How to Use FloorLyft Ultra: A Step-by-Step Guide to Installing Flooring Underlayment

If you’re preparing to install new flooring, especially over an uneven subfloor from different floor height especially found in room-to-room transitions FloorLyft Ultra is one of the smartest upgrades you can make. Available at Lowe’s, FloorLyft Ultra is a premium flooring underlayment designed to smooth subfloor imperfections, reduce noise, and provide a moisture-resistant foundation for floating floors like luxury vinyl plank (LVP), laminate, and engineered hardwood.

In this article, we’ll break down how to use FloorLyft Ultra step by step so you can get the most out of your flooring installation project.

What is FloorLyft Ultra?

FloorLyft Ultra is a rigid fiberboard panel underlayment measuring 2 ft x 3 ft with a thickness of 6 mm. Each board adds a layer of cushioning and moisture resistance. It’s an ideal choice for:

• Corrects uneven subfloor heights and room to room transitions
• Minimizing impact sound and footfall noise
• Providing thermal insulation
• Creating a comfortable, stable surface for floating floors

Each 90 sq ft package contains panels that are easy to transport, cut, and install perfect for DIYers and professionals alike.

Tools and Materials You’ll Need

Before you begin, gather the following tools:

• Utility knife
• Tape measure
• Straight edge or T-square
• FloorLyft Ultra panels
• Moisture barrier tape (if needed)
• Floating floor material (LVP, laminate, etc.)

Step 1: Prepare Your Subfloor

Make sure the subfloor is clean, dry, and structurally sound. Sweep or vacuum any debris. While FloorLyft Ultra helps correct minor imperfections, it’s still important to remove any protruding nails, screws, or raised areas that could damage your floor.

Pro Tip: If your subfloor has significant moisture issues, install a vapor barrier beneath the FloorLyft Ultra panels.

Step 2: Plan Your Layout

Start in a corner of the room and plan your layout so that the panels run perpendicular to your finished flooring direction. This helps create better stability.

Dry-fit a few panels first to visualize the layout and minimize waste from cuts.

Step 3: Install the FloorLyft Ultra Panels

Lay the panels shiny side up. Butt the edges snugly together without overlapping. Stagger the joints between rows (similar to how you would install bricks) to prevent weak spots and promote a seamless surface.

If you need to trim panels to fit around corners or obstacles, use a utility knife.

Step 4: Tape the Seams (Optional)

For added moisture protection or to keep panels from shifting during flooring installation, you can tape the seams with underlayment or vapor barrier tape.

Step 5: Install Your Flooring

Once your underlayment is in place, proceed with installing your floating floor according to the manufacturer’s instructions. The rigid support of FloorLyft Ultra will make laying your LVP or laminate smoother and more efficient.

Why FloorLyft Ultra Makes a Difference

• Corrects uneven subfloors (up to minor variances)
• Improves acoustic performance
• Adds thermal comfort underfoot
• Moisture resistant felt layer
• Easy to install for DIY projects

Final Thoughts

Whether you’re upgrading a single room or doing a full-home flooring replacement, FloorLyft Ultra provides a professional-quality base that enhances both comfort and durability. With just a few tools and some basic planning, you can install this underlayment in an afternoon and enjoy a quieter, more level home for years to come.

Ready to get started? You can purchase FloorLyft Ultra directly from Lowe’s.