Please note: We do our best to ensure that this material estimator is accurate. However, Smooth-On offers no warranty either expressed or implied regarding the accuracy/reliability of this information. Smooth-On assumes no liability for loss or damage associated with use of material estimators. If this is a critical project, we encourage you to verify estimator results using the long-hand method of correlating the volumetric yield of the material with mold cavity. You can also contact us for assistance.
Smooth-On, Inc. will be closed Monday, May 29th in observance of Memorial Day, resuming operations Tuesday, May 30th.
Polymer Modifiers for Concrete and Gypsum
Forton® 774 is the world-wide standard concrete additive for making lightweight GFRC panels. It is recognized by the PCI as the only polymer supported with a 20 year durability study. Matrix-C® polymer additive is a less expensive version.
Alpha gypsum additives make gypsum far stronger and more weather resistant. Forton® and Matrix products are a lower cost alternative to resins. You can cast solid or make lightweight architectural and sculpture castings by reinforcing with glass fiber that are suitable for outdoor display. A variety of casting effects are possible including marble, metal, stone and more.
duoMatrix® NEO is a versatile polymer modified gypsum system that has superior physical and performance properties compared to regular gypsum products. Part A is powder and Part B is liquid. The mix ratio of NEO is a convenient 2A:1B by volume.