Mold Defense® Shaftliner Type X drywall

Continental Mold Defense Shaftliner Type X drywall is designed for use as lining in elevator shafts, ventilation shafts and stairwells, for area separation walls in residential housing and for interior building applications that require fire resistance.

The product has a specially formulated, noncombustible, mold-resistant gypsum core enhanced with glass fibers for strength and additional fire resistance. It features a green, water-repellent, mold and mildew-resistant paper facing on its front, back, and long edges.

Mold Defense Shaftliner Type X panels are only one component of reliable shaft or area separation wall assemblies. In order to obtain proper fire-rated resistance, the panels must be used as specified in the listed design. (See the Continental Shaftwall design literature or the Underwriters Laboratories [UL] listings for more information.)

Mold Defense Shaftliner Type X has been tested for a wide range of ceiling, wall and enclosure applications:

  • Elevator enclosures
  • Stairwell enclosures
  • Mechanical enclosures for electrical, plumbing, HVAC and ventilation services
  • Unlined shafts for return-air handling
  • Area separation fire walls
  • Corridor ceilings
  • Soffits

Low installation cost:
Mold Defense Shaftliner Type X installs easily and quickly when compared to block construction. It cuts and snaps like standard drywall.

Mold resistance: Mold Defense Shaftliner Type X provides enhanced protection against the growth of mold and mildew.

Fire resistance:
Mold Defense Shaftliner Type X is formulated to perform in accordance with ASTM C 1396, Section 6, and C 442, Type X, and is UL labeled (Type LGFCSL).


Core: Noncombustible, dimensionally stable, inert gypsum enhanced with glass fibers for strength and fire resistance. Chemically treated to resist mold and mildew.

Paper: 100 percent recycled; water repellent; chemically-treated to resist mold and mildew on the surface. Product front, back and edges are green.

Long edges: Double beveled for ease of installation.

Emissions: Asbestos free; GREENGUARD certified; listed as a low-emitting material.

Mold Defense offers enhanced protection against mold and mildew growth on both the product's surface and in its core compared to ordinary drywall products. Under controlled testing conditions, Mold Defense achieved an average panel score of 10 out of a possible 10 - the highest level of performance for mold resistance using ASTM D 3273.