Urethane Wood Flooring Adhesive – FPI UA-25 5-Gallon

FPI™ UA-25 is a professional-grade, all-in-one urethane wood flooring adhesive that combines bonding, moisture protection, and sound control in a single trowel-applied system. Designed for glue-down hardwood installations, UA-25 eliminates the need for separate moisture membranes and sound mats while providing a permanent, high-performance bond  .

UA-25 is backed by a Limited Lifetime Warranty and is formulated for professional installers who require maximum reliability and moisture protection.

All-In-One System

UA-25 functions as:

• Wood flooring adhesive
• Unlimited moisture protection
• Sound control membrane

No moisture testing is required when the correct moisture-control trowel is used, making UA-25 one of the fastest and most installer-friendly adhesive systems available  .

Approved for All Major Wood Flooring Types

UA-25 is approved for glue-down installation of:

• Solid plank hardwood
• Multi-ply engineered wood
• Bamboo
• Parquet

When installed below grade, UA-25 is approved for engineered plank flooring  .

Moisture & Sound Performance

UA-25 delivers unlimited moisture protection when applied with the proper trowel, protecting wood floors from slab vapor transmission.

It also provides acoustic insulation with ratings up to:

• 63 IIC
• 62 STC
• 21 dB Delta IIC 

This makes UA-25 ideal for condominiums, apartments, and commercial spaces requiring sound control.

Coverage

Adhesive + Moisture Protection

• Up to 5/8″ wood: 30–35 sq ft per gallon
• Over 5/8″ & below-grade engineered: 20 sq ft per gallon

Adhesive Only

• Up to 1/2″ wood: 50 sq ft per gallon
• Up to 3/4″ wood: 30 sq ft per gallon 

Technical Properties

• Urethane-based
• Ultra-low VOC (<30 g/L)
• Open time: 1 hour 30 minutes
• Tack time: 60 minutes
• Freeze/thaw stable
• Flash point: >250°F
• Shelf life: 12 months (unopened) 

Packaging

• 5-gallon metal pails 

Why Installers Choose UA-25

FPI UA-25 removes the need for:

• Separate moisture barriers
• Sound underlayments
• Primers

With adhesion, moisture control, and sound suppression built into one application, UA-25 saves labor, reduces failure risk, and delivers long-term flooring performance.