USG Sheetrock® Brand Gypsum Base Imperial®

This product is designed specifically for the direct application of veneer plasters and comes in a variety of sizes.

USG Imperial® Gypsum Base panels have a distinctive blue face paper and provide a large rigid base for the application of veneer plasters. USG Imperial® Gypsum Base panels are installed like drywall and provide a solid foundation for veneer plaster applications.

Customer Service Center
1-800-950-3839
7 a.m. - 6 p.m. CT, Mon - Fri

USG4YOU Tech Support
1-800-USG4YOU (1-800-874-4968)
7:30 a.m. - 4 p.m. CT, Mon - Fri

Email USG Technical Support

Design & Specification
Assistance
Find your local architectural representative

jump to

features and benefits

USG Imperial® Gypsum Base panels are 4-foot wide and are available in ½-inch and 5/8-inch thicknesses, 8-to-14 foot lengths with regular, Firecode® X and Firecode® C formulations.

  • A large size, rigid base for economical application of gypsum veneer plasters 
  • Special gypsum core and multi-layered laminated face paper to control water absorption, provide maximum plaster bond and resist sag. 
  • Panels are designed for direct or resilient attachment to wood or steel framing. 
  • Imperial® brand bases comply with ASTM C1396/C1396M and have gypsum cores UL-Classified as non-combustible per ASTM E136.

Customer Service Center
1-800-950-3839
7 a.m. - 6 p.m. CT, Mon - Fri

USG4YOU Tech Support
1-800-USG4YOU (1-800-874-4968)
7:30 a.m. - 4 p.m. CT, Mon - Fri

Email USG Technical Support

Design & Specification
Assistance
Find your local architectural representative