Westmorland Green Slate

Westmorland Green Natural slate….. a hundred times older than mankind and a material that has been quarried for over 400 years to create stunning and weathertight roof coverings. A1,T1 & S1 Certified



Westmorland Green Slate is one of the most prestigious natural slates in the UK, having reliably protected vital buildings, such as Buckingham Palace, for centuries. We supply these weather-resistant slate tiles with A1, T1 and S1 certifications and are thoroughly tested to meet BSEN12326-1:2004 standards.

What is Green Slate?

Westmorland Green Slate is a natural slate, a hundred times older than humankind and a material that has been quarried for over 400 years to create stunning and weathertight roof coverings.

Westmorland Green Slate provides an exquisite finish to any home, new or refurbished. It is quintessentially British and speaks permanence, consideration and quality—the perfect medium for creating fascinating, striking roofscapes of distinction. The distinctive green colour is created from the metamorphosed volcanic ash of the Borrowdale Volcanic group of mountains in the heart of the Lake District. These deposits contain chlorides which impart a beautiful green colour.

Green Slate Tile Craftsmanship

We source and craft Westmorland Green Slate tiles in three different formats. The three roofing slates formats are:

Patterns. These are cut to a fixed length and width, the width never less than half the length. Large, patterned slates can be used where a roof has a shallower pitch.

Sized Slates. These are of a stated length but random widths: the widths will never be less than half the length and not greater than a square. Sized slates are ideal for roofs where a lot of cutting is required, i.e. at verges, hips and valleys, as the widest of the slates can be selected for these areas.

Randoms. These are supplied in random lengths and widths: the width never being less than half the length. Randoms are ordered by reference to the maximum and minimum required lengths, for example, 460mm to 225mm (18” to 10”): they must be sorted on-site by length and are laid to courses which diminish from eaves to ridge.

Most size options are available in different thicknesses or selection grades – Bests, Strongs and Extra Strongs.

Famous Buildings With Green Slate

Westmorland Green Slate has been used in many notable buildings throughout the history of the UK. Here are some examples of famous buildings that use this green-tinted slate:

Buckingham Palace: The roof of the East Wing of Buckingham Palace is covered in Westmorland Green Slate, installed in the mid-19th century.

St. Paul’s Cathedral: It was used to replace the damaged roof of St. Paul’s Cathedral in the 1950s.

Royal Albert Hall: The roof of the Royal Albert Hall in London is covered in Westmorland Green Slate, installed during a major restoration project in the early 2000s.

Liverpool Cathedral: The roof of Liverpool Cathedral is covered in this wonderful slate, installed in the mid-20th century.

The Houses of Parliament: It was used to repair the roof of the Houses of Parliament in London after a major fire in the 19th century.

These are just a few examples of the many UK buildings that use Westmorland Green Slate, renowned for its durability, sustainability, and unique appearance. By choosing UK Slate, your building could join this prestigious crowd.

Speak with one of our specialists today

UK Slate

At UK Slate we all have pride in what we do, having a drive to succeed in being the best that we can be. If you choose UK Slate to be your supplier of choice – you will be assured of the very best support for the whole of your project.
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