Insulation for Pitched Roofs
Recticel offers PIR insulation solutions for pitched roofs in new builds and renovation projects. Boards can be placed directly on the structure or between rafters to support consistent thermal performance.
Why is it important to insulate your pitched roof?
Insulating pitched roofs plays an important role in supporting thermal comfort and reducing energy loss through the building envelope. Recticel’s rigid polyisocyanurate foam insulation boards are suitable for use in both standard and converted loft spaces.
Moisture and Condensation Control in Pitched Roofs
Controlling moisture and condensation is critical for pitched roof performance. When warm, humid air from inside the building meets the colder roof structure, condensation can form within rafters or insulation layers, leading to mold growth, timber decay, and reduced thermal efficiency. Proper ventilation, vapor control layers, and high-performance insulation are essential to prevent these issues and maintain a healthy, energy-efficient roof environment. Recticel insulation products are designed to enhance thermal performance while helping manage moisture in pitched roof applications. Our PIR boards have low water absorption, which helps maintain insulation performance under typical conditions. When used in combination with a correctly installed vapor control layer, Recticel insulation can contribute to reducing the risk of condensation within the roof structure and supports the protection of timber elements.
How are PIR boards installed in roof projects?
These boards can be installed between and/or below rafters and are compatible with various construction methods, making them appropriate for both new build and renovation projects.
Benefits of using PIR foam panels for loft insulation
Recticel insulation’s Eurothane GP are a practical solution for loft insulation, offering a strong balance between thickness and thermal performance. Their thermal conductivity of 0.022 W/mK supports effective insulation even in limited spaces - ideal for loft conversions under sloping roofs where space is at a premium. The boards’ rigid structure helps to maintain long-term stability, reducing the risk of sagging and contributing to consistent thermal performance over time
