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For virtually any construction type, USG engineered gypsum cement underlayments deliver strengths you never thought possible. Ensure long-lasting performance on your project with USG’s versatile flooring portfolio.
Approximate Compressive Strength (psi) | Product | Building Type | |||||
Single-Family | Multi-Family | Light-Commercial | Commercial/ Retail/ Office | Hotel/ Motel | Institutional | ||
7,000-10,000+ | USG Durock™ Quik-Top™ Self-Leveling Underlayment | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() |
7,000-10,000+ | USG Durock™ Quik-Top™ FR Self-Leveling Underlayment | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() |
5,000-6,000 | USG Durock™ Proflow™ Self-Leveling Underlayment | ![]() | ![]() | ![]() | ![]() | ||
4,000-5,000 | USG Durock™ Surface™ Pro Self-Leveling Underlayment | ![]() | ![]() | ![]() | ![]() | ||
3,500-4,500 | USG Durock™ Multi-Use Self-Leveling Underlayment | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() |
4,000-5,000 | USG Levelrock® 4500 Series Floor Underlayment | ![]() | ![]() | ![]() | ![]() | ||
3,500-5,000 | USG Levelrock® UltraArmor™ Series Floor Underlayment | ![]() | ![]() | ![]() | ![]() | ![]() | |
3,500-5,000 | USG Levelrock® CSD® Early Exposure™ Series Floor Underlayment | ||||||
3,500-4,500 | USG Levelrock® Commercial RH Floor Underlayment | ![]() | ![]() | ||||
3,000-4,100 | USG Levelrock® 3500 Series Floor Underlayment | ![]() | ![]() | ![]() | ![]() | ||
2,000-3,000 | USG Levelrock® 2500 Series Floor Underlayment | ![]() | ![]() | ![]() | |||
2,000-3,200 | USG Levelrock® RH Series Floor Underlayment | ![]() | ![]() |
Approximate Compressive Strength (psi) | Product | Subfloor Type | |||||||
Plywood and OSB | Structural Panels | Heavy Wood Plank | Corrugated Steel Deck | Concrete | Concrete Plank | Concrete Repair/ Leveling | Radiant Heat | ||
7,000-10,000+ | USG Durock™ Quik-Top™ Self-Leveling Underlayment | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ||
7,000-10,000+ | USG Durock™ Quik-Top™ FR Self-Leveling Underlayment | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ||
5,000-6,000 | USG Durock™ Proflow™ Self-Leveling Underlayment | ![]() | ![]() | ![]() | |||||
4,000-5,000 | USG Durock™ Surface™ Pro Self-Leveling Underlayment | ![]() | ![]() | ![]() | ![]() | ||||
3,500-4,500 | USG Durock™ Multi-Use Self-Leveling Underlayment | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() | |
4,000-5,000 | USG Levelrock® 4500 Series Floor Underlayment | ![]() | ![]() | ![]() | ![]() | ||||
3,500-5,000 | USG Levelrock® UltraArmor™ Series Floor Underlayment | ![]() | ![]() | ![]() | ![]() | ![]() | |||
3,500-5,000 | USG Levelrock® CSD® Early Exposure™ Series Floor Underlayment | ![]() | |||||||
3,500-4,500 | USG Levelrock® Commercial RH Floor Underlayment | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ||
3,000-4,100 | USG Levelrock® 3500 Series Floor Underlayment | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ||
2,000-3,000 | USG Levelrock® 2500 Series Floor Underlayment | ![]() | ![]() | ||||||
2,000-3,200 | USG Levelrock® RH Series Floor Underlayment | ![]() | ![]() | ![]() |