Carboxylated SBR Polymer Dispersion for Renders, Screeds & Tanking Systems
A high-solids styrene-butadiene polymer that won’t re‑emulsify like PVA, making it perfect for both internal and external applications—even on damp substrates. Widely used with Hey’di K11 tanking systems, this bonding agent enhances adhesion, flexibility, water and salt resistance, toughness, carbonation protection, and suction control on highly porous backgrounds :contentReference[oaicite:1]{index=1}.
Key Benefits
-
Excellent adhesion to dense or porous substrates—concrete, brick, tile, steel, glass.
-
Reduces cracking, shrinkage & dusting, while boosting frost and abrasion resistance.
-
Improved water and salt resistance, ideal for external and salt-exposed applications.
-
Non re‑emulsifiable—perfect for waterproofing, damp zones, and tanking systems.
-
Site suction control on highly porous backgrounds—eliminates dusting.
Product Details
-
Form: Milky-white dispersion with high solids polymer content.
-
Pack Size: 5 kg (also available in 10 kg)
-
Water-based & non-combustible; store between +5 °C and +35 °C, protect from frost/sun.
Mix Ratios & Uses
-
Primer (seal dust control): 1 part SBR : 5 parts water – controls suction on porous substrates :contentReference[oaicite:9]{index=9}
-
Sealer (timber edges): 1 part SBR : 3 parts water – reduces moisture ingress behind tiles (avoid tile face).
-
Bonding slurry: 1:1 SBR:water with 1½ parts OPC – apply tacky before render or screed.
Extensively used in cementitious mortars, concrete repairs, and Hey’di K11 waterproof systems.
Safety & Storage
-
Not classified hazardous; gloves & eye protection recommended.
-
Non-irritant, rinse with water if contact occurs
-
Non‑flammable; store at +5 °C to +35 °C; avoid frost & direct sunlight.
-
Dispose responsibly—avoid drain contamination.
Ideal For
- Bonding renders, screeds, and waterproof coatings to porous or dense surfaces
- External and salt-exposed areas (e.g. basements, tanking systems)
- Concrete repair mortars—enhancing steel protection & carbonation resistance
- Priming/sealing timber edges before tiling or rendering
Sovereign
Cementitious & Epoxy Tanking
Delivery is free to Mainland England and Wales. Deliveries are chargable to Scotland.
Once the order is placed, our courier will call you within 3 working days to arrange a delivery date. If you do not hear from the courier within 3 days, please get in touch with us. The majority of deliveries are made within 7 days, occasionally a little longer during peak periods.
Deliveries are made between 08:00 and 18:00 on the day, we request the driver calls you one hour before with an advised time.
Delivery is made via a kerbside tail lift lorry, we cannot deliver to sloping ground as the tail lift must be able to lay flat.
The road must be wide enough for a lorry to fit down and free from obstruction, if there are any access restrictions, please contact us.
Deliveries must be signed for, please report any damages to us within 24 hours.
We offer all bricks with a tail lift offloading service, Please familiarise yourself with the information below.
Crane offloading is available as a premium service for some bricks.

All of our C16 and C24 graded timber is regularised
Regularised timber is timber that has been processed to have a uniform shape and size. This means that the wood has been sawn and planed to remove any irregularities and ensure that each piece of wood has consistent dimensions. Regularised timber is often used in construction, particularly in the framing of buildings, as it is easier to work with and can be more efficiently installed than irregularly shaped timber.
We have one of the largest ranges of timber lengths, dimensions and grades available to buy online.
The variation you require will determine the exact lead time and delivery method.
Most orders arrive within 3-4 days, the maximum is 7 days. Please get in touch before you order if you need a specifc delivery date.
Delivery charges vary by postcode. To find out the delivery charge, add the item(s) you require to your basket and select CALCULATE SHIPPING at the bottom of the page.
Some orders are delivered on our own vehicles based in Leicestershire and Cheshire. We also use carriers including Yodel and Tuffnells. For some sizes and locations we use regional distributors.
If you'd prefer crane offloading rather than tail lift vehicle offloading for your brick order then this service is available for the majority of bricks that we sell. Charges are shown at checkout.
For deliveries of less than 6 packs then Taillift offloading is normally a more cost effective option
Downloadable information can be found here:

Armstrong Cheshire supply the full range of Catnic Lintels. If you don't see the lintel you need on our website, choose from the Catnic Lintel Selector Brochure and give us a call 01625 322269
Downloadable information can be found here:
Carboxylated SBR Polymer Dispersion for Renders, Screeds & Tanking Systems
A high-solids styrene-butadiene polymer that won’t re‑emulsify like PVA, making it perfect for both internal and external applications—even on damp substrates. Widely used with Hey’di K11 tanking systems, this bonding agent enhances adhesion, flexibility, water and salt resistance, toughness, carbonation protection, and suction control on highly porous backgrounds :contentReference[oaicite:1]{index=1}.
Key Benefits
-
Excellent adhesion to dense or porous substrates—concrete, brick, tile, steel, glass.
-
Reduces cracking, shrinkage & dusting, while boosting frost and abrasion resistance.
-
Improved water and salt resistance, ideal for external and salt-exposed applications.
-
Non re‑emulsifiable—perfect for waterproofing, damp zones, and tanking systems.
-
Site suction control on highly porous backgrounds—eliminates dusting.
Product Details
-
Form: Milky-white dispersion with high solids polymer content.
-
Pack Size: 5 kg (also available in 10 kg)
-
Water-based & non-combustible; store between +5 °C and +35 °C, protect from frost/sun.
Mix Ratios & Uses
-
Primer (seal dust control): 1 part SBR : 5 parts water – controls suction on porous substrates :contentReference[oaicite:9]{index=9}
-
Sealer (timber edges): 1 part SBR : 3 parts water – reduces moisture ingress behind tiles (avoid tile face).
-
Bonding slurry: 1:1 SBR:water with 1½ parts OPC – apply tacky before render or screed.
Extensively used in cementitious mortars, concrete repairs, and Hey’di K11 waterproof systems.
Safety & Storage
-
Not classified hazardous; gloves & eye protection recommended.
-
Non-irritant, rinse with water if contact occurs
-
Non‑flammable; store at +5 °C to +35 °C; avoid frost & direct sunlight.
-
Dispose responsibly—avoid drain contamination.
Ideal For
- Bonding renders, screeds, and waterproof coatings to porous or dense surfaces
- External and salt-exposed areas (e.g. basements, tanking systems)
- Concrete repair mortars—enhancing steel protection & carbonation resistance
- Priming/sealing timber edges before tiling or rendering
Sovereign
Cementitious & Epoxy Tanking
Delivery is free to Mainland England and Wales. Deliveries are chargable to Scotland.
Once the order is placed, our courier will call you within 3 working days to arrange a delivery date. If you do not hear from the courier within 3 days, please get in touch with us. The majority of deliveries are made within 7 days, occasionally a little longer during peak periods.
Deliveries are made between 08:00 and 18:00 on the day, we request the driver calls you one hour before with an advised time.
Delivery is made via a kerbside tail lift lorry, we cannot deliver to sloping ground as the tail lift must be able to lay flat.
The road must be wide enough for a lorry to fit down and free from obstruction, if there are any access restrictions, please contact us.
Deliveries must be signed for, please report any damages to us within 24 hours.
We offer all bricks with a tail lift offloading service, Please familiarise yourself with the information below.
Crane offloading is available as a premium service for some bricks.

All of our C16 and C24 graded timber is regularised
Regularised timber is timber that has been processed to have a uniform shape and size. This means that the wood has been sawn and planed to remove any irregularities and ensure that each piece of wood has consistent dimensions. Regularised timber is often used in construction, particularly in the framing of buildings, as it is easier to work with and can be more efficiently installed than irregularly shaped timber.
We have one of the largest ranges of timber lengths, dimensions and grades available to buy online. The variation you require will determine the exact lead time and delivery method.
Most orders arrive within 3-4 days, the maximum is 7 days.
Please get in touch before you order if you need a specific delivery date.
Delivery charges vary by postcode. To find out the delivery charge, add the item(s) you require to your basket and select CALCULATE SHIPPING at the bottom of the page. Some orders are delivered on our vehicles based in Leicestershire and Cheshire. We also use carriers including Yodel and Tuffnells. For some sizes and locations, we use regional distributors.
If you'd prefer crane offloading rather than tail lift vehicle offloading for your brick order then this service is available for the majority of bricks that we sell. Charges are shown at checkout.
For deliveries of less than 6 packs then Taillift offloading is normally a more cost effective option
Downloadable information can be found here:
Armstrong Cheshire supply the full range of Catnic Lintels. If you don't see the lintel you need on our website, choose from the Catnic Lintel Selector Brochure and give us a call 01625 322269
Downloadable information can be found here:
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Sovereign
Sovereign Hey’di Bonding Agent Carboxylated SBR Polymer Dispersion for Renders, Screeds & Tanking Systems
£64.00
Unit price
/
Unavailable
Carboxylated SBR Polymer Dispersion for Renders, Screeds & Tanking Systems
A high-solids styrene-butadiene polymer that won’t re‑emulsify like PVA, making it perfect for both internal and external applications—even on damp substrates. Widely used with Hey’di K11 tanking systems, this bonding agent enhances adhesion, flexibility, water and salt resistance, toughness, carbonation protection, and suction control on highly porous backgrounds :contentReference[oaicite:1]{index=1}.
Key Benefits
-
Excellent adhesion to dense or porous substrates—concrete, brick, tile, steel, glass.
-
Reduces cracking, shrinkage & dusting, while boosting frost and abrasion resistance.
-
Improved water and salt resistance, ideal for external and salt-exposed applications.
-
Non re‑emulsifiable—perfect for waterproofing, damp zones, and tanking systems.
-
Site suction control on highly porous backgrounds—eliminates dusting.
Product Details
-
Form: Milky-white dispersion with high solids polymer content.
-
Pack Size: 5 kg (also available in 10 kg)
-
Water-based & non-combustible; store between +5 °C and +35 °C, protect from frost/sun.
Mix Ratios & Uses
-
Primer (seal dust control): 1 part SBR : 5 parts water – controls suction on porous substrates :contentReference[oaicite:9]{index=9}
-
Sealer (timber edges): 1 part SBR : 3 parts water – reduces moisture ingress behind tiles (avoid tile face).
-
Bonding slurry: 1:1 SBR:water with 1½ parts OPC – apply tacky before render or screed.
Extensively used in cementitious mortars, concrete repairs, and Hey’di K11 waterproof systems.
Safety & Storage
-
Not classified hazardous; gloves & eye protection recommended.
-
Non-irritant, rinse with water if contact occurs
-
Non‑flammable; store at +5 °C to +35 °C; avoid frost & direct sunlight.
-
Dispose responsibly—avoid drain contamination.
Ideal For
- Bonding renders, screeds, and waterproof coatings to porous or dense surfaces
- External and salt-exposed areas (e.g. basements, tanking systems)
- Concrete repair mortars—enhancing steel protection & carbonation resistance
- Priming/sealing timber edges before tiling or rendering