GRG is a non-combustible material with a zero flame/zero smoke rating, designed for interior applications. Glass reinforced gypsum is similar to old world plaster, but with a much stronger physical properties. It can be cast into a multitude of finishes, textures and shapes. It is our least expensive material, but is only suitable for interior applications. Typical applications are columns, domes, mouldings, ceiling panels and beams.
Specifications - Glass Reinforced Gypsum (GRG): | Barcol Hardness ASTM-D-2583 | 105 |
| Compression ASTM-C-39 (Pounds Per Square Inch): | 5,800 |
| Coefficient of Thermal Expansion (Degrees Fahrenheit): | 5.4 x 106 |
| Density ASTM-D-792 (Pounds Per Cubic Foot): | 110.00 |
| Flammability ASTM-E-84: |
| Flame Spread: | 0 |
| Smoke Develop: | 0 |
| Flexural Strength ASTM-D-790 (Pounds Per Square Inch): | 4,192 |
| Impact Strength ASTM-D-256 | 12.90 |
| Tensile Strength ASTM-D-638 (Pounds Per Square Inch): | 1,340 |
| Unit Weight (Pounds Per Square Foot (@1/2")): | 2 |
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