MASTIC · VAPOR BARRIER
PRIMARY MASTIC
SHC 104-90/91
SHC 104-90/91 is a chlorosulfonated polyethylene (CSPE) rubber based mastic.
Ideal finish for cold insulation including cellular glass, PIR.
Tough, flexible, fire resistant elastomeric finish · Excellent vapor barrier.
Outdoor use with good color retention, chemical and UV resistance.
| Color | SHC 104-90 : White SHC 104-91 : Gray |
| Application | Trowel, Rubber glove |
| Specific Gravity | 1.25 ±0.05 kg/Liter (ASTM D1475) |
| Solids Content | 42% ±2.0 by volume · 60% ±2.8 by weight (ASTM D2369) |
| Coverage | 2.6 kg/㎡ · WFT 2.1 ㎜ · DFT 0.9 ㎜ (SHTM 13) |
| Drying Time | Set to touch: 5 hours · Dry through: 48 hours (25℃ 50%RH · ASTM D1640) |
| Service Temp. | -46℃ ~ 104℃ (SHTM 08) |
| Permeance | 0.024 perms @1.3㎜ DFT (ASTM E96) |
| Flash Point | ≥43℃ (ASTM D3278) |
| Flame Resistance | Class 1 or A (ASTM E84) |
