EXACOR™ Subflooring
EXACOR subfloor panels are fire-resistant[1], high-density, structural magnesium oxide cement panels. When used as a subfloor, EXACOR™ panels can replace plywood and/or OSB subflooring in certain assemblies and can remove the need for gypsum underlayment.
- EXACOR Subflooring Sales Sheet
- EXACOR Subflooring Installation Manual
- EXACOR Subflooring 3-Part Spec (Short Form) Section 06 16 23
- EXACOR Subflooring Code Recognition | ESR-4634
- BXUV L525 Fire-Rated Assembly using EXACOR Subflooring
- BXUV L601 Fire-Rated Assembly using EXACOR Subflooring
- BXUV L602 Fire-Rated Assembly using EXACOR Subflooring
- EXACOR Subflooring Contractor Checklist
- EXACOR Wall Sheathing and Subflooring Commercial Warranty
- EXACOR Safety Data Sheet
01 Products
Subflooring Panel, 3/4" × 4' × 8'
| Panels Per Unit | 22 |
| Fire Resistance | ASTM E119, ANSI/UL 263 |
| Fire-Resistant Assemblies (UL 263) |
L601, L602 |
Performance Category | Panel Size | Edge Profile | Fire-Resistant Assemblies (UL 263) | Approx. Weight Per Panel | Panels Per Unit |
|---|---|---|---|---|---|
| Nominal 3/4" Thickness (20 mm) | Nominal 4' × 8' (1220 mm × 2440 mm) | Tongue and Groove | L601, L602 | 144 lbs. | 22 |
02 What Is MgO
Magnesium oxide (MgO) offers simple strength and streamlined installation for a building panel with exceptional workability.
MgO panels are cementitious panels that are primarily made of inorganic materials reinforced with layers of glass fiber mesh. EXACOR™ MgO panels are manufactured to provide a streamlined solution for strength, fire resistance and sound performance.
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Speed & Ease of Installation
Installs with just a single trade and can eliminate the need for gypsum underlayment.
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Sound Absorption
Can help achieve sound ratings when used as a part of a STC/IIC-tested floor/ceiling assembly.
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Fire Resistance[1]
Provides fire resistance as part of fire-resistance-rated floor/ceiling assemblies.
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Dimensional Stability
Withstands exposure to moisture and does not warp, expand, cup or delaminate like other (wood) panels do.
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Inherent Strength
Contains a proprietary layered mesh reinforcement for added structural value.
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Quality Assurance
Manufactured under a quality control program with inspections by ICC-ES and Underwriters Laboratory (UL) to ensure consistent product performance.
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Optimize Material & Labor Costs
High-performing material that may save time and help reduce materials and trades needed to install.
03 How to Install
Installs like wood with no need for gypsum underlayment.
Unlike gypsum underlayment, EXACOR subfloor panels do not require a cure time that can slow or halt construction progress. That means installation in less time, with less material and from a single trade — no extra tools or skills needed. If they’ve been installing with wood as subflooring, they’re going to love EXACOR MgO panels.
04 Documents
Resource Library
05 Warranty
Enhanced Experience
If you’re building a multifamily or light commercial project, register your project and complete a preconstruction meeting to access the full range of technical support and warranty benefits for your build, including a transferrable warranty. Review full warranty details and access project registration at the link below.
Explore more products.
06 News & Articles
Behind the Build Blog
How TDK Construction Saves Time and Money with EXACOR™ MgO Panels: Getting in on the Ground Level
TDK Construction agrees using EXACOR MgO panels equated to real time savings in a recent luxury apartment community project.
Read MoreHow to Streamline Fire Resistance and Acoustics in Multifamily Buildings
Learn how EXACOR™ magnesium oxide panels can offer fire resistance and sound-rated alternatives to traditional floor assemblies using gypsum underlayment in multifamily buildings.
Read MoreTime to Get Started: EXACOR™ MgO Panels Are Available and Ready for Your Job
Where to find EXACOR™ MgO Panels
Read MoreEXACOR™ MgO Panels vs. Gypsum Underlayment in Multifamily Buildings
Explore the differences between EXACOR™ MgO panels and gypsum underlayment for multifamily buildings.
Read More