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Subfloor Preparation

Products

ARDEX SD-P LT

Self-Drying, Trowelable, Low Tension Concrete Underlayment

  • Ideal for ramping, patching large areas and screeding
  • Ready for floor covering in as little as 90 minutes
  • No primer required over concrete
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Information ARDEX SD-P LT

ARDEX SD-P® LT Self-Drying, Trowelable Low Tension Concrete Underlayment is formulated with a special blend of Portland cement, other hydraulic cements and polymers. It is a self-drying, fast setting, trowelable patch for smoothing and repairing concrete floors, ramps and stairways, as well as non-porous substrates such as terrazzo, ceramic and quarry tile, prior to the installation of floor covering.

Key Features

  • A blend of Portland cement and other hydraulic cements
  • Provides a smooth surface over a variety of substrates
  • Ideal for ramping, patching large areas and screeding
  • Fluid consistency for ease of application
  • Install floor coverings in as little as 90 minutes
  • Install neat up to 1” (25.4 mm) and up to 3” (7.6 cm) with aggregate
  • Easy to mix with water only
  • No primer required over concrete
  • Exceptional bond strength
  • Interior use only
  • Compressive strength of 4,500 psi

Standards

SystemOne™

Technical Data ARDEX SD-P LT

Installation

Mixing Ratio: 3.75 quarts (3.5 L) of water per 40 lb. (18 kg) bag
For smaller batches, use 4 parts powder to 1 part water by volume
Coverage: 25 sq. ft. per 40 lb. (18 kg) bag at 1/4’’ (2.3 sq. m at 6 mm)
50 sq. ft. per 40 lb. (18 kg) bag at 1/8’’ (4.6 sq. m at 3 mm)
Dependent on surface profile, density and porosity.

Performance

Compressive Strength (ASTM C109/mod – Air cure only): 4,500 psi (315 kg/sq. cm.) at 28 days
Flexural Strength (ASTM C348): 1,000 psi (70 kg/sq. cm.) at 28 days
Drying Time and Installation of Flooring: Wood flooring and high-performance adhesives (epoxies or urethanes): 16 hours. All other cases: When hardened (Typically 90 minutes).
Packaging: 40 lb. (18 kg) bag
Storage: Store in a cool, dry area. Do not leave units exposed to sun. Protect unused material by removing air from bag and sealing tightly.
Shelf Life: 9 months, if unopened and properly stored
Warranty: ARDEX L.P. Standard Limited Warranty applies. Also eligible for ARDEX SystemOne™ Warranty When used as a system. For full warranty details: ardexamericas.com/services/warranties.

For complete product technical information, click on the Downloads tab and open the Technical Data download.

Calculator ARDEX SD-P LT

Contact Us

Questions? Please fill out the form below to contact us with any of your questions or concerns. We look forward to hearing from you, and we’ll be in touch shortly.

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Information ARDEX SD-P LT

ARDEX SD-P® LT Self-Drying, Trowelable Low Tension Concrete Underlayment is formulated with a special blend of Portland cement, other hydraulic cements and polymers. It is a self-drying, fast setting, trowelable patch for smoothing and repairing concrete floors, ramps and stairways, as well as non-porous substrates such as terrazzo, ceramic and quarry tile, prior to the installation of floor covering.

Key Features

  • A blend of Portland cement and other hydraulic cements
  • Provides a smooth surface over a variety of substrates
  • Ideal for ramping, patching large areas and screeding
  • Fluid consistency for ease of application
  • Install floor coverings in as little as 90 minutes
  • Install neat up to 1” (25.4 mm) and up to 3” (7.6 cm) with aggregate
  • Easy to mix with water only
  • No primer required over concrete
  • Exceptional bond strength
  • Interior use only
  • Compressive strength of 4,500 psi

Standards

SystemOne™

Technical Data ARDEX SD-P LT

Installation

Mixing Ratio: 3.75 quarts (3.5 L) of water per 40 lb. (18 kg) bag
For smaller batches, use 4 parts powder to 1 part water by volume
Coverage: 25 sq. ft. per 40 lb. (18 kg) bag at 1/4’’ (2.3 sq. m at 6 mm)
50 sq. ft. per 40 lb. (18 kg) bag at 1/8’’ (4.6 sq. m at 3 mm)
Dependent on surface profile, density and porosity.

Performance

Compressive Strength (ASTM C109/mod – Air cure only): 4,500 psi (315 kg/sq. cm.) at 28 days
Flexural Strength (ASTM C348): 1,000 psi (70 kg/sq. cm.) at 28 days
Drying Time and Installation of Flooring: Wood flooring and high-performance adhesives (epoxies or urethanes): 16 hours. All other cases: When hardened (Typically 90 minutes).
Packaging: 40 lb. (18 kg) bag
Storage: Store in a cool, dry area. Do not leave units exposed to sun. Protect unused material by removing air from bag and sealing tightly.
Shelf Life: 9 months, if unopened and properly stored
Warranty: ARDEX L.P. Standard Limited Warranty applies. Also eligible for ARDEX SystemOne™ Warranty When used as a system. For full warranty details: ardexamericas.com/services/warranties.

For complete product technical information, click on the Downloads tab and open the Technical Data download.

Calculator ARDEX SD-P LT

Contact Us

Questions? Please fill out the form below to contact us with any of your questions or concerns. We look forward to hearing from you, and we’ll be in touch shortly.

"*" indicates required fields

Name*
Address
This field is for validation purposes and should be left unchanged.