PIR insulation for pitched roofs
PIR insulation for pitched roofs can form a continuous layer above the rafters, helping to limit heat loss through the roof structure. Its slim profile is useful when build-up depth, internal headroom or the appearance of exposed rafters matters. The board is one part of a roof system: roof covering, underlay, fixings, vapour control and ventilation all need to work together. Suitable installation details depend on the building and the selected product. ecoPIR can help you discuss your roof application and request current board information. Confirm the complete roof design and required thermal performance before ordering.
A continuous layer above the rafters
Above-rafter insulation can reduce repeated thermal bridges through timber. At eaves, ridges, roof windows and adjoining walls, continuity of insulation and airtightness needs particular attention.
Plan the complete roof system
- Confirm the target U-value and available insulation depth.
- Check the board facing, edge detail and compatibility with the roof underlay.
- Select fixings for the roof build-up, substrate and design loads.
- Coordinate vapour control, drainage and ventilation with the roof design.
For an enquiry, include the roof area, pitch, covering, rafter arrangement and preferred board thickness. Explore PIR boards or contact ecoPIR.
Let’s talk about your project.
Planning a new build or improving an existing space? Tell us the application, area and insulation thickness you have in mind. Ask for current product information and availability.