heavy3 natural slate roofing

CUPA HEAVY 3 A ROOF FOR LIFE

CUPA HEAVY 3 slate is quarried from the Group’s No3 quarry in San Pedro de Trones (Leon) in northern Spain. This quarry has been in operation since 1892 and produces some 25,000 tons each year. The slate is blue black with a slightly gritty texture, and in some samples well defined parallel lines are clearly visible on the cleavage surfaces.

Slate from the San Pedro quarry is produced in two thicknesses, 3.5mm and 7-8mm; the thicker variant being the preferred choice in Scotland. The extra thickness and weight give it strength to withstand the high wind speeds and driving rain common throughout Scotland.

It is ideally suited for the Scottish market due to its close similarity to the traditional highland slate from Ballachulish that is no longer produced. Both are blue black in colour and of similar thickness, and pyrite crystals are usually present in both.

roofing slate heavy3 detail

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CUPA HEAVY 3 IS THE BEST CHOICE FOR REPAIR AND REPLACEMENT
OF TRADITIONAL ROOFS IN SCOTLAND

The inclement weather in these markets means that thicker slate is needed to protect buildings from dampness through capillarity and also from the high winds that prevail in some parts of Scotland. Capillarity refers to how easily a liquid can rise through a pore. It is a physical phenomenon and therefore it is not limited to slate and affects all overlapped laminated materials.

Heavy 3 at a thickness of 7-8 mm is ideally suited to combat dampness which has resulted in it being widely used on conservation projects.

CUPA Heavy 3 natural slates are available in the following sizes:

  • format 30x2030x20cm
    (12x8”)
  • format 35x2035x20cm
    (14x8”)
  • format 40x2040x20cm
    (16x8”)
  • format 40x2540x25cm
    (16x10”)
  • format 50x2550x25cm
    (20x10”)

WHY CHOOSE HEAVY 3 FOR YOUR ROOF

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Heavy 3 is a true heavy

Heavy 3 is produced at a thickness of 7-8 mm. This extra thickness gives it strength to combat dampness, high wind speeds and driving rains common throughout Scotland.

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No re-roofing of any Heavy 3 slate roof

Since CUPA PIZARRAS’ slate started to be used in Scotland more than 20 years ago, there have been no cases of Heavy 3 roofs being replaced or repaired.

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Quarry’s reputation confirmed: 125 years of production

Heavy 3 slate is quarried from the CUPA PIZARRAS No 3 quarry in San Pedro de Trones (León) in northern Spain. This quarry has been in operation since 1892 and produces around 25,000 tons each year!

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100 years warranty

Choosing a CUPA PIZARRAS product means opting for peace of mind. Actually, their resolute commitment to quality has led them to offer a 100 years warranty on Heavy 3 slates

THE VALUE OF HEAVY 3 LIES IN ITS PROPERTIES

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IMPERMEABLE
TO WATER

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WEATHER AND UV RESISTANT

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CHEMICAL RESISTANT,
NOT AFFECTED BY CHEMICALS OR POLLUTANTS (ACID OR ALKALI)

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NOT DAMAGED
BY FUNGI, MOSS, INSECTS,
ANIMALS OR BIRDS

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STRONG, WHILE WEIGHING
SUBSTANTIALLY LESS THAN
MAN-MADE ROOFING TILES

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NON-COMBUSTIBLE

CASES STUDIES

TESTIMONIALS

CONTACT

Don't hesitate to contact us; our team of natural slate experts is completely at your disposal.

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