SIGA 56M offers excellent workability and outstanding durability at the lowest possible cost for projects from the Midlands to the South. As an W1 (≤ 0,6%), T1, S1 slate, it can provide an economical choice for refurbishment projects and extensions, and it meets NHBC requirements for new build. The varied selection will require careful sorting and grading in order to show the rustic nature of the slate at its best.

Region Used:

London, North West, East Midlands, West Midlands, East Anglia, South West, South East

Product Types:



La Bana Region, Spain


Blue Black





Sizes Available:

500 x 250mm*Other sizes may be available to special order. Please contact us for details.


30 Years

Product Specifications


Samples have been tested in accordance with, and comply with, the relevant sections of EN12326-1:2014.

  • Thermal Cycling T1
  • Exposure S02 S1
  • Water Absorption W1 (≤ 0,6%)
  • Meets the requirements of NHBC Standards

Additional Information

SIGA warranties are backed by SIG Roofing, the UK’s largest distributor of roofing materials. The performance of the slate is warranted for the stated period, subject to installation in accordance with prevailing British Standards and good roofing practice.

Registered Office: SIG Trading Limited, Adsetts House, 16 Europa View, Sheffield Business Park, Sheffield, S9 1XH. Registered in England No. 01451007 VAT No. GB 487 01733