Ardex Liquid BackerBoard Self-Leveling Underlayment - 50 lb bag
Brand: Ardex
Availability: Sold In Store - Ships From Store (67 available in store). (More Info)
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Ardex Liquid BackerBoard Self-Leveling Underlayment — Smooth floors, Faster installs
Ardex Liquid BackerBoard is a self-leveling underlayment for interior wood and concrete subfloors, offering a faster and easier alternative to traditional backerboards. It eliminates the need for cutting, fitting, or metal lath mesh, even on wood subfloors, while creating a smooth, durable surface ready for tile and stone in as little as 6 hours.
Walkable in just 2–3 hours, it provides excellent coverage, installs up to 1 1/4" thick, and is ideal for use over concrete, terrazzo, ceramic tile, epoxy, and for encapsulating in-floor heating systems.
Key Features
- Replaces traditional backerboards for faster, easier installation
- No lath mesh or additives required – even over wood subfloors
- Walkable in 2–3 hours, install tile and stone in as little as 6 hours
- Installs up to 1 1/4" (32 mm) thick with excellent coverage
- Easy to mix and pour – just add water
- Ideal for encapsulating in-floor heating systems
- Portland cement-based for strength and durability
- Convenient prefill option over Ardex UI 740 Flexbone and other uncoupling membranes
Installation:
Mixing Ratio: 6 quarts (5.7 L) of water per 50 lb. (22.7 kg) Bag
Approximate Coverage:
- 32.5 sq. ft. per bag at 1/4" (3 sq. m at 6 mm)
- 65 sq. ft. per bag at 1/8" (6 sq. m at 3 mm)
- (Coverage will vary depending on the texture of the surface being smoothed)
Performance:
- Flow Time: 10 minutes
- Compressive Strength (ASTM C109/mod – Air cure only): 3,000 psi (210 kg/sq. cm) at 28 days
- ASTM C627 Rating (Robinson-Type Floor Tester): Classified as extra heavy
- Flexural Strength (ASTM C348): 700 psi (49 kg/sq. cm) at 28 days
- Walkable: 2 – 3 hours
- Install Flooring and Waterproofing: See Installation of Flooring and Waterproofing section in Technical Data
- VOC: 0
- Packaging: 50 lb. (22.7 kg) bag
- Storage: Store in a cool, dry area. Do not leave bags exposed to sun.
- Shelf Life: 1 year, if unopened
- Warranty: Ardex L.P. Standard Limited Warranty applies
Calculator Ardex Liquid BackerBoard
| SKU | AR LI.BACKER |
|---|---|
| UPC | 709850000979 |
| Weight (lbs.) | 50.0 |
| Non-Returnable | No |
| Manufacturer | Ardex |
| Manufacturer Part Number | 12438 |
