When bonding IKO enertherm PIR insulation boards to a flat roof, it is essential to consider the dimensions of the boards. The maximum recommended board size for bonded applications is 1200 × 1200 mm. This size offers an ideal balance between ease of installation and secure adhesion.
In practice, many roof decks exhibit slight irregularities or level differences in the substrate. The larger the board size, the greater the risk that these uneven areas will result in reduced contact surface between the adhesive and the insulation board. Oversized boards may not adhere properly across the entire surface, which can compromise the durability and performance of the insulation system.
Want to know more about bonding PIR insulation?
For technical guidance on bonding IKO enertherm insulation boards to flat roofs, including advice on suitable adhesives and application conditions, please contact your IKO advisor or refer to our installation guidelines.