NXT® Level Flow is a premium fire-rated self-leveling underlayment engineered for fast, smooth, and durable floor preparation. This high-flow, cement-based floor leveler is designed for interior applications and allows floor covering installations in as little as 24 hours.
Pourable or pumpable for maximum versatility, NXT® Level Flow can be applied from 1/8" to 2" in a single lift while delivering exceptional coverage and effortless application. Its low-viscosity formula creates a smooth, flat surface over concrete, gypsum, plywood, and other structurally sound substrates.
UL-certified for up to 2-hour fire resistance, this advanced underlayment is an ideal alternative to traditional gypsum systems, offering superior durability, rapid curing, and direct adhesive compatibility.
Perfect for use beneath:
- Hardwood flooring
- Luxury vinyl & resilient flooring
- Ceramic tile & natural stone
- Cork flooring
- Carpet and more
Features & Benefits
- Fire-rated self-leveling underlayment with UL-certified performance
- High-flow formula provides excellent coverage and easy application
- Pumpable or pourable for small or large projects
- Walkable in just 3–4 hours
- Ready for floor coverings after 24 hours
- Applies from 1/8" to 2" in a single lift
- Compatible with concrete, gypsum, plywood, and more
- Suitable over concrete with RH up to 100% (ASTM F2170)
- Inorganic composition resists mold and mildew growth
- Creates smooth, flat, and reliable flooring surfaces
Whether you're working on commercial or residential flooring projects, NXT® Level Flow delivers the speed, durability, and fire-rated protection needed for professional-grade installations.
