Product Data Sheet
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SikaBond® SBR+

Latex based waterproof bonding agent, primer and mortar admixture

SikaBond® SBR+ is a styrene-butadiene co-polymer, which has numerous uses as an admixture, primer, bonding agent and sealer for use in areas subject to humidity, dampness and water contact. Improves water resistance of cement mixtures by forming a reinforcing polymer that increases long term durability and flexibility of the mix on renderings and floor screeds. An admixture for cement and concrete applications, including repair and renovation, surfacing of floors and bonding generally. It contains anti-foam to control the density of cementitious mixes.

  • Excellent adhesion to steel and concrete. Adheres well to brick, tiles, glass, asphalt, wood, expanded polystyrene and most building materials.
  • Mixes may be applied in much thinner sections.
  • Excellent resistance to water and water vapour.
  • A high level of resistance to salt permeation.
  • Increased toughness and flexibility.
  • Reduced surface dusting of concrete.
  • Prevents bleeding.
  • Enhanced corrosion protection.
  • Resistant to many chemicals and to mineral oils.
  • Reduced water: cement ratio for equivalent workability.
  • Improved frost and abrasion resistance.
  • Freeze thaw stable passing 5 cycles at -15 °C to +20 °C.
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Product Data Sheet
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Usage

  • Concrete repair.
  • External rendering.
  • Waterproofing and tanking.
  • For corrosion protection of steel.
  • Silage pit lining and protection.
  • Admixture for mortar, screeds and renders.
  • Bonding agent for screeds and renders.
  • Primer and sealer in tiling applications.
  • Recommended for exterior use, unlike most PVA bonding aids.
  • Flexibliser for cementicious based tile adhesive when tiling on wooden or asphalt floors.
 

Advantages

  • Excellent adhesion to steel and concrete. Adheres well to brick, tiles, glass, asphalt, wood, expanded polystyrene and most building materials.
  • Mixes may be applied in much thinner sections.
  • Excellent resistance to water and water vapour.
  • A high level of resistance to salt permeation.
  • Increased toughness and flexibility.
  • Reduced surface dusting of concrete.
  • Prevents bleeding.
  • Enhanced corrosion protection.
  • Resistant to many chemicals and to mineral oils.
  • Reduced water: cement ratio for equivalent workability.
  • Improved frost and abrasion resistance.
  • Freeze thaw stable passing 5 cycles at -15 °C to +20 °C.

Packaging

2.5 L, 5 L and 25 L Jerry Can.

1000 kg IBC

Colour

White liquid.

Product Details

Product Information

Shelf Life

12 months from date of manufacture when stored according to manufacturer’s instructions in original, unopened containers.

Storage Conditions

SikaBond® SBR+ is best stored at moderate (+5 to +30 °C) temperatures to avoid the possibility of permanent damage occurring due to prolonged heat or excessive cold. However if frozen, the latex should be thawed slowly. SikaBond® SBR+ should preferably be stirred before use.
SikaBond® SBR+ contains sufficient bactericide to preserve the latex under normal storage conditions.

Density

approx. 1.02 g/cm3

pH-Value

approx. 9
Technical Information

Chemical Resistance

Resists mild acids, alkalis, sulphates, chlorides, urine, dung, lactic acid, sugar, etc.

Application

Application steps

MIXING

Mixing procedures for topping and screeds containing Sikabond® SBR+ are similar to those used to conventional compositions, with gauging water partly replaced by Sikabond® SBR+. However, mixing time should be minimised to limit air entrainment. Mixing should be carried out in a forced action mixer. The usual procedure is to pre-mix sand and cement in the mixer, pour in the Sikabond® SBR+, mix for 1 - 3 mins, then slowly add water to the required consistency.
NB. Over-addition of water causes rapid thinning of latex modified mortars owing to the plasticising effect of the latex. The mix design depends upon thickness and intended use. However, typically mixes for a 12 mm topping or screed are as follows:

                           Screed            Topping
O.P.C                     1                      1
Moist sand           3.5                   1.75
3 mm Washed

Granite                  0                      1.75
SBR+                      0.2                   0.2 (ie. 10 L per 50 kg of cement)
Water                 As required    As required
All parts are by volume of uncompacted material.

CLEANING OF TOOLS

All tools should be cleaned immediately after use with water because hardened SikaBond® SBR+ modified toppings and screeds have excellent adhesion and are therefore difficult to remove. Solvents such as white spirit can be used with coarse wire wool to help remove partially hardened mortar.

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