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A range of good quality natural roofing slate, ideal for the refurbishment and volume housing developer market. Commercial slates are recommended for experienced slaters, as thickness and quality can be more variable than the Excellence range, so careful sorting and grading is recommended.

All slates are S1, T1, W1 (≤ 0,6%) to comply with NHBC Standards. Wastage, while still very reasonable, is generally a little higher than the Excellence range.

All our SIGA Commercial natural slates come with a 30 Year Warranty, terms and conditions apply.

Each SIGA natural slate product has a SIGA number – SIGA 120, SIGA 39 and so on. The SIGA number specifically defines the quarry and selection of slate, guaranteeing traceability and consistency that is second to none.

Gallegas 37

A very popular slate for use across the UK, with a pleasing blue grey textured finish similar to Gallegas 39.

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Gallegas 65

A first mixed selection textured blue grey slate from a very popular quarry, suitable for all project types except in Scotland.

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