Performance index of outer wall external insulation system of rock wool
item | unit | performance index | test method | ||
Weatherability | Appearance after weatherability test | — | There shall be no coating blistering or peeling, protective layer hollowing or fall off damage, shall not cause leakage crack | JGJ144appendixA.3 | |
Surface layers and tensile bond strength of insulation | MPa | It should not be less than 0.01MPa, and the damaged part should be located in the insulation layer | JGJ144appendixA.3 | ||
Water absorption (soaking for 1 hours) | g/m2 | ≤1000 | JGJ144appendixA.6 | ||
Water vapor permeation density | g/(m2·h) | ≥1.67 | JGJ144appendixA.11 | ||
Resistance to freezing and thawing | Appearance after freezing and thawing
| — | After 30 freeze-thaw cycles protection layer, no empty drum, fall off, no leakage crack | JGJ144appendixA.4 | |
Tensile bond strength of protective layer and insulating layer | MPa | It should not be less than 0.01MPa, and the damaged part should be located in the insulation layer | JGJ144appendixA.4 | ||
Impermeable | — | 2H waterproof (sample plaster layer inside anhydrous penetration) | |||