Summary
SIGA 140 is a smooth, slate with a purple sheen, carefully selected as a suitable alternative to indigenous purple slates, sourced from USA. Its colour makes it popular in Scotland and the North West.
SIGA 140 is a smooth, slate with a purple sheen, carefully selected as a suitable alternative to indigenous purple slates, sourced from USA. Its colour makes it popular in Scotland and the North West.
Third party certification
Self-declared
Self-declared
Color
Purple
Purple
Finish
Smooth
Smooth
Material
Slate
Slate
Shape
Rectangle
Rectangle
Length
508 mm, 457 mm, 406 mm, 356 mm, 305 mm
508 mm, 457 mm, 406 mm, 356 mm, 305 mm
Width
203 mm, 381 mm, 254 mm, 305 mm, 406 mm, 457 mm, 508 mm
203 mm, 381 mm, 254 mm, 305 mm, 406 mm, 457 mm, 508 mm
Height
7 mm
7 mm
Warranty description
75 year
75 year
Specification
Slate type
-
-
Source
USA.
USA.
Colour
Purple.
Purple.
Slate size
-
-
Length (minimum)
508 mm.
406.4 mm
Width (minimum)
304.8 mm.
203.2 mm
Standards
-
-
Product specification
To BS EN 12326-1.
To BS EN 12326-1.
Methods of test
To BS EN 12326-1.
To BS EN 12326-1.
Properties
-
-
Dimensional tolerances
Deviations from declared length, width, edge straightness, rectangularity, and flatness are not to exceed values specified in BS EN 12326-1, clause 5.12.
Deviations from declared length, width, edge straightness, rectangularity, and flatness are not to exceed values specified in BS EN 12326-1, clause 5.12.
Nominal thickness and individual thickness variation
To BS EN 12326-1, clause 5.2.
To BS EN 12326-1, clause 5.2.
Characteristic modulus of rupture (Transverse)
67.7 Mpa.
67.7 Mpa.
Characteristic modulus of rupture (Longitudinal)
65.5 Mpa.
65.5 Mpa.
Water absorption
Code W1(>0.6).
Code W1(>0.6).
Freeze-thaw resistance
No test required.
No test required.
Thermal cycle test
Code T1.
Code T1.
Carbonate content
Less than 20%.
Less than 20%.
Sulfur dioxide exposure test
Code S1.
Code S1.
Non-carbonate carbon content (maximum)
2%.
2%.
Additional properties
Thickness
7 mm.
7 mm.
Reaction to fire
Class A1.
Class A1.
Sustainability data
Contains Red List materials
No
No
Country of material origin
United States
United States
Country of product manufacture
United States
United States
Material
Slate
Slate
Recyclability
Undamaged slates are salvaged and reused.
Undamaged slates are salvaged and reused.
Expected Life
75 year
75 year