Flooring & installation supplies for contractors, builders & every projectVirginia · Washington, D.C. · Maryland · 703-929-8455
Jobsite Flooring
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ARDEX K 520 self-leveling concrete topping, 50 lb bag

Product specifications

Download Jobsite Flooring spec sheet (PDF)
Brand
ARDEX
Product type
Self-leveling underlayment
Coverage
25 sq. ft. per 50 lb bag at 1/4 in.; 12.5 sq. ft. at 1/2 in.
Thickness
Up to 1 in. neat; up to 3 in. with aggregate
Mixing ratio
5 qt water per 50 lb bag
Flow time
10 minutes
Time to foot traffic
2–3 hours
Time to seal or polish
As little as 24 hours
Compressive strength
6,000 psi at 28 days
Standards
ASTM C1708
Packaging
50 lb bag
VOC
0
ARDEX K 520 Self-Leveler · JF-11138

ARDEX K 520 Self-Leveler

Floor prep & leveling

ARDEX K 520 is a Portland cement-based, self-leveling topping that can be left as the finished wear surface on interior concrete floors once sealed or polished. It levels up to 1 in. neat, is walkable in 2 to 3 hours, and can be sealed or polished in as little as 24 hours.

What it’s used for

  • Polished or sealed concrete wear surfaces
  • Fast-track resurfacing of interior concrete
  • Over approved non-porous substrates
  • Underlayment for floor coverings
  • Interior floors only
REGULAR PRICE$66.59 / bag

Contractors and builders get trade pricing with an account. See trade accounts

Sold individually, priced per bag.
Minimum order: 1.

Availability: Confirm before ordering

1 bag$66.59

Estimated lead time: 1–2 weeks. Delivery to Virginia, Washington, D.C., and Maryland. We’ll reach out with a quote that includes shipping after you request an order.

Delivery, cancellations & damage policy