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Product Code: 35584833---292



DensGlass™ Exterior Sheathing

DensGlass™ exterior sheathing is the premium gypsum sheathing in the marketplace. The product features a moisture-resistant core and enhanced fiberglass mats, instead of paper facings, to resist the effects of moisture exposure during and after construction. It is so weather-resistant that Georgia-Pacific backs it with a 12-Month Weather Exposure Limited Warranty.

DensGlass exterior sheathing enhancements announced in 2008 include enhanced fiberglass mats which offer even better wind uplift resistance, make the product easier to handle, and reduce the amount of primer needed for self-adhered membranes. The improved wind load values of DensGlass sheathing enable it to withstand winds in excess of 155 mph – a Category 5 Hurricane – when installed horizontally with the proper screws and spacing.

This Georgia-Pacific sheathing is the ideal substrate behind brick, siding, EIFS, stucco and other permanent claddings. It is a superior choice for architects and builders who are concerned about construction schedules that might be delayed by adverse weather conditions. For information about how building with Dens™ Brand fiberglass mat gypsum panels can allow contractors more latitude in scheduling and more options for closing in a structure, faster.


Because of the superior performance of DensGlass™ sheathing, it is specified for exterior walls, ceilings and soffits in a wide variety of applications. These include exterior insulation and finish systems (EIFS); cavity brick or stone veneer applications; cladding such as wood siding, vinyl siding, composition siding, wood shingles, shakes, conventional stucco systems, plywood siding panels; and interior finish systems that require a substrate panel with superior fire and moisture resistance.

When tested, as manufactured, in accordance with ASTM D 3273, DensGlass non-paper-faced gypsum sheathing panels score a 10, the highest level of performance for mold resistance under the ASTM D 3273 test method.

The score of 10, in the ASTM D 3273 test, indicates no mold growth in a 4-week controlled laboratory test. The mold resistance of any building product when used in actual job site conditions may not produce the same results as were achieved in the controlled, laboratory setting. No material can be considered mold proof. When properly used with good design, handling and construction practices, DensGlass Gold sheathing provides increased mold resistance compared to standard paper-faced wallboard products.

DensGlass Gold exterior sheathing has been tested in accordance with ASTM E 330, which evaluates the structural performance of exterior building materials under uniform static air pressure differences, using a test chamber. DensGlass Gold exterior sheathing can withstand winds in excess of 155 mph (Category 5 hurricane) when installed horizontally with the appropriate screw type and spacing over a properly engineered wall system and in accordance with the appropriate specifications.


Drill down in the categories below for detailed information, illustrations and performance characteristics for a variety of wall systems and assemblies using gypsum wallboards, sheathing, shaftliner and backer boards from Georgia-Pacific.

The data relating to fire and sound-tested assemblies is based on the characteristics, properties and performance of materials and systems obtained under controlled test conditions as set forth under the appropriate ASTM standard, such as E 108 (fire), E 90 (sound) or E 72 (structural).

Area Separation Walls

  • Wood-Framed Wall
  • Steel-Framed Wall
  • Floor/Ceiling Wood-Framed
  • Exterior Wood-Framed Wall
  • Exterior Steel-Framed Wall
  • Column Fire Protection
  • Beam Fire Protection

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