STA-KOOL® 390, White acrylic sealant flexible roof patch is an extra tough, flexible repair compound designed to patch splits, cracks and holes in roof surfaces. This water-based patch dries quickly to a non-tacky surface which offers great adhesion to all coatings applied over it. It is designed to repair cracks and holes up to 1 in width. STA-KOOL® 390 should be used with universal patching fabric. STA-KOOL® 390 remains flexible while it expands and contracts with your repair, making it ideal to use with all STA-KOOL® products.
| Application Method | : | Stiff Bristle Paint Brush |
| Boiling Point | : | 212 to 245 deg F |
| Color | : | White |
| Compositions | : | Acrylic Polymer Solution, Calcium Carbonate, Kaolin Clay, Titanium Dioxide, Dinonyl Pthalate, Propylene Glycol, Texanol Ester |
| Curing Time | : | 24 to 48 hr |
| Density | : | 12.06 lb/gal |
| Flash Point | : | >247 deg F |
| Odor/Scent | : | Acrylic Paint-Like |
| Specific Gravity | : | 1.44 |
| Temperature Rating | : | 65 deg F |
| VOC Content | : | <45 g/L |
| Viscosity | : | 190, 000 cPs |
| pH Range | : | 8 |
| Form | : | Liquid |
| Net Content | : | 1 gal |
