FloorMuffler ComboFoam 2-in-1 Underlayment with Vapor Barrier – 100 sq. ft. (2mm)

FloorMuffler ComboFoam 2-in-1 Underlayment with Attached Vapor Barrier

Two jobs, one roll, one low price. FloorMuffler ComboFoam combines a 2mm cushioning foam with an attached vapor barrier film, so you get underlayment and moisture protection in a single pass — no separate poly sheeting, no extra step. It's the budget-smart foundation for floating laminate, engineered hardwood, and solid hardwood floors.

Vapor Barrier Built In

The attached film layer blocks moisture migrating up from the subfloor — the protection laminate and wood floors need over concrete slabs and in vapor-prone areas. Roll it out, tape the seams, and the moisture layer is done.

Real Sound Numbers at a Value Price

ComboFoam carries a 61 dB IIC and 54 dB STC rating — genuine, tested acoustic performance that takes the hollow clack out of floating floors. For bedrooms, living areas, rentals, and flips, that's the comfort upgrade tenants and buyers notice, at a price that works across a whole property.

Made for Volume Work

At 100 square feet per roll and 46.5 inches wide, ComboFoam covers rooms fast with fewer seams. It's lightweight, lies flat, cuts with a utility knife, and won't slow down a crew turning multiple units. For landlords, flippers, and production work, it's the spec that keeps material cost per door predictable.

From the FloorMuffler Family

ComboFoam is made by FloorMuffler, the underlayment brand pros know — backed by a 10-year residential warranty.

Where it works best:

• Floating laminate, engineered, and solid hardwood floors
• Concrete and plywood subfloors
• Rental turnovers, flips, and budget remodels
• Bedrooms, living rooms, and whole-home installs

Good to know: Not for use with radiant heat systems or flooring with a pre-attached pad. Need higher sound ratings for a condo or HOA, or radiant heat compatibility? Step up to FloorMuffler UltraSeal.