Fanfold Underlayment for Laminate & Engineered Flooring

Fanfold underlayment is a practical, job-site-friendly solution designed to smooth minor subfloor imperfections and create a more comfortable surface for floating floors. Lightweight, easy to handle, and quick to install, it’s a go-to choice for laminate and engineered wood installations over wood or concrete subfloors.

A Simple Way to Prepare Your Subfloor

This underlayment is used as a base layer beneath floating laminate or engineered flooring. The fanfold design unfolds into large panels, helping you cover rooms efficiently while minimizing seams. It helps even out small subfloor variations, reduces friction between the floor and subfloor, and supports a more consistent finished look.

Reliable Everyday Performance

Fanfold underlayment provides dependable cushioning and support for residential flooring projects. It helps reduce minor floor noise caused by foot traffic and adds a thin layer of insulation underfoot. While not a full moisture barrier, it offers light protection when installed over dry, properly prepared subfloors.

Easy, Installer-Friendly Application

Designed with efficiency in mind, fanfold underlayment installs quickly with minimal tools. The panels lay flat, cut easily with a utility knife, and tape together at the seams. Its lightweight construction makes it especially convenient for DIYers and professionals working in occupied homes or tight spaces.

Where This Product Works Best

• Floating laminate flooring
• Engineered wood flooring (floating installations)
• Residential living areas and bedrooms
• Installations over plywood, OSB, or concrete subfloors
• Projects needing fast coverage with minimal waste

Quick Specs Summary

• Format: Fanfold sheets
• Thickness: Approximately 2 mm
• Material: Foam underlayment
• Installation method: Loose-laid, taped seams
• Compatible flooring: Laminate and floating engineered wood
• Typical use: Residential interiors

Why This Is a Good Choice

If you’re looking for an affordable, easy-to-install underlayment that gets the job done without added complexity, fanfold underlayment is a solid option. It helps create a smoother installation surface, speeds up prep time, and pairs well with most floating floor systems, making it ideal for straightforward residential projects.