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e DEXcell® brand Technical Guide

e DEXcell® brand Technical Guide
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e DEXcell® brand Technical Guide

Product catalog summary
Introduction
National Gypsum's DEXcell® brand offers a range of high-quality roof boards for commercial roofing applications, emphasizing technical support and sustainability.
Product Overview
The DEXcell® family includes Glass Mat Roof Board, FA Glass Mat Roof Board, and Cement Roof Board, each designed for specific applications such as thermal and fire barriers and moisture resistance.
DEXcell® Glass Mat Roof Board
Features coated fiberglass facers and a mold-resistant gypsum core, suitable for various roofing systems. It offers enhanced fire safety and acoustical properties.
DEXcell® FA Glass Mat Roof Board
Designed for fully adhered systems, it provides increased moisture and mold resistance, eliminating the need for field-applied primer.
DEXcell® Cement Roof Board
Offers superior moisture resistance, suitable for high-temperature environments, and complies with ASTM standards.
Technical Information
Products meet ASTM standards and offer fire-resistance characteristics, available in various sizes and thicknesses.
Applicable Standards and References
References ASTM standards for testing gypsum panel properties, including mold resistance and surface burning characteristics.
Physical Properties
Details on thickness, flexural strength, water absorption, and mold resistance for DEXcell® FA Glass Mat Roof Board.
Product Comparison
Compares DEXcell® FA Glass Mat and Cement Roof Boards in terms of thickness, pallet size, and weight.
Fire-Resistance Ratings
Discusses compliance with UL Class A and FM Class 1 fire ratings, emphasizing proper assembly procedures.
Wind Uplift
Evaluated for wind-uplift performance with installation guidelines provided.
Design and Application Recommendations
Includes guidelines for adhesives, primers, and installation methods, stressing adherence to manufacturer recommendations.
Specifications and Procedures
Outlines installation methods, substrate preparation, and fire-rated assembly requirements.
Limitations and Installation Recommendations
Advises on avoiding excessive loads and moisture, and proper handling and storage of products.
Safety
Recommends protective clothing and eye protection, and consulting the SDS for safety information.
System Applications and Acoustics
Provides examples of roof system applications and acoustic performance ratings.
Warranty Information
Includes a limited warranty covering defects and exposure, with conditions for validity and claims process.
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Catalog excerpts

e DEXcell® brand Technical Guide-1

DEXcell® brand 7Tfr DEXcell® FA Glass Mat Roof Boards DEXcell® Glass Mat Roof Boards DEXcell® Cement Roof Boards

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e DEXcell® brand Technical Guide-2

Helping You Build Better With High-Quality Products And Resources Founded in 1925, National Gypsum is one of the world’s largest producers of quality building products. For nearly a century, customers like you have looked to us for the best products, service and technical support. With a focus on sustainability, we strive to bring you the finest in construction products, education and resources to meet and exceed your expectations. With Technical Support You Can Count On Great products are nothing without great customer service. For detailed technical information about product applications, installation...

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e DEXcell® brand Technical Guide-3

Look Closer At The Best Roof Board Products Meet Our DEXcell® Family . . 4 DEXcell® Glass Mat Roof Board . . . . . . . . . . . . . . 6 DEXcell® FA Glass Mat Roof Board . . . . . . . . . . . . . . 9 DEXcell® Cement Roof Board . . . . . . . . . . . . . 12 Technical Information . . . . 15 Fastener Patterns . . . . . . . . 17 System Applications . . . . . . 20 Acoustics . . . . . . . . . . . . . . . . 22 Warranty . . . . . . . Back Cover With Design That Considers The Environment Together, we can attain the highest level of ecological responsibility and resource-efficient technology. National Gypsum...

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e DEXcell® brand Technical Guide-4

For Every Application Need roof board options and technical expertise? We've got you covered. Three Outstanding Products The National Gypsum line of DEXcell® brand Roof Board covers the entire spectrum of commercial roofing applications. When a building houses expensive equipment or expensive people, DEXcell® Roof Boards will cover more than your roof. ■ First, our DEXcell® brand Glass Mat Roof Board is recommended for mechanically attached systems, metal roof systems and wood shake underlayment. It's also an excellent thermal and fire barrier. ■ Next, our DEXcell® brand FA Glass Mat Roof Board...

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e DEXcell® brand Technical Guide-5

DEXcell® Glass Mat DEXcell® FA Glass Mat DEXcell® CementApplication Roof Board Roof Board Roof Board © Recommended Acceptable Not Recommended* ‘indicates product applications that may be used successfully, but may not be optimal in terms of cost or performance as compared to the recommended product. Note: In situations where prolonged excessive membrane surface temperatures may be experienced, such as dark-colored membranes in Southern climates, roof surfaces that experience reflected sunlight or photovoltaic installations, DEXcell® Cement Roof Board is the preferred DEXcell® product. Fire barrier...

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e DEXcell® brand Technical Guide-6

DEXcell® brand Glass Mat Roof Board A Board You’ll Get Attached To DEXcell® brand Glass Mat Roof Board has coated fiberglass facers and an enhanced mold-resistant gypsum core. This mold- and moisture-resistant gypsum panel is a substrate board, thermal barrier and/or coverboard for commercial roofing applications. It scores and cuts easily, and is specially coated on the front, back and sides for easy handling. Use it for a wide variety of roofing systems, including mechanically attached and ballasted single-ply membranes, thermal barriers and metal roofing. Sizes: 1/4 in. (6.4 mm), 1/2 in. (12.7...

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e DEXcell® brand Technical Guide-7

Technical Data PHYSICAL PROPERTIES 1/4" DEXcell® 1/2" DEXcell® 5/8" DEXcell® Glass Mat Glass Mat Glass Mat Thickness1, Nominal 1/4" (6.4 mm) 1/2" (12.7 mm) 5/8" (15.9 mm) Width1, Nominal 4' (1,219 mm) 4' (1,219 mm) 4' (1,219 mm) Length1, Standard 4' (1,219 mm), 8' (2,438 mm) 4' (1,219 mm), 8' (2,438 mm) 4' (1,219 mm), 8' (2,438 mm) Weight, Nominal 1.2 lbs. / sq. ft. (5.9 k/m2) 2.0 lbs. / sq. ft. (10 k/m2) 2.5 lbs. / sq. ft. (12 k/m2) 1 Edges Square Square Square Flexural Strength1, Parallel ≥ 40 lbf. (178 N) ≥ 80 lbf. (356 N) ≥ 100 lbf. (445 N) Humidified Deflection1 N/A ≤ 2/8" (6.4 mm) ≤ 1/8"...

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e DEXcell® brand Technical Guide-8

DEXcell® brand Glass Mat Roof Board PRODUCT COMPARISON DEXcell® Securock® DensDeck® DEXcell® Securock® DensDeck® DEXcell® Securock® DensDeck® Performance Glass Mat Glass Mat1 Glass Mat2 Glass Mat Glass Mat1 Glass Mat2 Glass Mat Glass Mat1 Glass Mat2 per ASTM D3273 ASTM StandardCl 177 Cl 177 Cl 177 Cl 177 Cl 177 Cl 177 Cl 177 Cl 177 Cl 177 1. USG Securock" data taken from USG literature, Form #RF39/rev. 6-14 2. Georgia-Pacific data taken from GP literature, Item #622602 - 8/14 Thickness1/47]1/T5/8" 4'x4' DEXcell Glass Mat Pieces per pallet 60 48 44 Sq. ft. per truck38,40023,04016,900 Weight per...

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e DEXcell® brand Technical Guide-9

DEXcell® brand FA Glass Mat Roof Board DEXcell® brand FA Glass Mat Roof Board has heavy-duty coated fiberglass facers and an enhanced mold-resistant gypsum core. This mold- and moisture-resistant gypsum panel is a substrate board, thermal barrier and/or coverboard for commercial roofing applications. It scores and cuts easily, and is specially coated on the front, back and sides for easy handling. Use it for a wide variety of roofing systems, including fully adhered, mechanically attached and ballasted roofs using single-ply membranes, modified bitumen, fluid-applied, built-up roofing, spray...

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e DEXcell® brand Technical Guide-10

DEXcell® brand FA Glass Mat Roof Board Technical Data PHYSICAL PROPERTIES 1/4" DEXcell® 1/2" DEXcell® 5/8" DEXcell® FA Glass Mat FA Glass Mat FA Glass Mat Thickness1, Nominal 1/4" (6.4 mm) 1/2" (12.7 mm) 5/8" (15.9 mm) Width1, Nominal 4' (1,219 mm) 4' (1,219 mm) 4' (1,219 mm) Length1, Standard 4' (1,219 mm), 8' (2,438 mm) 4' (1,219 mm), 8' (2,438 mm) 4' (1,219 mm), 8' (2,438 mm) Weight, Nominal 1.2 lbs. / sq. ft. (5.9 k/m2) 2.0 lbs. / sq. ft. (10 k/m2) 2.5 lbs. / sq. ft. (12 k/m2) 1 Edges Square Square Square Flexural Strength1, Parallel ≥ 40 lbf. (178 N) ≥ 80 lbf. (356 N) ≥ 100 lbf. (445 N)...

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e DEXcell® brand Technical Guide-11

PRODUCT COMPARISON DEXcell® FA Securock® DensDeck® DEXcell® FA Securock® DensDeck® DEXcell® FA Securock® DensDeck® Performance Glass Mat Gyp.-Fiber1 Prime2 Glass Mat Gyp.-Fiber1 Prime2 Glass Mat Gyp.-Fiber1 Prime2 1. USG Securock® data taken from USG literature, Form #RF39/rev. 6-14 2. Georgia-Pacific data taken from GP literature, Item #622602 - 8/14 Thickness14"1/2"5/8" 4' x 4' DEXcell® FA Glass Mat Pieces per pallet 60 48 44 Sq. ft. per truck38,40023,04016,900 Weight per truck, lbs.48,00048,38447,139 4' x 8' DEXcell® FA Glass Mat Pieces per pallet 44 30 30 Sq. ft. per truck38,02023,04017,280...

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.