SHEETROCK® Glass-Mat Liner Panels Mold Tough®

USG Boral SHEETROCK® Glass-Mat Liner Panels Mold Tough® have a non-combustible, moisture- and mould-resistant gypsum core that is encased in a moisture- and mould-resistant glass mat. The panels are fire resistance in accordance to BS EN 1364-1, and UL Classified (Type SLX) and feature double-beveled edges for easy installation


Water, Moisture, and Mould-resistant
  • Inorganic, non-woven glass fiber scrim on both sides.
  • Patented Mold Tough® technology with moisture and mould-resistant gypsum core.
  • Non-combustible per BS EN 1364-1 and ASTM E136 BS 476:Part4
  • Mould-resistant, scores a 10 (highest) when tested in accordance with ASTM D3273.
High-performance Liner Application
  • For walls enclosing elevator shafts, stairwells, and other vertical shafts that form the lifeline of a building.
  • Extensive ANSI/UL 263 Fire-resistant Designs (UL Designation SLX).
Meets Industry Standard
  • Comply with ASTM C1658 Part 6.
  • Comply with ASTM C1177 section 5.2.5 for water resistance.
Quick Installation
  • Easy to score and snap.
Warranted Performance
  • A 5 year warranty against manufacturing defects.
  • Backed by high-quality standards and outstanding service of USG Boral.

Application Fields

  • Ideal for use in high rise buildings enclosing the shaft wall of the lifts or elevators.
  • Area separation walls, mechanical and stair shafts.
  • High rise commercial and mixed-use buildings.

Additional Information


  • High-performance Glass-Mat panels with moisture and mould-resistance for use in USG Boral shaftwall and area separation wall systems.
  • UL Classified for fire resistance, surface burning characteristics and non-combustibility.
  • Comprehensive product and system testing ensures long-term performance and safety.


Technical Data and Notes

SHEETROCK® Glass-Mat Liner Panel Mold Tough® 

Physical Properties Per ASTM C1177 1” (15.4mm) USG Boral SHEETROCK® Glass-Mat Liner Panel Mold Tough®
Thickness, in. (mm) 1” (15.4mm)
Width and Lengths, mm. ( ft ) 610 x 1440 ( 1’x 8’)
Weight1, nominal (kg/m1) 11.1 ± 0.5
Flexural strength, parallel, lbf. (N) >80 lbf, per ASTM test method C473
Flexural strength, perpendicular, lbf. (N) >130 lbf, per ASTM test method C473
*R-Value-Thermal resistance (m1.K/W) 0.10
Reaction to Fire Non-combustible
Resistance to growth of mold- ASTM D3173 score 10/10
Water absorption (% of weight) per ASTM C1177 < 10%

*R: Data of thermal resistances are based on tabulated design values provided in the BS EN 1254:2000- “Building materials and products. Hygrothermal properties” standard for gypsum boards.

USG Boral Glass-Mat Absorption Test

  • USG Boral Glass-Mat Absorption Test
    USG Boral Glass-Mat Absorption Test

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