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Basic Physical and Mechanical Properties of "Delta Aluminum Roofing Shingles"

Property 

Requirement 

Result

Thickness 

≥ 0.48 mm 

0.52 

Coating thickness 

≥ 20 μm 

21 

Coating quality 

Finish coat must be uniform – free of cracks, pinholes, blisters or flaking 

Passed 

Flexibility 

No cracking or flaking of coating 

Passed 

Humidity resistance 

No formation of blisters 

Passed 

Durability 

No more than slight colour change; not greater than No. 8 degree of  chalking; no checking, nor cracking 

Passed 

Hardness 

No rupture 

Passed 

Impact resistance 

No visible cracking 

Passed 

Film adhesion -   dry 

No removal of film 

Passed 

Film adhesion ­ wet 

No removal of film 

Passed 

Salt spray resistance 

≤ 1.5 mm for scored line 

Passed 

Traffic load 

900 N 

Passed 

Dynamic Pressure Water Infiltration Test for "Delta Aluminum Roofing Shingles"

Wind Speed (km/h)

Duration (min.)

Requirement 

Results 

34-59 

No leakage or damage  

No sign of any water leakage or damage to roofing product 

84-96 

No leakage or damage  

No sign of any water leakage or damage to roofing product 

104-117 

No leakage or damage  

No sign of any water leakage or damage to roofing product 

117-144 

No leakage or damage  

No sign of any water leakage or damage to roofing product 

154-170 

No leakage or damage  

No sign of any water leakage or damage to roofing product 

Wind Uplift Test for "Delta Aluminum Roofing Shingles" Offset by Half of a Tile, Three Nails per ShingleFootnote (1)

Pressure (kPa) 

Requirement 

Results 

0.5 

No evidence of deformation of permanent damage 

No damage for permanent deformation after pressure released 

1.0 

No evidence of deformation of permanent damage 

No damage for permanent deformation after pressure released 

1.4 

No evidence of deformation of permanent damage 

No damage for permanent deformation after pressure released 

1.9 

No evidence of deformation of permanent damage 

No damage for permanent deformation after pressure released 

2.9 

No evidence of deformation of permanent damage 

No damage for permanent deformation after pressure released 

3.8 

No evidence of deformation of permanent damage 

No damage for permanent deformation after pressure released 

4.3 

No evidence of deformation of permanent damage 

No damage for permanent deformation after pressure released 

4.8 

No evidence of deformation of permanent damage 

No damage for permanent deformation after pressure released 

8.6 

Ultimate load 

Panels unclipped 

Wind Uplift Test for "Delta Aluminum Roofing Shingles" Offset by Half of a Tile, One Nail per ShingleFootnote (1)

Pressure (kPa) 

Requirement 

Results 

0.5 

No evidence of deformation of permanent damage 

No damage for permanent deformation after pressure released 

1.0 

No evidence of deformation of permanent damage 

No damage for permanent deformation after pressure released 

1.4 

No evidence of deformation of permanent damage 

No damage for permanent deformation after pressure released 

1.9 

No evidence of deformation of permanent damage 

No damage for permanent deformation after pressure released 

2.9 

No evidence of deformation of permanent damage 

No damage for permanent deformation after pressure released 

3.8 

No evidence of deformation of permanent damage 

No damage for permanent deformation after pressure released 

4.3 

No evidence of deformation of permanent damage 

No damage for permanent deformation after pressure released 

4.8 

No evidence of deformation of permanent damage 

Panels unclipped 

Wind Uplift Test for "Delta Aluminum Roofing Shingles" Offset by 60 mm (2-⅜ in.), One Nail per ShingleFootnote (1)

Pressure (kPa) 

Requirement 

Results 

0.5 

No evidence of deformation of permanent damage 

No damage for permanent deformation after pressure released 

1.0 

No evidence of deformation of permanent damage 

No damage for permanent deformation after pressure released 

1.4 

No evidence of deformation of permanent damage 

No damage for permanent deformation after pressure released 

1.9 

No evidence of deformation of permanent damage 

No damage for permanent deformation after pressure released 

2.9 

No evidence of deformation of permanent damage 

No damage for permanent deformation after pressure released 

3.8 

No evidence of deformation of permanent damage 

Panels unclipped and kinked 

4.3 

No evidence of deformation of permanent damage 

n/a 

4.8 

No evidence of deformation of permanent damage 

n/a 

Wind Uplift Test for "Delta Aluminum Roofing Shingles" Offset by 60 mm (2-⅜ in.), Two Nails per ShingleFootnote (1)

Pressure (kPa) 

Requirement 

Results 

0.5 

No evidence of deformation of permanent damage 

No damage for permanent deformation after pressure released 

1.0 

No evidence of deformation of permanent damage 

No damage for permanent deformation after pressure released 

1.4 

No evidence of deformation of permanent damage 

No damage for permanent deformation after pressure released 

1.9 

No evidence of deformation of permanent damage 

No damage for permanent deformation after pressure released 

2.9 

No evidence of deformation of permanent damage 

No damage for permanent deformation after pressure released 

3.8 

No evidence of deformation of permanent damage 

No damage for permanent deformation after pressure released 

4.3 

No evidence of deformation of permanent damage 

No damage for permanent deformation after pressure released 

4.8 

No evidence of deformation of permanent damage 

No damage for permanent deformation after pressure released 

12.9 

Ultimate load 

Panels unclipped and could not hold any further load 

Wind Uplift Test for "Delta Aluminum Roofing Shingles" Offset by 110 mm (4-⅜ in.), Two Nails per ShingleFootnote (1)

Pressure (kPa) 

Requirement 

Results 

0.5 

No evidence of deformation of permanent damage 

No damage for permanent deformation after pressure released 

1.0 

No evidence of deformation of permanent damage 

No damage for permanent deformation after pressure released 

1.4 

No evidence of deformation of permanent damage 

No damage for permanent deformation after pressure released 

1.9 

No evidence of deformation of permanent damage 

No damage for permanent deformation after pressure released 

2.9 

No evidence of deformation of permanent damage 

No damage for permanent deformation after pressure released 

3.8 

No evidence of deformation of permanent damage 

No damage for permanent deformation after pressure released 

4.3 

No evidence of deformation of permanent damage 

No damage for permanent deformation after pressure released 

4.8 

No evidence of deformation of permanent damage 

No damage for permanent deformation after pressure released 

7.4 

Ultimate load 

Panels unclipped and could not hold any further load