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Description

Penrhyn Welsh Slate roofing is quarried from what is widely recognised as the finest quality and most durable slate deposit in the world. Penrhyn Quarry is located in Bethesda, Bangor on the edge of the Snowdonia National Park, North Wales. Penrhyn slate is generally heather blue in colour; with a limited availability of a red shade. The slate is naturally split along cleavage planes created by over 590 millions of years of intense pressure and heat to produce extremely strong roofing slates with a riven surface.

Benefits:

  • Conform to BS EN 12326-1: 2004 (A1, S1, T1).
  • Hold BS Kitemark accreditation and have a proven durability of in excess of 100 years.

General information
Size

600 x 300 mm

500 x 300 mm

Standard size.

400 x 300 mm

400 x 250 mm

300 x 200 mm

Uniclass 2015 Natural slates (Pr_25_93_72_56)
Specification data
Product Reference

Penrhyn Welsh Slate Roofing

Size

600 x 300 mm

500 x 300 mm

Standard size.

400 x 300 mm

400 x 250 mm

300 x 200 mm

Grade

Capital

5.5 mm thickness.

County

7.0 mm thickness.

Celtic

9.0 mm thickness.

Standard product features

Minimum roof pitch:

  • 600 x 300 mm: 25°.
  • 500 x 300 mm: 20°.
  • 500 x 250 mm: 30°.
  • 400 x 250 mm: 30°.
  • 300 x 200 mm: 30°.

Head-lap (minimum):

  • 600 x 300 mm: 55 mm.
  • 500 x 300 mm: 55 mm.
  • 500 x 250 mm: 50 mm.
  • 400 x 250 mm: 50 mm.
  • 300 x 200 mm: 50 mm.

Head-lap (maximum):

  • 600 x 300 mm: 150 mm.
  • 500 x 300 mm: 150 mm.
  • 500 x 250 mm: 100 mm.
  • 400 x 250 mm: 100 mm.
  • 300 x 200 mm: 100 mm.

Fixing:

Copper/ Aluminium clout nails.

Product Options

In addition to traditional rectangular patterns, Penrhyn slates can be shaped to agreed templates. Slates can also be supplied in large sizes up to 1000 mm in length in both fixed size and random diminishing courses.

Literature
Third party certifications
  • BS Kitemark: Certificate no. KM08014 : CE Marking
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