In multi-family housing construction, floor performance plays a critical role in long-term value, tenant comfort, and code compliance. The right underlayment doesn’t just support finished flooring; it improves acoustics, fire resistance, and structural integrity.

At Elastizell of Wisconsin, we specialize in gypsum concrete underlayment systems that are engineered for multi-family housing, senior living facilities, student housing, and other commercial residential buildings across Wisconsin and the Midwest. Below, we explore the core benefits of gypsum underlayment and why it’s the smart choice for developers, general contractors, and architects alike.

1. Superior Sound Control for Multi-Unit Buildings

Noise complaints are one of the leading causes of tenant dissatisfaction in apartments and condos. Gypsum concrete underlayment with sound mats helps meet or exceed STC (Sound Transmission Class) and IIC (Impact Insulation Class) ratings required by building codes.

Benefits:

  • Reduces both airborne and impact noise
  • Enhances tenant privacy and comfort
  • Helps buildings pass acoustic inspections with fewer delays

Looking to improve sound isolation in your project? Our acoustical floors division installs complete sound-rated floor systems tailored for high-density living.

2. Fire Resistance and Building Code Compliance

In multi-family housing, fire safety is non-negotiable. Gypsum underlayment is a non-combustible, Class A-rated material, making it ideal for fire-rated floor/ceiling assemblies.

Why it matters:

  • Supports UL-rated fire assemblies
  • Delivers passive fire protection between units
  • Simplifies code compliance and inspection approvals

For commercial projects with occupancy demands, this peace of mind is essential.

3. Leveling Uneven Subfloors with Ease

Multi-family buildings often involve wood-frame or concrete substrates that are uneven due to structural movement or construction variation. Gypsum concrete underlayment self-levels, creating a smooth, monolithic surface that supports finished flooring like LVT, carpet, or tile.

Features:

  • Corrects dips and waves in the subfloor
  • Allows for thinner, more consistent flooring installations
  • Reduces callbacks due to floor failures or finish issues

Learn more about our floor leveling systems.

4. Compatibility with Radiant Heat Flooring

More developers are integrating radiant heat systems to increase comfort and energy efficiency. Gypsum underlayment can be poured directly over radiant tubing without compromising performance.

Benefits include:

  • Excellent thermal conductivity
  • Even heat distribution across the slab
  • Improved comfort in high-end apartment units or senior living facilities

This makes gypsum underlayment a versatile choice for design flexibility.

5. Fast Installation at Scale

Speed matters in commercial construction. Gypsum underlayment can be poured quickly across thousands of square feet, keeping your project moving forward without extensive delays between trades.

Why it’s preferred:

  • Quick dry times allow for faster flooring installation
  • Eliminates the need for multi-stage prep
  • Reduces labor and equipment needs on-site

At Elastizell, we’re equipped to install high-volume gypsum systems for buildings of any size.

6. Cost-Effective Over the Project Lifecycle

Although some materials may seem less expensive initially, gypsum underlayment provides long-term cost savings due to its durability, fire resistance, and reduced callbacks.

Lifecycle advantages:

  • Fewer repairs or leveling issues
  • Lower maintenance costs for property managers
  • Better performance across tenant turnovers

When you factor in sound control, fire protection, and speed, gypsum is a value-engineered solution for multi-family builds.

Build It Right with Gypsum Concrete Underlayment

If you’re developing or managing a multi-family housing project, gypsum concrete underlayment is a proven way to enhance safety, comfort, and construction efficiency. From floor leveling to sound control, Elastizell of Wisconsin delivers expert installation backed by decades of experience.

Serving Wisconsin and the Midwest since 1963, we understand the technical and logistical demands of large-scale commercial residential construction.

Contact Elastizell of Wisconsin to discuss how gypsum underlayment can improve your next project.