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Subfloor Preparation

Products

HENRY® 740 RapidPro™

Rapid, High Flow Self-Leveling Underlayment

  • Rapid dry technology – Install most flooring in as little as 2 hours
  • Use to level and smooth interior concrete, terrazzo, ceramic and quarry tile, epoxy coating systems and non-water-soluble adhesive residue on concrete
  • Levels from 1/8” (3 mm) up to 1” (24 mm) thick
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Information HENRY® 740 RapidPro™

Suitable Substrates

  • Concrete (structurally sound)
  • Absorbent terrazzo on concrete†
  • Other approved, non-porous materials on concrete†:
    • Epoxy terrazzo; non-porous (non-absorbent) cementitious terrazzo
    • Ceramic, quarry or porcelain tiles
    • Epoxy coatings
    • Concrete treated with certain curing compounds (test areas only; for full instructions, see com/properprep)

†Must be sound, solid and well-bonded to underlying, structurally sound substrates.

Suitable Applications

  • All grade levels
  • Dry areas only
  • Interior applications only

Key Features

  • Use to level and smooth interior concrete, terrazzo, ceramic and quarry tile, epoxy coating systems and non-water-soluble adhesive residue on concrete
  • Rapid dry technology – Install most flooring in as little as 2 hours
  • Levels from 1/8” (3 mm) up to 1” (24 mm) thick
  • Interior use only

Technical Data HENRY® 740 RapidPro™

Application Data

Water ratio: 5 quarts (4.7 L) of clean water per bag
Flow Time: 10 minutes (70°F / 21°C)

Installation

Coverage: Per bag at 1/8” (3 mm): 45 sq. ft. (4.2 sq. m)
Coverage varies with texture of substrate surface.
Max. Thickness: Over substrates primed with HENRY 739: 1/2” (12 mm);  All other applications: 1” (24 mm)
Compressive Strength (ASTM C109/mod – Air cure only): 8,000 psi (562 kg/cm2) at 28 days
Flexural Strength (ASTM C348): 2,000 psi (140.6 kg/cm2) at 28 days
Drying Time: See the “Drying Time and Installation of Flooring” in Technical Data Sheet.
VOC: 0
Packaging: 40 lbs (18.1 kg) bag
Storage: Store in a cool, dry area. Do not leave units exposed to sun.
Shelf Life: 9 months, if unopened and properly stored
Warranty: HENRY Standard Limited Warranty applies.

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

Information HENRY® 740 RapidPro™

Suitable Substrates

  • Concrete (structurally sound)
  • Absorbent terrazzo on concrete†
  • Other approved, non-porous materials on concrete†:
    • Epoxy terrazzo; non-porous (non-absorbent) cementitious terrazzo
    • Ceramic, quarry or porcelain tiles
    • Epoxy coatings
    • Concrete treated with certain curing compounds (test areas only; for full instructions, see com/properprep)

†Must be sound, solid and well-bonded to underlying, structurally sound substrates.

Suitable Applications

  • All grade levels
  • Dry areas only
  • Interior applications only

Key Features

  • Use to level and smooth interior concrete, terrazzo, ceramic and quarry tile, epoxy coating systems and non-water-soluble adhesive residue on concrete
  • Rapid dry technology – Install most flooring in as little as 2 hours
  • Levels from 1/8” (3 mm) up to 1” (24 mm) thick
  • Interior use only

Technical Data HENRY® 740 RapidPro™

Application Data

Water ratio: 5 quarts (4.7 L) of clean water per bag
Flow Time: 10 minutes (70°F / 21°C)

Installation

Coverage: Per bag at 1/8” (3 mm): 45 sq. ft. (4.2 sq. m)
Coverage varies with texture of substrate surface.
Max. Thickness: Over substrates primed with HENRY 739: 1/2” (12 mm);  All other applications: 1” (24 mm)
Compressive Strength (ASTM C109/mod – Air cure only): 8,000 psi (562 kg/cm2) at 28 days
Flexural Strength (ASTM C348): 2,000 psi (140.6 kg/cm2) at 28 days
Drying Time: See the “Drying Time and Installation of Flooring” in Technical Data Sheet.
VOC: 0
Packaging: 40 lbs (18.1 kg) bag
Storage: Store in a cool, dry area. Do not leave units exposed to sun.
Shelf Life: 9 months, if unopened and properly stored
Warranty: HENRY Standard Limited Warranty applies.

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