USG No. 1 Moulding Plaster

An ornamental plaster used for creating decorative trim or running cornices.

Designed for use where expansion control, hardness and strength are not primary considerations.

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features and benefits

Often referred to as Plaster of Paris or soft plaster, USG No. 1 Moulding Plaster is used to create waste molds or temporary patterns where surface hardness and strength are not crucial. USG No. 1 Moulding Plaster:

  • Offers a controlled set that provides uniform workability
  • Has a fine grain — making it ideal for producing sharp detail when used neat for cast work
  • Complies with ASTM C28
  • Sets in 27-37 minutes after mixing
  • Requires 70 parts water by weight per 100 parts plaster
  • Is available in 50- and 100-pound bags

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

Frequently Asked Questions