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CUPA HEAVY 3 - Blue Black slate

Third party certifications:
  • BRE Certificate

    Certificate type

Cupa Pizarras

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.

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+44 (0) 20 3904 3001 www.cupapizarras.com/uk/
Application

For roof pitches.

Description

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:

  • Impermeable to water.
  • Weather and UV resistant.
  • Chemical resistant not affected by chemicals or pollutants (acid or alkali).
  • Not damaged by fungi, moss, insects, animals or birds.
  • Strong, while weighing substantially less than man-made roofing tiles.
  • Non-combustible.

Warranty:

Warranty available of up to 100 years on our natural slate products.

Application:

For roof pitches.

General information
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

500 x 250

Uniclass 2015
Pr_25_93_72_56 Natural slatesPrimary
Specification data - Natural slates
Product Reference

CUPA Heavy 3 - Blue Black Natural Slate

Slate size -
Length (minimum)

300 mm

350 mm

400 mm

500 mm

Width (minimum)

200 mm

Not available with 500 mm.

250 mm

For 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 mm

7–8 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.

Digital objects
PlatformCompatibleVersionCertified to
IFC
- 5 2.1
Revit
- 5 2.1
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