Specification

TECHNICAL DATA SHEET

USG DUROCK

™

BRAND

SEALANT

• Easy to apply

• Long open time

• Nonﬂ ammable

• Low odor

• VOC compliant in California

• Freeze-thaw stable

USG Durock™ Brand Sealant is a multi-purpose, waterproof sealing and bonding compound for

use with USG Durock™ Brand Shower System components. This unique sealant is a silane-modiﬁ ed

polymer and is free of solvents and isocyanates. It cures via exposure to atmospheric moisture

to form a highly durable, ﬂ exible seal. It has been formulated to oﬀ er outstanding primerless

adhesion to most common building materials, including: tile backerboard, ceramic tile, stone,

drywall, aluminum, glass, XPS and EPS foam, wood, and ABS plastic.

Sizes and Packaging: 10.1 FL. OZ. (298 ml) cartridge - 12 cartridges/carton

Shipped in packaging units as shown.

USG Durock Sealant is distributed throughout the United States. Contact a USG sales o ce or

representative for additional information.

USG Durock Sealant is composed of calcium carbonate CAS 1317-65-3, polymer CAS proprietary,

plasticizer CAS proprietary, N-beta-(aminoethyl)-gamma-aminopropyltrimethoxysilane and

vinyltrimethoxysilane.

All materials should be delivered and stored in their original unopened package and stored in an

enclosed shelter providing protection from damage and exposure to the elements.

USG Durock Sealant can be applied directly on clean, dry, properly prepared and attached

surfaces, including: tile backerboard, ceramic tile, stone, drywall, aluminum, glass, XPS and EPS

foam, wood, and ABS plastic.

Remove any loose paint, dust, dirt, oil, grease and eﬄ orescence before applying.

Skin-over time 8 minutes, tack-free time 45 minutes, cure time 24 hours at 75°F (24°C), 50%

relative humidity, applied at 3/8 in. (9.5 mm) thickness.

Cleanup: Immediately remove sealant from unwanted areas using dry cloth or mineral spirits.

Do not apply sealant to contaminated or loose surfaces.

DESCRIPTION

PRODUCT DATA

AVAILABILITY

COMPOSITION AND MATERIALS

DELIVERY AND STORAGE OF

MATERIALS

APPLICATION AND CLEANUP

LIMITATIONS

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TECHNICAL DATA SHEET USG DUrOCK™ BrAnD SEALANT • • • • • • Easy to apply Long open time Nonflammable Low odor VOC compliant in California Freeze-thaw stable DESCriPTiOn USG Durock™ Brand Sealant is a multi-purpose, waterproof sealing and bonding compound for use with USG Durock™ Brand Shower System components. This unique sealant is a silane-modified polymer and is free of solvents and isocyanates. It cures via exposure to atmospheric moisture to form a highly durable, flexible seal.
PAGE 2
Technical Information Appearance Smooth Color White Specific gravity 1.50 Extrusion rate (g/minute) 200 Slump (in) 0 Skin-over time (minute) 8 Tack-free time (minute) 45 Shore “A” 50 Tensile strength (psi) 325 Elongation (%) 275 Modulus (psi) 300 Solid (%) 98 VOC Content g/L 15 Product Information See usg.com for the most up-to-date product information. Warning DIRECT CONTACT OF UNCURED SEALANT IRRITATES EYES AND MAY IRRITATE SKIN.