All Weather Roof Coat/Liquid Rubber 21
Application areas for 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
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.
Store in a dry place protected against sunlight at a temperature between –20°C and +30°C. Guaranteed storage period — 12 months.
|Property||Mastic #21 (Liquid rubber 21)|
|Tin sizes (KG)||3/20|
|Strength of adhesion to the base, MPa, not less than||with concrete||0,6|
|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|