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Premium S1 Grade100-200+ Year Lifespan

CUPA Heavy 3 Spanish Slate

by CUPA PIZARRAS
9.3

Premium thick-cut Spanish slate from CUPA PIZARRAS, the world's largest natural slate producer. Heavy 3 offers exceptional durability with a distinguished dark gray color and is widely used in premium construction worldwide.

75-150+

Years Lifespan

$900-$1500

Per Square

950

Lbs/Square

Class A

Fire Rating

CUPA Heavy 3 Spanish Slate

Structural Reinforcement Required

Natural slate weighs 950 lbs per square - significantly heavier than other roofing materials. Most homes require structural engineering assessment and reinforcement before slate installation.

Key Features

Extra thick 7.5mm cut
T1 S1 graded excellence
Dark gray with blue undertones
Low water absorption (<0.3%)
Frost resistant certified
BBA certified quality

Available Colors

Dark GrayBlue-GrayCharcoal

Pros & Cons Analysis

Advantages

  • Excellent quality at lower cost than domestic
  • Widely available from major distributors
  • Consistent color and size
  • Extra thick for added durability
  • BBA and CE certified quality
  • Shorter lead times than other premium slates

Considerations

  • Not quite as prestigious as Welsh or Vermont
  • Some color variation between batches
  • Heavier than standard thickness
  • Imported (higher carbon footprint)
  • May fade slightly over decades

Best For

High-end new construction
Architectural projects
Commercial buildings
Quality-conscious homeowners
Projects with tighter budgets

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About CUPA PIZARRAS

CUPA PIZARRAS is the world's leading natural slate producer, operating 16 quarries in Spain. Their slate is used on buildings in over 60 countries.

9.3/ 10 Rating
View Quarry Profile

Price Estimate

Material Cost$900-$1500/sq
Typical Roof (20 sq)$18000-$30000

* Premium material pricing. Structural reinforcement, specialty underlayment, and master craftsman labor additional.

Ready for a Century-Long Roof?

CUPA Heavy 3 Spanish Slate can protect your home for 100-200+ years. Get quotes from certified slate specialists.