Content page
From [Institution name]
| Property |
Requirement |
Result |
|---|---|---|
| Thickness (mm) |
≥ 0.33 |
0.62 |
| Thickness of zinc coating ( g/m2 ) |
≥ 275 |
315 |
| Coating quality |
Smooth and uniform, free of pinholes, cracks, blisters and flaking |
Pass |
| Flexibility |
No flaking or microcracking |
Pass |
| Humidity resistance |
No formation of blisters |
Pass |
| Durability |
No sign of any change |
Pass |
| Total dry film thickness ( µm) - AstonWood® |
≥ 25 |
25 |
| Total dry film thickness ( µm) - StoneCrest® Tile |
≥ 25 |
27 |
| Total dry film thickness ( µm) - StoneCrest® Slate |
≥ 25 |
28 |
| Dry film hardness |
No rupture |
Pass |
| Adhesion - dry |
No removal of film |
Pass |
| Adhesion - wet |
No removal of film |
Pass |
| Impact resistance |
No removal of film |
Pass |
| Abrasion resistance - AstonWood® |
Coefficient value ≥ 40 |
44.4 |
| Abrasion resistance - StoneCrest® Tile/Slate |
Coefficient value ≥ 40 |
41.7 |
| Acid resistance - 10% sulphuric acid |
No loss of integrity or appreciable change |
Pass |
| Acid resistance - 10% hydrochloric acid |
No loss of integrity or appreciable change |
Pass |
| Acid resistance - 10% nitric acid |
No loss of integrity or appreciable change |
Pass |
| Salt spray resistance - AstonWood® |
≥ 7 rating |
7 |
| Salt spray resistance - StoneCrest® Tile/Slate |
≥ 7 rating |
10 |
| Pressure (kPa) |
Time (s) |
Requirement |
ResultFootnote (1) |
|---|---|---|---|
0.5 |
10 |
No evidence of deformation, permanent damage or failure |
Pass |
1.0 |
10 |
No evidence of deformation, permanent damage or failure |
Pass |
1.4 |
10 |
No evidence of deformation, permanent damage or failure |
Pass |
1.9 |
10 |
No evidence of deformation, permanent damage or failure |
Pass |
2.9 |
10 |
No evidence of deformation, permanent damage or failure |
Pass |
3.8 |
10 |
No evidence of deformation, permanent damage or failure |
Pass |
4.3 |
10 |
No evidence of deformation, permanent damage or failure |
Shingle unclipped |
4.8 |
10 |
No evidence of deformation, permanent damage or failure |
– |
| Wind Speed (km/h) |
Simulated Rainfall (L/m2·min) |
Time (s) |
Requirement |
ResultFootnote (1) |
|---|---|---|---|---|
| 34-59 |
3.4 |
5 |
No leakage or damage |
Pass |
| 84-96 |
3.4 |
5 |
No leakage or damage |
Pass |
| 104-117 |
3.4 |
5 |
No leakage or damage |
Pass |
| 117-144 |
3.4 |
5 |
No leakage or damage |
Pass |
| 154-170 |
3.4 |
5 |
No leakage or damage |
Pass |