MASTIC · VAPOR BARRIER
WB WEATHER BARRIER ACRYL MASTIC · Water-based Mastic
SHC 103-25
SHC 103-25/26 is an acrylic, highly weather-resistant water-based mastic for most insulation, including polystyrene.
An all-weather water-based mastic for most insulation materials, including polystyrene.
Excellent flexibility, durability and fire resistance.
For indoor and outdoor use — dries to a smooth surface.
| Color | 103-25 : White · 103-26 : Light Aluminum Gray |
| Application | Trowel, rubber gloves |
| Specific Gravity (ASTM D1475) | 1.34 ±0.05 kg/Liter |
| Solids Content (ASTM D2369) | 56% ±2.6 by volume · 66% ±3.1 by weight |
| Coverage (SHTM 13) | 3.1 kg/㎡ · WFT 2.3 ㎜ · DFT 1.3 ㎜ |
| Drying Time (25℃ 50%RH · ASTM D1640) | Tack-free: 2 hours · Full cure: 16 hours |
| Service Temp. (SHTM 08) | -29℃ ~ 82℃ |
| Permeance (ASTM E96) | 1.0 perms @1.6㎜ DFT |
| Flash Point | No Flash Point in wet state |
| Flame Resistance (ASTM E84) | Class 1 or A |
| VOCs | <33 g/L |
