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Fewer trades on site. Quicker to install. EXACOR™ has the industry abandoning gypsum underlayment.

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01 EXACOR Product Applications

One Board. Zero Hassle.

Subflooring
Underlayment

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.

  • Sound Absorption

    Can help achieve sound ratings when used as a part of a STC/IIC-tested floor/ceiling assembly.

  • Fire Resistance[1]

    Provides fire resistance as part of fire-resistance-rated floor/ceiling assemblies.

  • Dimensional Stability

    Withstands exposure to moisture and does not warp, expand, cup or delaminate like other (wood) panels do.

  • Inherent Strength

    Contains a proprietary layered mesh reinforcement for added structural value.

  • Quality Assurance

    Manufactured under a quality control program with inspections by ICC-ES and Underwriters Laboratory (UL) to ensure consistent product performance.

  • Optimize Material & Labor Costs

    High-performing material that may save time and help reduce materials and trades needed to install.

03 Abandon Gypsum

Materials matter when you’re designing and building multifamily structures.

EXACOR™ MgO panels install in less time, with less steps, and with less mess — all while offering fire resistance[1] and sound control.

04 Documents

Resource Library

Get general and in-depth info about EXACOR, including installation manuals, data sheets and architectural specs for the applications of EXACOR™ underlayment, subflooring and wall sheathing.

  • EXACOR Fire & Sound Assemblies Handbook

    This document explains and illustrates different sound and fire assemblies using EXACOR underlayment, subflooring and wall sheathing.

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  • 3-Part Spec (Short Form) Section 06 16 26 | EXACOR Underlayment

    This 3-part specification uses CSI Masterformat™ for architectural specs in regard to the applications of EXACOR underlayment.

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  • 3-Part Spec (Short Form) Section 06 16 23 | EXACOR Subflooring

    This 3-part specification uses CSI Masterformat™ for architectural specs in regard to the applications of EXACOR subflooring.

    Download

  • 3-Part Spec (Short Form) Section 06 16 00 | EXACOR Wall Sheathing

    Correctly specify EXACOR exterior wall sheathing and its installation using this detailed guide.

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  • Code Recognition for EXACOR 1/2" (12mm) Underlayment | ESR-4750

    ESR-4750 provides information on the description, uses and code compliance of EXACOR 1/2" (12 mm) underlayment.

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  • Code Recognition for EXACOR Subflooring | ESR-4634

    ESR-4634 provides information on structural performance, durability and surface burning characteristics for EXACOR™ subflooring.

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  • EXACOR Wall Sheathing Structural Recognition ESR 4635

    Review the International Code Council Evaluation Service’s technical descriptions and key property evaluations of EXACOR™ MgO sheathing panels for use in approved assemblies.

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  • BXUV.L601 Fire-Rated Assembly using EXACOR Subflooring | UL Assembly

    This UL Assembly is designed specifically as a one-hour interior rating using EXACOR subflooring.

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  • BXUV.L602 Fire-Rated Assembly using EXACOR Subflooring | UL Assembly

    This UL Assembly is designed specifically as a one-hour interior rating using EXACOR subflooring.

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  • EXACOR Fire Resistance Assemblies ESL 1290

    Learn how EXACOR™ MgO sheathing panels meet the performance criteria in conformance with the International Code Council Evaluation Service’s evaluation.

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  • Sales Sheet | EXACOR Underlayment

    Learn how EXACOR underlayment is a sound choice to help keep projects on time with high-quality acoustical performance and speedy installation.

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  • Sales Sheet | EXACOR Subflooring

    Learn how to get structural and acoustical performance from a single trade with EXACOR subflooring.

    Download

  • Sales Sheet | EXACOR Wall Sheathing

    Learn how high-performing, time-saving MgO panels for wall sheathing can help reduce materials and trades needed to install.

    Download

  • Installation Manual | EXACOR Wall Sheathing

    Proper installation of MgO wall sheathing panels is simple using this general overview of its applications in approved assemblies.

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  • Safety Data Sheet | EXACOR | English

    The Safety Data Sheet (SDS) list all of the materials used within the EXACOR products.

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  • Contractor Checklist | EXACOR Underlayment

    This checklist outlines the important observations and practices to perform successfully when installing EXACOR underlayment.

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  • Fact Sheet | EXACOR Panels

    Get an overview of EXACOR’s benefits and applications and learn about its structural and functional performance.

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  • 10-Year Limited Warranty | EXACOR Products | 10-Year Limited

    This document explains the warranty for EXACOR products.

    Download

05 Education Options

Learning & Education

Interested in discovering more about magnesium oxide panels and the benefits EXACOR could bring to your multifamily jobsite? Explore learning opportunities below.

Home Building Crossroads Webinar – Acoustic Control in Multifamily Construction

Explore the intersection of performance variables and design implications.

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1 AIA CE – Magnesium Oxide (MgO) Floor & Wall Panels for Multifamily Buildings

Meet the chemical and molecular formula revolutionizing multifamily structure design-builds.

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1 AIA CE – Code-Recognized MgO Panel Applications for Acoustic and Fire-Rated Systems

Compare and contrast MgO panel sound- and fire-rated assemblies for multifamily projects.

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06 Warranty

Warranty Information

See our 10-Year Limited Warranty. Limitations and Restrictions may apply.

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