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ARDEX Products




Mortar With Corrosion Inhibitor
Product Quantity 55 lbs
Colours Grey
Working Time 15-20 Minutes
Pot Life 15-30 Minutes
Dry Time 3-7 Days FC, Seal
SF Or LF 20 SF
Area Or Depth 1/4" Thick
Floor Or Wall Overheads & Walls
Interior or Exterior Interior & Exterior
Compressive Strength (PSI) Day1 3000 | Day7 5000 | Day28 6300
Tensile Strength Day7 485 | Day28 565
TF Tack Free
RC Recoat
CG Concrete Guard
CD Concrete Dressing
FT Foot Traffic
LT Light Traffic
DT Dry Through
FC Full Cure
HFT Heavy Foot Traffic (Forklift)
VT Vehicular Traffic
FUT Full Traffic
  • ARDEX B 20 is a trowel-grade, Portland cement-based, polymer modified, structural repair mortar for vertical and overhead concrete. It is used at depths ranging from 1/4” to 2” (6 mm to 5 cm) in a single lift, and can be installed in multiple lifts up to 8” (20 cm) for deeper repairs of deteriorated exterior or interior concrete. ARDEX B 20 has a corrosion inhibitor built-in to protect reinforcing steel, is easy to apply and readily bonds to concrete. The resulting patch has low shrinkage and resists delamination, producing a surface suitable for commercial, institutional and multi-unit residential applications, including parking garages, overhead walkway and columns - virtually any vertical or overhead concrete surface that needs to be repaired

  • Portland cement-based, polymer modified structural repair mortar with integral corrosion inhibitor

  • Glass microspheres add body, reduce weight

  • Mixes with water only

  • Easy to apply - non-sag and can be sculpted

  • Installs from 1/4” to 2” in one lift, up to a total of 8” in multiple lifts for deeper applications

  • Freeze-thaw resistant

  • Suitable for overhead and vertical repairs on commercial,institutional and multi-unit residential applications

  • Recommended Tools: A 1/2” to 3/4” (12 to 19 mm) low speed heavy-duty mixing drill, heavy gauge square box (butterfly) mixing paddle, mixing buckets, measuring container, margin trowel, wood or magnesium float and a steel trowel. Also suitable for mixing in forced action mortar mixers

  • ARDEX B 20 is easily applied to any prepared concrete surface using standard concrete practices. Once mixed, the pot life and working time are 15 to 30 minutes, depending on surface and ambient temperatures. All mixed material must be placed within this time. Once placed, allow the material to take an initial set before finishing. Cool ambient and surface temperatures will slow the setting time, while high temperatures will accelerate it. Work a scrub coat of the mixed material into the primed or SSD concrete substrate, applying enough pressure to ensure good mortar-to-concrete contact. Apply the repair mortar while the scrub coat is still wet. If the scrub coat is allowed to dry, it must be mechanically removed and reapplied before applying the mortar. Once the mortar is applied, consolidate to remove any air pockets. Steel trowel the mortar to the desired finish once it takes its initial set

  • ARDEX B 20 can be installed from a minimum of 1/4” up to 2” (6 mm to 5 cm). For application depths greater than 2” (5 cm), mechanically roughen the first lift, and then allow it to set until hardened enough to accept the next lift (approx. 30 minutes). Repeat in 2” (5 cm) lifts until the full depth is filled, to a maximum of 8” (20 cm). Trowel the final lift to the desired finish

  • Do not install below 50°F (10°C) surface and air temperatures. These temperatures must also be maintained during and for 48 hours after the installation of ARDEX B 20