Commercial

SIGA Commercial is a trusted range of natural roofing slates, offering a wide choice of sizes, colours and textures suitable for a variety of roofing projects. Providing an excellent balance of quality, durability and value, the range is ideal for refurbishment projects, housing developments and larger-scale residential roofing applications.

Available in a selection of natural finishes, SIGA Commercial slates deliver a traditional slate roof appearance while offering reliable long-term performance. As a more commercially focused range, thickness and appearance may vary more than SIGA Excellence and Prestige slates, making them particularly suited to experienced slaters who can achieve the desired finish through careful sorting and grading.

All SIGA Commercial slates achieve T1, S1 and W1 (≤0.6%) classifications in accordance with NHBC Standards, demonstrating excellent weather resistance and low water absorption. Every slate is backed by a 75-year warranty (terms and conditions apply) and assigned a unique SIGA reference number, ensuring full quarry traceability and product consistency. Browse our range of SIGA Commercial natural roofing slates to find a cost-effective solution for both new build and refurbishment roofing projects.