Polymer latex admixture — adhesion and watertightness
A polymer latex admixture added to the mixing water to raise adhesion, flexibility and watertightness in cement-based mortars, screeds and repairs. Cement mortar is brittle by nature and bonds poorly to non-absorbent surfaces. The polymer admixture forms a continuous polymer film network within the hardening mortar matrix; this network bridges the voids between the cement crystals, making the mortar both more flexible and more adhesive. It is not used on its own — it is neither a waterproofing nor a repair material.
Get a tailored price quote based on your project details
Polymer latex admixture
Styrene-butadiene (SBR) based emulsion
White emulsion
1.00 – 1.05 g/cm³
40% – 50%
8 – 10
5% – 20% of the cement weight
Into the mixing water, before the powder
+5 °C / +30 °C
12 months
5 kg
Values are typical figures obtained at +23 °C / 50% relative humidity.
5% — basic adhesion gain; standard surface repair and thick sections. 10% — flexibility and watertightness; surfaces beneath waterproofing. 20% — maximum bond; old or smooth concrete, ceilings and thin sections.
First determine the total mixing water the mortar requires. Then subtract the calculated L101 dose from that amount — the total liquid must stay constant. Add L101 to the water first, stir until homogeneous, then add the powder. Adding the admixture straight to the dry powder prevents the polymer from dispersing evenly.
No. The admixture is subtracted from the water, not added on top of it. Otherwise the water/cement ratio is upset and strength drops.
No. Above 20% the setting time lengthens, strength development is delayed and cost rises for no benefit.
No. Latex emulsions separate into phases after freezing and lose their function. Store above +5 °C.
Contact us for detailed information, consumption figures and a price quote for L101 iLatex.
