BRE Certificate
Certificate type
CUPA HEAVY 3 - Blue black natural slate with non rusting metallic particles and thin laminations. Split to an average thickness of 7.5 mm. Produced by CUPA PIZARRAS.
For roof pitches.
Natural blue-black slate with a slightly gritty texture, and in some samples well defined parallel lines are clearly visible on the cleavage surfaces.
Another obvious feature of the slate is the presence of metallic cubes approximately 2 mm in size. Sometimes these cubes are randomly distributed throughout the slate, while in other cases they are concentrated in discrete bedding layers. These cubes are iron sulphide, known as pyrite. Heavy 3 is the suitable choice for repair and replacement of traditional roofs in Scotland.
Features and benefits:
Warranty:
Warranty available of up to 100 years on our natural slate products.
Application:
For roof pitches.
Finish | Heavy |
Color | Blue black |
Material | Slate |
Shape | Rectangular |
Size | 300 x 200 350 x 200 400 x 200 400 x 220 400 x 250 |
Uniclass 2015 | |
CAWS | H62/105 Roof slating H62/110 Roof slating with counterbattens H62/3 Roof slating H62/5 Roof slating with counterbattens |
Product Reference | CUPA Heavy 3 - Blue Black Natural Slate |
Slate size | - |
Length (minimum) | 300 mm350 mm400 mm500 mm |
Width (minimum) | 200 mmNot available with 500 mm. 250 mmFor 400 mm and 500 mm only. |
Standards | - |
Product specification | To BS EN 12326 |
Standards methods of test | To BS EN 12326 |
Properties | - |
Type | Normal |
Dimensional tolerances | Complies |
Nominal thickness and individual thickness variation | Complies |
Characteristic modulus of rupture (transverse) | 62–64.6 MPa |
Characteristic modulus of rupture (longitudinal) | 62–64.6 MPa |
Water absorption | 0.22–0.28% |
Thermal cycle test | Code T1 |
Carbonate content | 0.4–0.46% |
Sulfur dioxide exposure test | Code S1 |
Non-carbonate carbon content (maximum) | 0.39% |
Thickness | 3.5 mm7–8 mm |
Specific weight | 2.74 gm/cm³ |
Standard product features | Colour: Blue-black. Features: Metallic cubes on surface. Finish: Gritty. Material: Natural slate. Shape: Rectangular. Country of origin: Spain. |
Platform | Compatible | Version | Certified to |
---|---|---|---|
![]() | - | 5 | 2.1 |
![]() | - | 5 | 2.1 |
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