Weather Defense® Platinum Sheathing Type X
Lafarge Weather Defense® Platinum Type X drywall is a moisture, mold and fire-resistant exterior wall sheathing designed to be covered by an exterior-finish cladding, such as siding, brick, masonry veneer or wire-lath stucco.
Weather Defense Platinum Type X has a specially formulated, fire-rated, moisture and mold-resistant gypsum core covered with a coated fiberglass mat on the board's front, back and long edges. Weather Defense Platinum Type X can be used in exterior insulation and finish systems (EIFS) when specified by the EIFS manufacturer, and as a substrate for air and water-resistant barriers, such as wraps, self-adhesive membranes and liquid-applied coatings.
Weather Defense Platinum Type X offers superior resistance to normal weather conditions and will, in most applications, provide protection from exposure to the elements for up to 12 months (subject to the terms, conditions, and exclusions of Lafarge's limited warranty). Using a flexible sealant to fill all exposed cutouts and joints can provide additional protection if construction is delayed for an extended period. To ensure optimal Type X fire-resistant performance, recommended installation procedures should be followed.
Weather Defense Platinum Type X is lightweight, scores, cuts and fastens easily and has coated facers to provide irritation-resistant handling. It is designed for use in applications that require direct mechanical attachment to wood or metal framing, or steel-stud curtain walls. It can also be used as a component of fire-rated assemblies. Exterior cladding should be attached mechanically through the sheathing and directly to the framing.
Weather Defense Platinum offers enhanced protection against the growth of mold and mildew on its surface and in its core compared to paper-faced sheathing. Under controlled testing conditions, Weather Defense Platinum achieved an average panel score of 10 out of a possible 10, the highest level of performance for mold resistance using ASTM D 3273. As with any building material, avoiding exposure to water during handling, storage and installation is the best way to avoid the formation of mold and mildew.
Note: Weather Defense Platinum Type X is not a structural product and is not intended as a replacement for plywood or structurally engineered sheathing requiring racking qualities. Weather Defense Platinum Type X should not be used where temperatures exceed 125 degrees Fahrenheit for extended periods or in areas of extreme humidity.
Weather Defense Platinum Type X is designed for exterior wall and soffit applications where resistance to normal weather conditions is desired. Applicable areas include:
Mold resistance: Weather Defense Platinum Type X offers enhanced protection against the growth of mold and mildew on its surface and within its core.
Weather resistance: Weather Defense Platinum Type X will, in most applications, provide protection from exposure to the elements for up to 12 months (subject to the terms, conditions, and exclusions of Lafarge's limited warranty).
Warranted performance: Weather Defense Platinum Type X offers warranted performance for a period of five years when used as a substrate in architecturally specified EIFS. Please refer to Lafarge's limited warranty (link below) for more details.
Core: Noncombustible, dimensionally stable, inert gypsum enhanced with glass fibers for strength and fire resistance and specially formulated for mold and moisture resistance.
Facers: Coated fiberglass; front and back are platinum colored.
Long edges: Square.
Recycled content: More than 90 percent by weight.
Emissions: Asbestos free.
Weather Defense Platinum Type X can contribute to the U.S. Green Building Council's LEED Credit Qualification in several credit categories to assist in obtaining LEED certification. Visit www.lafargenorthamerica.com for more details on specific credit contributions and documentation.
Standards and Codes:
Weather Defense Platinum Type X is formulated to perform in accordance with ASTM C 1177 Type X.
Weather Defense Platinum Type X is UL classified for fire resistance (File No. R18482, as Type LGFC-WD) and surface burning (File No. R16102, tested in accordance with ASTM E 84); flame spread = 10; smoke developed = 0.
Core combustibility (tested in conformance with ASTM E 136): noncombustible.
Install according to Gypsum Association standard GA-253 or GA-254 or ASTM C 1280. For fire-rated construction, consult GA-600, Fire Resistance Design Manual, and the UL Fire Resistance Directory. Install with the "Lafarge Weather Defense" logo toward the exterior. Joint treatment is not required to maintain weatherability. Lafarge's limited warranty is provided upon request.
Wear safety glasses and NIOSH-approved respirators during cutting, breaking, rasping, or other dust-producing activities.
Material safety data sheets (MSDSs) are available for all Lafarge products upon request.
Weather Defense Platinum Type X