Application areas
Application areas for TECHNONICOL roofing mastic #21:
– Installation of mastic roofs and repair of all kinds of roofs;
– Waterproofing of engineering structures (basements, cellars, piles and other facilities buried in the ground or coming in contact with the damp environment);
– Waterproofing and anticorrosion treatment of metal surfaces, including pipelines, car bodies.
Description of material
TECHNONICOL roof mastic #21 is a material that is completely ready to use, consisting of oil bitumen, modified by artificial rubber, mineral fillers and organic solvent. After drying, it forms a high-strength covering with a wide range of operating temperatures, which considerably increases the service life of the protected structures.
Method of application
Mastic is applied to a processed surface using a paint brush, filling knife or by pouring and levelling. Mastic surface coverage: for mastic roof installation — 3.8–5.7 kg/m2; for waterproofing installation — 2.5–3.5 kg/m2.
Storage
Store in a dry place protected against sunlight at a temperature between –20°C and +30°C. Guaranteed storage period — 12 months.
Specifications:
| Property | TECHNONICOL Mastic #21 (TECHNOMAST) | |
| Strength of adhesion to the base, MPa, not less than | with concrete | 0,6 |
| with steel | 0,9 | |
| Strength of adhesion between layers, MPa, not less than | roll-fed material — roll-fed material | 0,3 |
| roll-fed material — concrete | 0,4 | |
| Shear strength of glued bond, kN/m, not less than | 4 | |
| Nominal strength, MPa, no less than | 1 | |
| Specific elongation when broken, % | 500 | |
| Water absorption over the course of 24 h, % by weight, not less than | 0,4 | |
| Mass fraction of non-volatile substances, %, not less than | 50 | |
| Heat endurance, °С, not less than | 110 | |
| Flexibility on R=5.0±0.2 mm beam at –50°C | no cracks | |
| Water resistance during 24 h at a pressure of 0.1 MPa | withstands |