From Kingspan:
Since my mid-February announcement, there has been additional stress on a wide range of raw materials and the supply chains have become more fragile due to the events throughout the world. These events are impacting key raw materials such as resin and blowing agents that we did not expect two weeks ago.
Due to these ongoing changes, Kingspan Insulation will increase North American prices on the following products. The pricing adjustments will apply to all new and existing orders shipping on or after March 28th, 2022.
Kingspan GreenGuard® LG 12%
Kingspan GreenGuard® XPS 4%
Kingspan CertiFoam® XPS 4%
Kingspan CertiStud XPS 4%
Download official letter HERE