In 2014, two BS 8414 tests (one featured Trespa HPL cladding and one terracotta tiles) were undertaken using an R&D version of K15 and subsequently featured in Kingspan’s communication about, and marketing of, K15. This should not have happened and would not happen with the robust processes we have today. However, replacement tests were subsequently conducted with standard K15 and the same (pass/fail) test outcomes were achieved.
By way of background, Kingspan Insulation had planned to migrate K15 to this R&D specification as part of its launch of a lower thermal conductivity range of Kooltherm products; although ultimately, this did not occur.
Kingspan Insulation wrote to fire engineers on 23 October 2020 confirming the withdrawal of the 2014 tests (along with the withdrawal of the 2005 test referenced in another FAQ), and providing the results of a 2019 replica test (using standard K15) for the 2014 test that featured Trespa HPL cladding.
It also confirmed that two other tests of systems comprising Terracotta tiles and standard K15 had been conducted previously. In 2021 the 2014 test with Terracotta cladding was also replicated but using standard K15.
Withdrawal was a prudent step undertaken by Kingspan as a responsible manufacturer.
For further information or assistance, please contact Kingspan Insulation Technical Advisory Team.