NATURAL SLATE PRODUCTS

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.

Excellence

The finest natural roofing slates from the most reputable quarries, selected to provide a long lasting, beautiful roof with minimal grading and sorting. This range also provides readily available alternatives to long discontinued slates from Wales and Scotland, providing a close match for texture and colour without the slightest compromise on quality.

SIGA Excellence natural slates are ideal for heritage conversion and refurbishment projects and high quality new build and self build projects, with some slates being National Parks approved.

All slates are S1, T1, W1 (≤ 0,6%) to comply with NHBC Standards.

All Excellence slates come with warranties of up to 75 Year Warranty, terms and conditions apply.

SIGA 112s

A dark blue grey smooth slate from Spain which has National Parks Approval.

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SIGA 120

A unique, random diminishing alternative to traditional Scottish Slate.

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SIGA 150

An alternative to native green slate which can no longer be sourced. Commonly used on churches.

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SIGA 140

An alternative to indigenous purples slate, sourced from the USA.

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SIGA 39

A very popular slate for use on all projects across the UK, with a pleasing blue grey textured finish.

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SIGA 32s

A textured blue grey slate with National Parks Approval. A good alternative to the popular SIGA 32.

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SIGA 39s

A popular slate for use on all projects across the UK, with a pleasing blue grey textured finish, slightly more textured than SIGA 39.

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SIGA 67atg

An attractive blue black slate suitable for use in Scotland on high profile projects. Complies with the Belgian ATG standard.

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SIGA 67nf

An attractive blue black slate suitable for use in Scotland on high profile projects. Also complies with the exacting French NF standard.

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SIGA 32

A textured blue grey slate with National Parks Approval. 7mm thickness commonly used in the North of England, 5mm in the South.

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SIGA 31

A very strong, hard slate with a loyal following in the Northeast of England. Also available in Scottish thicknesses and sizes.

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SIGA 50x

A clean, flat and regular slate with an attractive dark appearance, commonly used in the South of England.

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Commercial

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 for the best aesthetics.

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 Commercial Natural Slates come with a 30 Year Warranty, terms and conditions apply.

SIGA 37

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

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SIGA 62m

A first selection slate from the La Bana Region with a fine vertical line. Smooth, blue grey and slender - suitable for projects in the South and East

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SIGA 13s

A dark blue grey smooth slate from Spain similar to SIGA 112s, with a fine vertical grain. Often used on self build projects.

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SIGA 35

A heavy textured 8mm blue grey slate very popular with housebuilders in Scotland.

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SIGA 65v

A consistent, economical and smooth natural slate. Ideal for new build housing projects covered by NHBC warranties in the South, West and East of Engl

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SIGA 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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SIGA 54x

A clean, flat and regular slate with an attractive dark appearance, commonly used in the South of England. Very cost effective.

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Classic

Affordable natural roofing slates of good overall quality make the SIGA Classic range ideal for budget conscious projects. Although they require more sorting and grading to produce a good roof finish, all SIGA Classic roof slates must meet the same strict testing and certification criteria as the higher grades.

SIGA Classic range of natural slates are ideal for conversion and refurbishment projects across the UK, and are NHBC compliant making them particularly suitable for new build housing. Wastage is a little higher than the Commercial range.

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

SIGA 56m

A smooth, blue grey and slender slate from the La Bana Region. Suitable for conversion and refurbishment projects in the South and East of England.

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SIGA 56x

A clean, flat and regular slate with an attractive dark appearance, commonly used in the South and East of England.

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SIGA 56s

A dark grey, textured 8mm budget option slate suitable for conversion and refurbishment projects in Scotland.

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SIGA 56v

A smooth, economical, natural slate. Ideal for new build projects covered by NHBC warranties in the West of England and Southern Home Counties.

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HERITAGE REPRODUCTION STONE

Heritage Reproduction Stone

Individual hand crafted alternatives to Cotswold natural stone and Collyweston and Swithland natural slates, reflecting the rustic beauty of the originals.

SIGA Heritage Reproduction Stone – Cotsway

A genuine alternative to natural Cotswold stone roofing slates, matching the versatility and beauty of real stone.

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SIGA Heritage Reproduction Stone – Charnwood

A genuine alternative to natural Swithland slate roofing of the East Midlands, 20% lighter but equal in colour, texture and performance.

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SIGA Heritage Reproduction Stone – Rutland

A genuine alternative to natural Collyweston stone roofing slates from the East Midlands, matching colour, texture and performance.

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Heritage Reproduction Reclaimed Slate

A reproduction roof slate providing all the look and feel of weathered natural reclaimed slate but with a 25-year guarantee and no shortage of supply.

Fibre Cement

SIGA Man-Made Smooth Square Edge fibre cement roofing slates have a smooth surface with square edges. An ideal option if looking for a cost-effective alternative to natural slates.