Specifying Polyisocyanurate (ISO) is an important design consideration for ensuring long term roof performance. But there can be confusion within the product standard ASTM C1289, which references the type, class and grade of ISO. Below is a comprehensive chart to help in choosing the right ISO insulation.
As always, if you have any questions or you would like to discuss a project where RoofSense may help determine your specification approach, please contact your local Luna & Associates sales representative to discuss in further detail.
