Featured
Kooltherm K107 Pitched Roof Board
Premium performance pitched roof insulation board
Which Pitched Roof Insulation is Best for my Project?
We offer a range of solutions for your pitched roof or loft, including between and over rafter insulation boards and insulated plasterboard for under rafters. Our products can also be used between and inside studs for any dwarf walls in your loft, as well as between and over floor joists to fully insulate your attic space.
There are a number of key considerations that should be made when choosing your pitched roof insulation, from thermal performance through to how easy it is to handle and install.
On this page you will find:
- Our pitched roof and loft insulation options - Kooltherm K107 Pitched Roof Board, Kooltherm K118 Insulated Plasterboard & Thermapitch TP10
- A comparison of the different solutions we offer so you can select the right product for your project.
- Useful links to help with your project, including how to find a stockist and installation advice.
If you are a homeowner don't forget to take a look at our Homeowner Hub where you can find a wealth of advice and support for your project!
We have a number of different solutions for pitched roofs, depending on the design and performance requirements. Scroll down for full comparison table.
Useful Links
Discover More
Pitched roof insulation support
Compare our Pitched Roof Insulation Solutions
Product | Application | Advantages |
|---|---|---|
Phenolic insulation for use between or over rafters | Rigid insulation with a thermal conductivity of just 0.019 W/mK One of the thinnest commonly used insulants for pitched roofs, allowing U-values to be reached with minimal thickness Unaffected by air infiltration and resistant to the passage of water vapour Easy to handle and install compared to some other commonly used insulants | |
PIR insulation for tiled or use between or over rafters | Thermal conductivity of 0.022 W/mK Unaffected by air infiltration and resistant to the passage of water vapour Easy to handle and install compared to some other commonly used insulants | |
Phenolic insulated plasterboard for use under rafters | Rigid insulation with a thermal conductivity of just 0.019 W/mK One of the thinnest commonly used insulated plasterboards, allowing U-values to be reached with minimal thickness Insulation, drylining and vapour control in one board Unaffected by air infiltration and resistant to the passage of water vapour Easy to handle and install compared to some other commonly used insulants | |
Breathable membrane | Waterproof - can be used as a temporary roof covering Non-tenting Airtight at normal building pressures Durable - heat and UV stable Lightweight |