SIG Design & Technology is committed to ensuring that the roofing solutions we recommend conform to all relevant standards as required by current legislation.

SIG Design & Technology is an active member and supporter of many key construction and roofing industry organisations including:

SPRA Logo - Accreditation

NFRC Logo - Accreditation
Accreditation - LRWA


NBS Plus Logo - Accreditation
RIBA Logo - Accreditation
NHBC Logo - Accreditation
Accreditation - FM Approved

British Standards

  • BS EN ISO 14001
  • BSI OH SAS 18008
  • BS EN 12056-3 : 2000
  • Building Regulations Approved Document L
  • BS 6399: Parts 1, 2 and 3 and BSEN 1991
  • FLL
  • BS 6229: 2003, Flat roofs with continuously supported coverings. Code of practice


The Green Guide to Specification provides guidance for specifiers, designers and their clients on the relative environmental impacts of elemental specifications for roofs, walls, floors etc.

Environmental ratings are based on Life Cycle Assessment using the Environmental Profiles methodology (Ecopoints). This assesses all processes from manufacture, transport to site, installation, maintenance and disposal at the end of the product’s life. Whole roof specification ratings are expressed as A+, A, C, D or E.
Single-ply PVC has been rated as A+.

Single-ply PIB has not yet been rated.

If you have any questions about our accreditations, BREEAM or other standards please get in touch.

SPRA Membership Certificate

SPRA membership certificate