Levelrock Brand Floor Underlayment 4500
Premium poured Gypsum flooring underlayment products

• Fast application, fast setting allows for return of light trade traffic within hours.

• Industry's most economical, highest compressive strength in class.

• Ideal for wood frame and multi-family construction.

• UL designs available up to 2-hour fire rating.

• Smooth crack-resistant surface.

• Helps maximize sound isolation between floors/units.

• Applied by USG licensed applicators.

System Description:
Levelrock Brand Floor Underlayment 4500 is a premium gypsum cement designed by USG for use in commercial, institutional, and rehab construction. It provides a smooth, hard underlayment surface over concrete slabs, pre-stressed concrete or concrete planks at thicknesses from fetheredge (with proper sand) to 3 inches. It is suitable for a variety of floor coverings. Levelrock Brand Floor Underlayment 4500 exceeds commercial vinyl floor covering requirements as a high-performing underlayment with compressive strengths up to 5500 psi. Quick set times and high production rates allow for traffic within hours of installation. Exceptional surface hardness of Levelrock Brand Floor Underlayment 4500 resists indentation.

Product Description:
USG poured gypsum underlayment products are mixed with sand and water to yield a lightweight, leveling slurry. A 3/4-in thick gypsum underlayment weighs approximately 7.8 pounds per square foot and has a density of only 125 pounds per cubic foot.

System Benefits:
USG Poured gypsum floor underlayment systems provide an economical way to achieve lightweight, fire-resistant, sound-rated, self-leveling floors in residential and light commercial construction. Typical applications are less labor intensive than many other types of construction and provide high fire ratings characteristic of gypsum systems. Higher compressive strengths minimize floor damage from trades. Designed sound systems provide for improved STC and IIC ratings when used with acoustical mat.