text: SIP IT (Scotland) Limited are CATG/SIPmark certified. CATG is one of the UK’s leading timber and construction certification, examination and UK conformity bodies.
  This certification demonstrates that SIPit panels meet quality assurance and performance tests.
  It is a UKAS (United Kingdom Accreditation Service ) accredited certification.
  If you are building a house or an extension, you will require a building warrant. Building control will ask for evidence that the SIP system you are using is certified. CATG is recognised by Building control and warranty companies.