Ultimate Self Leveling Underlayment


Ultimate Self Leveling Underlayment is a cement-based, pourable, pumpable and free flowing underlayment. It is designed for smoothing and leveling most subfloors and is particularly well-suited for large areas. The resulting smooth finish is ideal for the installation of all types of floor covering, including ceramic or natural stone tile, carpet, resilient, laminate flooring and wood flooring. For interior dry area use only. All surfaces must be primed with TEC Skill Set Multipurpose Primer before application of Ultimate Self Leveling Underlayment.


  • Single coat application
  • For featheredge up to 11⁄2 in. (38 mm) depth, up to 5 in. (12 cm) with proper aggregate
  • Can be applied directly over green concrete [15 lb. per 1000 ft2 (0.07 kg/m2) per 24 hours, RH 95% or lower]
  • Fast setting—dries to walkable surface in 2 to 4 hours, with ceramic and stone tile installation in 6 hours and all other floor coverings in 12-16 hours
  • Contributes to LEED® project points
  • High compressive strengths
  • Pour or pump application
  • Superior mixing and flowing characteristics
  • Self-drying formula
  • Available in 50 lbs. bag


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TEC© Skill Set™ Ultimate Self Leveling Underlayment product info



50 lbs. (22.68 kg) plastic bag Product #33-0387-3121

Coverage shown is approximate. Actual coverage may vary according to substrate conditions and thickness of applications.

Unit Size 1/8" (3 mm) 1/4" (6 mm) 1/2" (12 mm) 1" (25 mm)
50 lb.
(22.68 kg)
48-54 sq.ft.
(4.4-5 m2)
24-28 sq.ft.
(2.2-2.6 m2)
12-14 sq.ft.
(1.1-1.3 m2)
6-7 sq. ft.
(0.55 – 0.65 m2)

Suitable Substrates
When properly prepared, suitable substrates include:
• Concrete
• Ceramic, porcelain, or quarry tile
• Pavers
• Cement or epoxy terrazzo
• Cement backerboard
• VCT or full glued down, non-cushioned vinyl sheet goods
• Exterior grade plywood
• Oriented Strand Board (OSB)
• Gypsum substrates–minimum tensile bond strength 72 psi (0.5 MPa)

Store in cool, dry area away from direct sunlight. Do not store open

Shelf Life
Maximum of 1 year from date of manufacture in properly stored,
unopened package.


Description  Test Standard Test Results
28 Day Compressive Strength  ASTM C-109 5000 psi (34.2 MPa)
28 Day Flexural Strength  ASTM C-580  1100 psi (7.5 MPa)
Bond Strength (Concrete)  ASTM D-3931 350-400 psi (2.4-2.7 MPa)
28 Day Shrinkage ASTM C-531 (Modified) 0.025-0.045%



Technical Service
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8:00am–5:00pm CST:

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TEC© Skill Set™ Ultimate Self Leveling Underlayment SDS

Ultimate Self Leveling Underlayment SDS-English

TEC© Skill Set™ Ultimate Self Leveling Underlayment product info

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