SIGA 56x is a hard, heavy, Classic slate – a good low-cost choice for new build or refurbishment work. The slate has some safe cubic mineral inclusions, but receives a T1 rating, complying with NHBC requirements for new build housing, however, will require more sorting and grading than Commercial SIGA slates.

Region Used:

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

Product Types:



Ponferrada, Leon, Spain


Blue Black




5mm, 6mm, 6.6mm

Sizes Available:

500 x 250mm, 600 x 300mm, 500 x 375mm, 600 x 350mm, 600 x 450mm, 400 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