All product performance claims made in the current versions of marketing literature for K15, and those made on our website, have been fully verified. They can be found here.
A total of 15 BS 8414 tests using cladding systems incorporating current K15 have successfully met the relevant criteria set by BR 135. They can be found at: https://www.kingspan.com/gb/en-gb/fire-safety/kingspan-bs-8414-tested-systems
However, Kingspan has carried out a detailed review of all past and current test data which relates to K15, including BS 8414 tests. In February 2019 we concluded that three BS 8414 tests carried out in 2005 and 2014 featured product which was not sufficiently representative of the product as currently sold. These reports were removed from the Kingspan website and our product literature in March 2019.
In two of these cases, Kingspan has either undertaken, or we already had, further successful BS8414 testing of similar systems, using K15 as currently sold. In the third case further testing has shown that the historical performance claim is valid for current K15.
Our extensive testing and re-testing gives us confidence that systems incorporating current K15 can continue to be used safely, if used in compliance with the relevant Building Regulations.
The withdrawal of these three BS 8414 tests led to the suspension of K15’s BBA and LABC certification. On November 24, the BBA issued a new Product Sheet for K15 thereby re-establishing its BBA certification. The Product Sheet can be viewed here
In addition, at the time of the Grenfell Tower tragedy, K15’s Euroclass rating was C-s1,d0. However, our most recent testing has shown that the product is now C-s2,d0. This rating is reflected in our current product and marketing information. This change in classification does not invalidate the 15 successful BS8414 tests mentioned above.