Resource Type: Certificate Home > Resources > Certificate Asterion II 3-Star Cylinder – Kitemark Certificate July 2022 Read Story Certificate HRV3 Passivhaus ECOaura – Certified Passive House Component March 2019 Read Story Asterion 3-Star Cylinder – Kitemark Certificate December 2018 Read Story Res-Lok – Test Certificate December 2018 Read Story BBA Certification – PIV August 2020 Read Story Titon FireSafe® Air Brick Certificate May 2022 Read Story