online or local retailer.

If you find the same product cheaper elsewhere, we will match the price — just send us the quote or website link.

Read more: Price Match Guarantee

I have a large-scale project, can I get a quote?

Yes, if you are carrying out a construction project that requires a large quantity of materials, email sales@i4lgroup.co.uk with the following information and we will get back to you with your very own bespoke price quote:

  • Delivery postcode and address
  • Mobile number
  • Company name
  • A list of required materials and their quantities

Learn more on opening a trade account.

Can I open a trade account?

Yes! Trade customers can open a B2B account to unlock bespoke pricing, B2B discounts, trade credit, loyalty points, and a dedicated personal account manager.

You can learn more here: Open a Trade Account

Can I cancel or amend my order after placing it?

Yes, if your order has not yet been processed for dispatch, cancellation/ amendments should be possible.

Our team works quickly to get your order delivered as soon as possible so it is likely that your order will be processed for dispatch within 2-3 hours of purchase.

Contact us immediately via customerservice@i4lgroup.co.uk or call 020-3481-1978 during opening hours.

If you wish to amend your order after it has been processed by our team, it will be treated as a return or a separate new order.

Read more: Returns

What is your returns policy?

Changed your mind about your order? no problem! we offer a 14 day returns period after your order is delivered.

To avail of this your order must be unused, in its original packaging, and suitable for resale.

Refunds are issued immediately after the goods are received and inspected by our team.

If an item arrives damaged or incorrect, you must notify us within 48 hours of delivery.

Prior approval is needed before returning any goods – do not return without authorization.

Special order items are exempt from returns.

Read more: Returns

Why Choose Us?

Factors Build4Less Other Stores
Customer service Easy to reach, and eager to help Difficult to contact
Shipping speed Fast and organised Unpredictable
Competitive pricing Price match guarantee What you see is what you get
Loyalty program Points + exclusive deals Basic discounts
Expert advice Free 1-on-1 sessions Self-service only
Trade accounts Bespoke pricing, trade credit, and dedicated account manager none available