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

Featured Items

Information provided are for reference purpose only and due care has been taken to ensure accuracy at time of publication. Products, specifications and requirements may vary according to geographical locations and applications. As each project is unique, please contact your local USG Boral representative for further assessment.